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Several aspects of growth, development and sapogenin yield of tubers of Dioscorea spiculiflora


, : Several aspects of growth, development and sapogenin yield of tubers of Dioscorea spiculiflora. Econ Bot 18(4): 323-328

Tubers of D. spiculiflora and some characteristics of their growth are described. Direct correlation between original weight of tuber piece and subsequent tuber growth, and numbers of nodes and leaves produced was recorded. Plants grown in peat rarely exhibited nutritional deficiency but responded to regular applications of fertilizer by great increases in shoot and tuber growth. Sapogenin analyses of tubers revealed (a) considerably higher content of sapogenins in original tuber pieces dug in Mexico than in subsequent 1 - and 2-year-old tuber tissue developed from these pieces when grown in peat in the greenhouse at Glenn Dale, Maryland; (b) higher sapogenin content in the outer 1-1 1/2 mm layer of tubers than in the inside tissue; (c) no significant difference in sapogenin content of tissue from ventral and dorsal sides of tubers; and (d) no difference in sapogenin content of tubers from pistillate and staminate plants.

US$19.90

DOI: 10.1007/bf02862718


Other references

Nakashima, T.; Kimizuka, N., 2011: Water/ionic liquid interfaces as fluid scaffolds for the two-dimensional self-assembly of charged nanospheres. Liquid-liquid interfaces formed between water and ionic liquids serve as fluid scaffolds to self-assemble anionic nanospheres two-dimensionally. When aqueous dispersions of anionic fluorescent polystyrene nanospheres (diameter ∼500 nm) are layer...

Ahn, S.; Yang, J.; Lim, H.; Shin, H.Suk., 2017: Selective synthesis of pure cobalt disulfide on reduced graphene oxide sheets and its high electrocatalytic activity for hydrogen evolution reaction. We synthesized single-phase CoS<sub>2</sub> on a large scale by adding graphene oxide of sufficient quantity via the hydrothermal method using cobalt acetate and thioacetamide as precursors; this produced the hybrid of CoS<sub>2&...

Sanson-Fisher, R.; Bowman, J.; Armstrong, S., 1992: Factors affecting nonadherence with antibiotics. Nonadherence with antibiotic therapy has profound implications both for patient health and the health care system that bears the financial costs incurred. Significant levels of nonadherence with antibiotic prescriptions have been demonstrated. Of...

Häusler, H.J.; Schneider, P.; Lindenau, K.F.; Kinzel, P.; Meister, E.M.; Dähnert, I., 1990: Quantitative Doppler echocardiography diagnosis of congenital aortic and pulmonary artery stenoses. The aim of the present study was to check the value of cw-Doppler echocardiography for the assessment of severity of congenital aortic and pulmonary stenoses in children and adolescents. Over a period of 3 years 217 children and adolescents with a...

Kramer, S.; Lee, K.F., 1974: Complications of radiation therapy: the central nervous system. Seminars in Roentgenology 9(1): 75-83

Noll, W., 1950: Eine Masseninfektion von Gammariu pulex fossarum Koch mit Polymorphus minutus Goeze. Over 60% of the Gammarus pulex fossarum collected from a brook near Aschaffenburg contained Polymorphic minutus larvae. The faeces of the ducks contained numerous eggs of P. minutus.

Mattei, T.A., 2014: Nonhomeomorphic topological transformations and the challenge of collision detection in virtual reality simulation in neurosurgery. World Neurosurgery 81(2): 209-213

Southgate, T.D.; Windeatt, S.; Smith-Arica, J.; Gerdes, C.A.; Perone, M.J.; Morris, I.; Davis, J.R.; Klatzmann, D.; Löwenstein, P.R.; Castro, M.G., 2000: Transcriptional targeting to anterior pituitary lactotrophic cells using recombinant adenovirus vectors in vitro and in vivo in normal and estrogen/sulpiride-induced hyperplastic anterior pituitaries. The use of pituitary cell type-specific promoters is a powerful molecular tool to achieve pituitary cell type-specific transcriptional targeting of transgenes encoded by viral vectors. It has recently been proposed that transcriptional targeting o...

Srivastava, S.S.; Sathyanesan, A.G., 1971: Structure of the thyroid of some teleosts having accessory respiratory organs. Zeitschrift für Mikroskopisch-Anatomische Forschung 83(2): 237-245

Franke, F., 1934: Experimentelle und histologische Untersuchungen am Nackenschild der Cladoceren. Jenaische Zeitschrift fuer Naturwissenschaft, 69: 285-320