References

These are the references cited in the various growing guides.

Albihn, P. B. E., and G. P. Savage. “The bioavailability of oxalate from oca (Oxalis tuberosa).” The Journal of urology 166.2 (2001): 420-422.

Almekinders, C. J. M., Neuteboom, J. H., & Struik, P. C. (1995). Relation between berry weight, number of seeds per berry and 100-seed weight in potato inflorescences. Scientia horticulturae, 61(3), 177-184.

Andrews, T. (2014, Dec 11). Project: Crambe Maritima Cultivar List. Retrieved from: https://www.facebook.com/notes/project-crambe-maritima/cultivar-list/900612986615973

Angayon, J. D., Castañeto, Y. T., & Castañeto, E. T. (2008). Rooting of Yacon (Smallanthus sonchifolius) using main stem in different rooting media. NVSU research journal, 1-2.

Ayala Garay, O. J., Briard, M., Péron, J. Y., & Planchot, V. (2001, November). Chaerophyllum bulbosum: A new vegetable interesting for its root carbohydrate reserves. In International Symposium on Sustainable Use of Plant Biodiversity to Promote New Opportunities for Horticultural Production 598 (pp. 227-234).

Barcellona, C. S., Cabrera, W. M., Honoré, S. M., Mercado, M. I., Sánchez, S. S., & Genta, S. B. (2012). Safety assessment of aqueous extract from leaf Smallanthus sonchifolius and its main active lactone, enhydrin. Journal of ethnopharmacology, 144(2), 362-370.

Barstow, S. (2014). Around the World in 80 Plants. Permanent Publications.

Baskin, J. M., & Baskin, C. C. (1993). The ecological life cycle of Perideridia americana (Apiaceae). American Midland Naturalist, 75-86.

Bate-Smith, E. C., Swain, T., & Nördstrom, C. G. (1955). Chemistry and inheritance of flower colour in the Dahlia. Nature, 176, 1016-1018.

Blakeney, M. (2002). Intellectual property aspects of traditional agricultural knowledge. Economic and Social Issues in Agricultural Biotechnology, Wallingford: CABI, 43-60.

Blanco, G. O. (1982). Genetic variability of tarwi (Lupinus mutabilis Sweet). Agricultural and Nutritional Aspects of Lupines. GTZ, Eschborn, Germany, 33-49.

Briard, M., Horvais, A., & Péron, J. Y. (2002). Wild seakale (Crambe maritima L.) diversity as investigated by morphological and RAPD markers. Scientia Horticulturae, 95(1), 1-12.

Bristol, M. L. (1988). Edible arracachas of the Sibundoy. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 16, 107-110.

Bond, J. M., Daniels, R., & Bioret, F. (2005). Genetic diversity in Crambe maritima along the English Channel: the role of ocean currents in determining population structure. Ecography, 28(3), 374-384.

Bonnave, M., Bleeckx, G., Beltrán, J. R., Maughan, P., Flamand, M. C., Terrazas, F., & Bertin, P. (2014). Farmers’ unconscious incorporation of sexually-produced genotypes into the germplasm of a vegetatively-propagated crop (Oxalis tuberosa Mol.). Genetic resources and crop evolution, 61(4), 721-740.

Bowes, B. G. (1976). In vitro morphogenesis ofCrambe maritima L. Protoplasma, 89(1-2), 185-188.

Bulacio, E., & Ayarde, H. (2012). Aspectos ecológicos y distribución de Tropaeolum tuberosum ssp. silvestre (Tropaeolaceae) en Argentina. Boletín de la Sociedad Argentina de Botánica, 47(1-2), 97-101.

Cárdenas‐Valencia, I., Nieto, J., Gasco, M., Gonzales, C., Rubio, J., Portella, J., & Gonzales, G. F. (2008). Tropaeolum tuberosum (Mashua) reduces testicular function: effect of different treatment times. Andrologia, 40(6), 352-357.

Carlsson, A. S. (2006). Production of wax esters in crambe. CPL.

Chuang, T. I., & Constance, L. (1969). A systematic study of Perideridia (Umbelliferae-Apioideae). Univ. Calif. Publ. Bot, 55, 1-74.

Chuang, T. (1970). A Systematic Anatomical Study of the Genus Perideridia (Umbelliferae- Apioideae). American Journal of Botany, 57(5), 495-503.

Davila, Y. C., & Wardle, G. M. (2002). Reproductive ecology of the Australian herb Trachymene incisa subsp. incisa (Apiaceae). Australian Journal of Botany, 50(5), 619-626.
 
Davila, Y. C. (2006). Pollination ecology of Trachymene incisa (Apiaceae): Understanding generalised plant-pollinator systems.

de Vos, A. C., Broekman, R., Groot, M. P., & Rozema, J. (2010). Ecophysiological response of Crambe maritima to airborne and soil-borne salinity. Annals of Botany, 105(6), 925-937.

De Oliveira, R. B., De Paula, D. A. C., Rocha, B. A., Franco, J. J., Gobbo-Neto, L., Uyemura, S. A., … & Da Costa, F. B. (2011). Renal toxicity caused by oral use of medicinal plants: the yacon example. Journal of ethnopharmacology, 133(2), 434-441.

Deppe, C. (2000). Breed Your Own Vegetable Varieties: The Gardener’s and Farmer’s Guide to Plant Breeding and Seed Saving. Chelsea Green Publishing.

Downie, S. R., Sun, F. J., Katz-Downie, D. S., & Colletti, G. J. (2004). A phylogenetic study of Perideridia (Apiaceae) based on nuclear ribosomal DNA ITS sequences. Systematic botany, 29(3), 737-751.

Emshwiller, E. (2002). Biogeography of theOxalis tuberosa alliance. The Botanical Review, 68(1), 128-152.

Espín, S. (2001). Composición química, valor nutricional y usos potenciales de siete especies de raíces y tubérculos andinos.

Facciola, S. (1998). Cornucopia II: A source book of edible plants. Vista, CA. Kampong publications.

Fairholm, R. (2013). The Lost Art of Potato Breeding. Skylight Press.

[FAO] Food and Agriculture Organization of the United Nations. (2007). Quality Declared Planting Material.

Fenille, R. C., Ciampi, M. B., Souza, N. L., Nakatani, A. K., & Kuramae, E. E. (2005). Binucleate Rhizoctonia sp. AG G causing root rot in yacon (Smallanthus sonchifolius) in Brazil. Plant pathology, 54(3), 325-330.

Fernández, E. C., Rajchl, A., Lachman, J., Čížková, H., Kvasnička, F., Kotíková, Z., … & Voldřich, M. (2013). Impact of yacon landraces cultivated in the Czech Republic and their ploidy on the short-and long-chain fructooligosaccharides content in tuberous roots. LWT-Food Science and Technology, 54(1), 80-86.

Flores, T., Alape-Girón, A., Flores-Dı́az, M., & Flores, H. E. (2002). Ocatin. A novel tuber storage protein from the andean tuber crop oca with antibacterial and antifungal activities. Plant Physiology, 128(4), 1291-1302.

Franco, J., Main, G., & Oros, R. (1999). Investigation-Research: Trap Crops as a Component for the Integrated Management of Globodera spp.(Potato Cyst Nematodes) in Bolivia. Nematropica, 29(1), 51-60.

Fritsch, R. M., & Friesen, N. (2002). 1 Evolution, Domestication and Taxonomy. Allium Crop Science: Resent Advances. CABI Publishing, Wallingford, UK, 5-30.

Fujino, M., Nakanishi, T., Ishihara, J., Ono, S., Sugiura, M., & Tomioka, K. (2008). New yacon cultivars,’Andes no Yuki’and’Salad Okame’. (2007). Bulletin of the National Agricultural Research Center for Western Region (Japan).

Gade, D. W. (1966). Achira, the edible canna, its cultivation and use in the Peruvian Andes. Economic Botany, 20(4), 407-415.

Gallagher, D. T. P., & Nabi, M. N. (1984). Extraction and germination of true potato seed. New Zealand journal of experimental agriculture, 12(2), 151-154.

Genta, S., Cabrera, W., Habib, N., Pons, J., Carillo, I. M., Grau, A., & Sánchez, S. (2009). Yacon syrup: beneficial effects on obesity and insulin resistance in humans. Clinical Nutrition, 28(2), 182-187.

Geyer, M., Manrique, I., Degen, L., & Beglinger, C. (2008). Effect of yacon (Smallanthus sonchifolius) on colonic transit time in healthy volunteers. Digestion, 78(1), 30-33.

Gibbs PE, Marshall D, Brunton D (1978) Studies on the cytology of Oxalis tuberosum and Tropaeolum tuberosum. Notes R Bot, Gard Edinb 37:215–220.

Graefe, S., Hermann, M., Manrique, I., Golombek, S., & Buerkert, A. (2004). Effects of post-harvest treatments on the carbohydrate composition of yacon roots in the Peruvian Andes. Field Crops Research, 86(2), 157-165.

Grasmick, M. E., & Slack, S. A. (1986). Effect of potato spindle tuber viroid on sexual reproduction and viroid transmission in true potato seed. Canadian journal of botany, 64(2), 336-340.

Grau, A. (2003). Mashua, Tropaeolum Tubrosum Ruíz & Pav (Vol. 25). International Potato Center.

Gross, R., Von Baer, E., Koch, F., Marquard, R., Trugo, L., & Wink, M. (1988). Chemical composition of a new variety of the Andean lupin (Lupinus mutabilis cv. Inti) with low-alkaloid content. Journal of food composition and analysis, 1(4), 353-361.

Grun, P. (1990). The evolution of cultivated potatoes. Economic Botany, 44(3), 39-55.

Harshberger, J. W. (1897). The Native Dahlias of Mexico. Science, 908-910.

Harvey, J. H. (1984). Vegetables in the middle ages. Garden History, 89-99.

Heinonen, M. (2014) Landrace potato onions in Finland

Hermann, M., Freire, I., & Pazos, C. (1997). Compositional diversity of the yacon storage root. Impact on a changing world: Program report, 98, 425-432.

Hermann, M., & Heller, J. (Eds.). (1997). Andean roots and tubers: ahipa, arracacha, maca and yacon (Vol. 21). International Potato Center.

Hermann, M., & Erazo, C. (1999). Compositional changes of oca tubers following postharvest exposure to sunlight. CIP Program Report, 2000, 391-396.

Hermann, M. (2013). 8 Successes and pitfalls of linking nutritionally promising Andean crops to markets. Diversifying Food and Diets, 164.

Hickmott, S. (2003). Growing Unusual Vegetables: Weird and Wonderful Vegetables and How to Grow Them. Eco-logic Books.

Hind, N. (2010). Tropaeolaceae: 688, 689. TROPAEOLUM TUBEROSUM. Curtis’s Botanical Magazine, 27(3), 301-313.

Hunter, D. E., Darling, H. M., & Beale, W. L. (1969). Seed transmission of potato spindle tuber virus. American Potato Journal, 46(7), 247-250.

Hus, H. 1906. Fasciation in Oxalis Crenata and Experimental Production of Fasciations. Missouri Botanical Garden Annual Report, Vol. 1906 (1906), pp. 147-152

Koike, S. T., & Azad, H. R. (2003). First Report of Bacterial Blight of Four O’Clock (Mirabilis jalapa), Caused by Xanthomonas campestris in California. Plant Disease, 87(7), 874-874.

Jacobsen, S. E., & Mujica, A. (2008). Geographical distribution of the Andean lupin (Lupinus mutabilis Sweet). Plant Genetic Resources Newsletter (Rome, Italy), 155, 1-8.

Joel, B. (2013 Sep 4) Arracacha, The Perennial Root of the Andes. Retrieved from: http://permaculturenews.org/2013/09/04/arracacha-the-perennial-root-of-the-andes/

Johns, Timothy. 1981. The añu and the maca. Journal of Ethnobiology 1:208-212.

Jones, R. A. C. (1982). Tests for transmission of four potato viruses through potato true seed. Annals of Applied Biology, 100(2), 315-320.

Kale, P. R. (2006). Studies on nutritional and processing properties of storage roots of different yam bean (Pachyrhizus spp.) and wild mung bean (Vigna vexillata) species. Cuvillier.

Kays, S.J., T.P. Gaines, and W.R. Kays.1979. Changes in the composition of the tuber crop Oxalis tuberosa Molina during storage. Scientia Horticulturae 11:45–50.

Kays, S. J., & Nottingham, S. F. (2007). Biology and chemistry of Jerusalem artichoke: Helianthus tuberosus L. CRC press.

Keirsbilck, F. (2008) Mauka. Retrieved from: http://home.scarlet.be/~fk392454/mauka.html

Koerth-Baker, M. (2013, Mar 25) The Case of the Poison Potato. Retrieved from: http://boingboing.net/2013/03/25/the-case-of-the-poison-potato.html

Laferriere, J., Weber, C., Kohlhepp, E. 1991. USE AND NUTRITIONAL COMPOSITION OF SOME TRADITIONAL MOUNTAIN PIMA PLANT FOODS. I· Ethnobiol. 11(1):93-114

Lam, S. L. (1968). Interaction of temperature and gibberellin on potato seed germination. American Journal of Botany, 193-198.

Lassaigne JL. Nouvelle Analyse Chimique des Tubercules de l ́Oxalis Crenata. J Chim Med. 1850; 6: [3], 198-200.

Lawson, H. M. (1983). True potato seeds as arable weeds. Potato Research, 26(3), 237-246.

Le Clerc, V., Suel, A., Geoffriau, E., Huet, S., & Briard, M. (2014). [Temporal evolution of the genetic diversity of Chaerophyllum bulbosum: consequences on the genetic resources management]. Comptes rendus biologies, 337(5), 352-359.

Leidi, E. O., Fernández, M., Sarmiento, R., Semedo, J., Marques, N., Matos, A., … & Matos, M. C. (2004). Factors affecting root and seed yield in ahipa (Pachyrhizus ahipa (Wedd.) Parodi), a multipurpose legume crop. European journal of agronomy, 20(4), 395-403.

Leino, M. W., & Hagenblad, J. (2014). Potato onion. Trädgård och politik, 17.

LempiÄinen, T. (1989). Germination of the seeds of ulluco (Ullucus tuberosus, Basellaceae). Economic Botany, 43(4), 456-463.

Leon, Jorge. 1964. The “maca” (Lepidium meyenii), a little-known food of Peru. Economic Botany. 18: 122-127.

León-Marroú, M. E., & Villacorta-González, M. Y. SE Pagador F.(2011) Composición química de “oca”(Oxalis tuberosa),“arracacha”(Arracaccia xanthorriza) y “tarwi”(Lupinus mutabilis): Formulación de una mezcla base para productos alimenticios. Revista Venezolana de Ciencia y Tecnología de Alimentos, 2, 239-252.

Leonel, M., Ferrari, T. B., Sarmento, S. B. S., & Oliveira, M. A. D. (2005). Planting time, developmental stages and characteristics of roots and starch of Pachyrhizus ahipa. Scientia Agricola, 62(6), 528-533.

Lizárraga, C., Santa Cruz, M., López, G., & Fuentes, S. (2001). Effect of viruses UMV, UVC, PapMV-U, and PLRV on Ulluco production and their control. Scientist and farmer: partners in research for the 21st Century. Program Report 1999-2000, 381-389.

Lizárraga, C., Querci, M., Santa Cruz, M., Bartolini, I., & Salazar, L. F. (2000). Other natural hosts of potato virus T. Plant disease, 84(7), 736-738.

Loebenstein, G., Berger, P., Brunt, A. 2001. Virus and Virus-like Diseases of Potatoes and Production of Seed-Potatoes. Springer.

Łuczaj, Ł. J., Svanberg, I., & Köhler, P. (2011). Marsh woundwort, Stachys palustris L.(Lamiaceae): an overlooked food plant. Genetic resources and crop evolution, 58(5), 783-793.

Manrique, I., Gonzales, R., Valladolid, A., Blas, R., Lizárraga, L. PRODUCCIÓN DE SEMILLAS EN YACÓN (Smallanthus sonchifolius (Poepp. & Endl.)) MEDIANTE TÉCNICAS DE POLINIZACIÓN CONTROLADAS. Ecología Aplicada, 13(2), 2014.

Martin, R. J., Savage, G. P., Deo, B., Halloy, S. R. P., & Fletcher, P. J. (2004, February). Development of new Oca lines in New Zealand. In I International Symposium on Root and Tuber Crops: Food Down Under 670 (pp. 87-92).

McElroy, S., Fred H. Yelverton, Joseph C. Neal, and Thomas W. Rufty Jr. (2004) Influence of photoperiod and temperature on vegetative growth and development of Florida betony (Stachys floridana). Weed Science: March 2004, Vol. 52, No. 2, pp. 267-270.

Mensinga, T. T., Sips, A. J., Rompelberg, C. J., van Twillert, K., Meulenbelt, J., van den Top, H. J., & van Egmond, H. P. (2005). Potato glycoalkaloids and adverse effects in humans: an ascending dose study. Regulatory Toxicology and Pharmacology, 41(1), 66-72.

Mesure, S. (2014, Mar 22) Like seaweed? Like kale? You’ll love sea kale! Retrieved from: http://www.independent.co.uk/life-style/food-and-drink/news/like-seaweed-like-kale-youll-love-sea-kale-9210281.html

Millard, R. (2014, Aug 8) Trio caught picking sea kale illegally from Shoreham beach and selling it to top London restaurants. Retrieved from: http://www.theargus.co.uk/news/11397454.Sea_kale_being_picked_illegally_from_Sussex_beaches_and_sold_on_to_top_London_restaurants/

Monger, W. A., Harju, V., Skelton, A., Seal, S. E., & Mumford, R. A. (2007). Canna yellow streak virus: a new potyvirus associated with severe streaking symptoms in canna. Archives of virology, 152(8), 1527-1530.

[NRC] National Research Council Staff. (1989). Lost crops of the incas: Little-known plants of the andes with promise for worldwide cultivation. National Academies Press.

Nelson, J. (1918) An Addition to Our Food Plants. The American Botanist, Vol. 24 pp. 97-99.

Nsabimana, C., Jiang, B. (2011),”The chemical composition of some garden Dahlia tubers”, British Food Journal, Vol. 113 Iss 9 pp. 1081 – 1093

Ohyama, T., Ito, O., Yasuyoshi, S., Ikarashi, T., Minamisawa, K., Kubota, M., … & Asami, T. (1990). Composition of storage carbohydrate in tubers of yacon (Polymnia sonchifolia). Soil science and plant nutrition, 36(1), 167-171.

Pallais, N., Fong, N., & Berrios, D. (1985). Research on the physiology of potato sexual seed production. Innovative Methods for Propagating Potatoes: CIP Report, 149-168.

Pathirana, R., Sansom, C., Smallfield, B., Perry, N., Frew, T., Timmerman-Vaughan, G., Heyes, J. 2011. In vitro mutagenesis to adapt ulluco (Ullucus tuberoses) to New Zealand conditions. The New Zealand Institute for Plant & Food Research Limited

Parra-Quijano, M., Panda, S., Rodrı́guez, N., Torres, E. Diversity of Ullucus tuberosus (Basellaceae) in the Colombian Andes and notes on ulluco domestication based on morphological and molecular data. Genet Resour Crop Evol (2012) 59:49–66

Pearson, I. (2014, Mar 18) Oca as a Late-Planted Crop… Seems to Work. Retreived from: http://oca-testbed.blogspot.com/2014/03/oca-as-late-planted-crop-seems-to-work.html

Péron, J.-Y. 1990. Tuberous-rooted chervil: A new root vegetable for temperate climates. p. 422-423. In: J. Janick and J.E. Simon (eds.), Advances in new crops. Timber Press, Portland, OR.

Peterson, A. (2010, Dec 6) Growing Oca (Oxalis tuberosa). Retrieved from: http://chehalisvalley-altcrops.blogspot.com/2010/12/growing-oca-oxalis-tuberosa.html

Phillips, B. J., Hughes, J. A., Phillips, J. C., Walters, D. G., Anderson, D., & Tahourdin, C. S. M. (1996). A study of the toxic hazard that might be associated with the consumption of green potato tops. Food and chemical toxicology, 34(5), 439-448.

Pietilä, L., & Jokela, P. (1994). Developmental abnormalities in the ovule and embryo sac of ulluco (Ullucus tuberosus) and their effect on seed set. Euphytica, 75(1-2), 31-39.

Pietilä, L. (1995). Pollination requirements for seed set in ulluco (Ullucus tuberosus). Euphytica, 84(2), 127-131.

Pissard, A., Rojas-Beltran, J. A., Faux, A. M., Paulet, S., & Bertin, P. (2008). Evidence of intra-varietal genetic variability in the vegetatively propagated crop oca (Oxalis tuberosa Mol.) in the Andean traditional farming system. Plant Systematics and Evolution, 270(1-2), 59-74.

Polreich, S. Establishment of a Classification Scheme to structure the Post-Harvest Diversity of Yacon Storage Roots (Smallanthus sonchifolius (Poepp. & Endl.) H. Robinson). Thesis. 2003

Ponce, D., Marquez, L., Peña, A. Colección, caracterización morfológica y molecular en poblaciones silvestres y cultivadas nativas de maca (Lepidium ssp.). Proceedings of Primer congreso peruano de mejoramiento genético y biotecnología agrícola. 2010

Quiros, C.F., Epperson, A. Hu, Jinguo and Miguel Holle .1996. Physiological studies and determination of chromosome number in maca, Lepidium meyenii (Brassicaceae). Econ. Bot. 50:216-223.

Rajakaruna, P., Shafiekhani, M., Kim, T., Payton, M., Chauhan, R., & Verchot, J. (2014). Production of discernible disease phenotypes in Canna by five plant viruses belonging to the genera Potyvirus, Cucumovirus and Badnavirus. Plant Pathology, 63(4), 821-830.

Rea, J. U. L. I. O., & León, J. O. R. G. E. (1967). La mauka (Mirabilis expansa) un aporte de la agricultura prehispánica de Bolivia. Universidad Nacional Agraria La Molina., Lima, Perú. Anales Científicos, 38-41.

Reuther, K., & Claßen-Bockhoff, R. (2013). Andromonoecy and developmental plasticity in Chaerophyllum bulbosum (Apiaceae–Apioideae). Annals of botany, 112(8), 1495-1503.

Ribeiro, R. A., Finger, F. L., Puiatti, M., & Casali, V. W. D. (2005). Chilling injury sensitivity in arracacha (Arracacia xanthorrhiza) roots. Tropical Science, 45(2), 55-57.

Roberts, K. A. (2003). Conservation biology of Perideridia erythrorhiza (Apiaceae): experimental reintroduction and life history (Doctoral dissertation).

Robinson, R. A. (1996). Return to resistance. Breeding crops to reduce pesticide dependence. AgAccess, Davis, California in association with IDRC, Ottawa.

Rolston, M. P. (1978). Water impermeable seed dormancy. The botanical review, 44(3), 365-396.

Romeiro, R. S., Sousa, R. M., Muchovej, J. J., & Kimura, O. (1988). Soft rot of Peruvian carrot due to Erwinia carotovora in Brazil. Plant pathology, 37(2), 300-302.

Rosen, C. J., & Tongn, C. B. (2001). Yield, dry matter partitioning, and storage quality of hardneck garlic as affected by soil amendments and scape removal. HortScience, 36(7), 1235-1239.

Rousi, A., Yli-Rekola, M., Jokela, P., Kalliola, R., Pietilä, L., & Salo, J. (1988). The fruit of Ullucus (Basellaceae), an old enigma. Taxon, 71-75.

Rowan. (2015, Jun 16). Mulching yacon and oca. Retrieved from: https://www.cultivariable.com/forum/main/mulching-yacon-and-oca/

Rudloff, E., & Wang, Y. (2011). Crambe. In Wild Crop Relatives: Genomic and Breeding Resources (pp. 97-116). Springer Berlin Heidelberg.

Ruprich, J., Rehurkova, I., Boon, P. E., Svensson, K., Moussavian, S., Van der Voet, H., … & Busk, L. (2009). Probabilistic modelling of exposure doses and implications for health risk characterization: Glycoalkaloids from potatoes. Food and Chemical Toxicology, 47(12), 2899-2905.

Ryu, J. H., Doo, H. S., Lee, K. S., & Park, S. Y. (2001). Effect of plant density on growth responses and yield in yacon. Korean Journal of Crop Science, 46(5), 407-410.

Sanyal, A., & Decocq, G. (2015). Biological Flora of the British Isles: Crambe maritima. Journal of Ecology, 103(3), 769-788.

Scott, G. A. M., & Randall, R. E. (1976). Crambe maritima L. The Journal of Ecology, 1077-1091.

Shapiro, T. A., J. W. Fahey, K. L. Wade, K. K. Stephenson, and P. Talalay. 1998. Human metabolism and excretion of cancer chemoprotective glucosinolates and isothiocyanates of cruciferous vegetables. Cancer Epidemiol. Biomarkers Prev. 7: 1091–1100.

Simmonds, N. W. (1963). Experiments on the germination of potato seeds. II. European Potato Journal, 6(2), 69-76.

Simmonds, N. W. (1964). The genetics of seed and tuber dormancy in the cultivated potatoes. Heredity, 19(48), 504.

Singh, R. P. (1970). Seed transmission of potato spindle tuber virus in tomato and potato. American Journal of Potato Research, 47(6), 225-227.

Sivori, E., Nakayama, F., & Cigliano, E. (1968). Germination of Achira seed (Canna sp.) approximately 550 years old.

Smith, E. (2010, Sep 12) Green with sea kale envy. Retrieved from: http://groweat.blogspot.com/2010/09/green-with-sea-kale-envy.html

Smith, O. (2009, Jan 22) Crap Crops of the Incas: My on-off-on affair with high altitude Andean root crops 1) Oca. Retrieved from: http://radix4roots.blogspot.com/2009/01/crap-crops-of-incas-my-on-off-on-affair.html

Smith, O. (2009, Feb 4) Rock on Yacon! Retrieved from: http://radix4roots.blogspot.com/2009/01/rock-on-yacon.html

Smith, O. (2010, Mar 25) Mushua – A Tasty Transformation of Tropaeolum Tubers? Retrieved from: http://radix4roots.blogspot.com/2010/03/mushua-tasty-transformation-of.html

Smith, O. (2010, Sep 27) Yacon: I am Spartacus! Retrieved from: http://radix4roots.blogspot.com/2010/09/yacon-i-am-spartacus.html

Smith, O. (2010, Oct 4) Mauka: Man Bites Dog. Retrieved from: http://radix4roots.blogspot.com/2010/10/mauka-man-bites-dog.html

Solomon, S. (2000). Growing Vegetables West of the Cascades: The Complete Guide to Natural Gardening. Sasquatch Books.

Sørensen, M. (1996). Yam Bean: Pachyrhizus DC.-Promoting the conservation and use of underutilized and neglected crops. 2 (Vol. 2). Bioversity International.

Spalik, K., & Downie, S. R. (2006). The evolutionary history of Sium sensu lato (Apiaceae): dispersal, vicariance, and domestication as inferred from ITS rDNA phylogeny. American Journal of Botany, 93(5), 747-761.

Steyn, M. (2004). TASTEMAKER WITH A SWEET TOOTH. Atlantic Monthly, 294(4).

Sturtevant, E. L. (1890). The history of garden vegetables (continued). American Naturalist, 719-744.

Sugiura, M., Nakanishi, T., Kameno, T., & Fujino, M. (2007). A new yacon [Smallanthus sonchifolius] cultivar,’Sarada otome’. Bulletin of the National Agricultural Research Center for Western Region (Japan).

Sugiura, M., & Yano, T. Researches on Morphological Characteristics of A Yocon (Smallanthus sonchifolius (Poepp. & Endl.) H. Robinson) Cultivar ‘Andesu no otome’and Similarities with Those of Other Cultivars and Lines during each Growth. (2016) 近畿中国四国農業研究センター研究資料第 12 号, 38.

Sullivan, M. J., Inserra, R. N., Franco, J., Moreno-Leheude, I., & Greco, N. (2007). Potato cyst nematodes: plant host status and their regulatory impact. Nematropica, 37(2), 193-201.

Sumanaratne, J. P., Palipane, W. M. U., & Kumary, L. S. (2002). Feasibility of Small Onion (Alliun cepa L. Aggregatum Group) Cultivation from True Seeds. Annals of the Sri Lanka.

Svobodová, E., Viehmannová, I., Russo, D., Dvoráková, Z., Hlásná, P., Havlícková, L., Zela, G. Genetic diversity of yacon (Smallanthus sonchifolius (Poepp. & Endl.) H. Robinson) and its wild relatives as revealed by ISSR markers. Biochemical Systematics and Ecology 50 (2013) 383–389

Tapia, C., & Estrella, J. (2001, November). Genetic erosion quantification in ullucus (Ullucus tuberosus Caldas), oca (Oxalis tuberosa Mol.) and mashua (Tropaeolum tuberosum R. &P.) in agrosystems of the provinces of Cañar, Chimborazo and Tungurahua, Ecuador. In Proc. Int. Symp. Managing Biodiversity in Agricultural Ecosystems, Montreal, Canada (pp. 8-10).

Taylorson, R. B., & Khan, A. A. (1982). Interaction of phytochrome and other factors in seed germination. The physiology and biochemistry of seed development, dormancy and germination, 323-346.

Torres, F. (2003). Effect of yacon leaf as organic amendment on the growth and yield of yacon and Allelopathic potential of yacon leaf on selected crops and weeds.  Japanese Society of Soil Science and Plant Nutrition. 49: 262.

Torres, O., Perea-Dallos, M., & Fandiño, T. J. (1992). Micropropagation of Cubio (Tropaeolum tuberosum R & P). In High-Tech and Micropropagation III (pp. 160-171). Springer Berlin Heidelberg.

Trognitz, B. R., Carrión, S., & Hermann, M. (2000). Expression of stylar incompatibility in the Andean clonal tuber crop oca (Oxalis tuberosa Mol., Oxalidaceae). Sexual Plant Reproduction, 13(2), 105-111.

Trognitz, B. R., & Hermann, M. (2001). Inheritance of tristyly in Oxalis tuberosa (Oxalidaceae). Heredity, 86(5), 564-573.

TSEGAW, T., & ZELLEKE, A. (2002). Removal of reproductive growth increases yield and quality of potato (Solanum tuberosum L.). Tropical agriculture, 79(2), 125-128.

Tsukihashi, T., Kawamura, Hara, H., & Taguchi, Y. (1996). Influence of Planting Depth of the Seed Tubers on the Growth and Yield in the Cultivation of Yacon (Polymnia sonchifolia). Japanese Journal of Farm Work Research, 31(4), 257-264.

Ugent, D., Pozorski, S., & Pozorski, T. (1984). New evidence for ancient cultivation of Canna edulis in Peru. Economic Botany, 38(4), 417-432.

Viehmannová, I., Trávníčková, M., Špatenková, E., Černá, M., & Trávníček, P. (2012). Induced polyploidization and its influence on yield, morphological, and qualitative characteristics of microtubers in Ullucus tuberosus. Plant Cell, Tissue and Organ Culture (PCTOC), 109(1), 83-90.

Vitali, M. S., & Barreto, J. V. (2014). Phylogenetic studies in Smallanthus (Millerieae, Asteraceae): a contribution from morphology. Phytotaxa, 159(2), 77-94.

VITALI, M., SANCHO, G., KATINAS, L. 2015. A revision of Smallanthus (Asteraceae, Millerieae), the “yacón” genus. Phytotaxa 214 (1): 001–084.

Wagner, T. (2011, Feb 19) Sowing TPS-True Potato Seed. Retrieved from: http://tatermater.proboards.com/thread/345/sowing-tps-true-potato-seed

Wardle, G. M. (2003). Experimental determination of seed emergence and carry‐over in the soil seed bank of the herbaceous perennial, Trachymene incisa (Apiaceae). Austral Ecology, 28(2), 161-172.

WHITLEY, G. THE MEDICINAL AND NUTRITIONAL PROPERTIES OF DAHLIA SPP. Journal of Ethnopharmacology, 14 (1985) 75-82.

Wilcock, C. C. (1974). Population Variation, Differentiation and Reproductive Biology of Stachys Palustris LS sylvatica L. and S. x Ambigua SM. New Phytologist, 1233-1241.

Williams, J. (2016, Jan 1). The Newest Peruvian Super Food Is Rainbow Colored Mashua. Retrieved from: http://renegadehealth.com/blog/2016/01/01/the-newest-peruvian-super-food-is-rainbow-colored-mashua

Wisniak, J. (2014). Jean Louis Lassaigne. Revista CENIC Ciencias Biológicas, 45(2), 119-130.

Winterton, K. (2011). Resurrecting the Potato Onion. Retrieved from: https://docs.google.com/document/d/1jnqst7-9YfWFovhqjARtcZZVJC0TPzKsow_5mdAwnyA/edit

Woodell, S. R. J. (1985). Salinity and seed germination patterns in coastal plants. Vegetatio, 61(1-3), 223-229.

Yun, E. Y., Kim, H. S., Kim, Y. E., Kang, M. K., Ma, J. E., Lee, G. D., … & Jeong, Y. Y. (2010). A case of anaphylaxis after the ingestion of yacon. Allergy, asthma & immunology research, 2(2), 149-152.

Zardini, E. (1991). Ethnobotanical notes on “Yacon,” polymnia sonchifolia (Asteraceae). Economic Botany, 45(1), 72-85.