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New data on the changes in morphology and weight of the cush-cush yam (Dioscorea trifida) under field conditions






Yams International seminar, Pointe a Pitre, 28 July 2 August 1980 [France, INRA]: 233-254

New data on the changes in morphology and weight of the cush-cush yam (Dioscorea trifida) under field conditions

In field trials in Guadeloupe in 1976-7 and 1979-80, growth and development of D. trifida INRA 25 were studied by weekly sampling of the crop. 5 main phases were described: tuber bulking; flowering; formation of the tuberiferous axis cluster; translocation of DM to the tuber and tuber maturation. Origin of the mother-tuber affected early growth and development but not final yield.


Accession: 001101939



Related references

Degras, L.S.nner, C.V.utor, A.P.itout, R.S.ard, C., 1980: New data on the morphological and weight evolution of the Cush-crush yam Dioscorea trifida in field cultivation. Colloques de l'INRA: ) 233-254

Fevre, F.; Coleno, A.; Ricci, P., 1977: Storage of cush-cush yam (Dioscorea trifida), first curing trials (heat treatment). Fresh cush-cush tubers were wounded with a scalpel and half were inoculated with Penicillium oxalicum, the rest left as a control. They were then either stored immediately or first cured by heat treatment at 25-30 deg C on perforated trays or loos...

Degras, L.A.nolin, R.P.itout, R., 1980: The main effects of the Cush-cush yam Dioscorea trifida and the researches for their genetical correction. Colloques de l'INRA: ) 281-287

Wickham, L.D., 1988: Extension of dormancy in cush-cush yams (Dioscorea trifida) by treatment with gibberellic acid. Treatment of tubers of 2 local D. trifida cultivars immediately after harvest by submergence for 22 h in water containing 150 p.p.m. GA3 extended the dormancy period (100% sprouting) to 20 weeks and decreased tuber wt loss to 17% compared with 13...

Ricci, P.; Coleno, A.; Fevre, F., 1978: Storage problems in the cush cush yam dioscorea trifida 2. control of penicillium oxalicum rots. P. oxalicum, the main agent of post-harvest rots in stored tubers of the cush-cush yam, was sensitive in vitro to thiabendazole and benomy. Both chemicals applied to the tubers as a dip for 10 min no later than the 3rd day after harvest and exhibi...

Degras, L.; Vautor, A.; Poitout, R.; Arnolin, R.; Suard, C., 1977: Growth and development of the cush-cush yam (Dioscorea trifida L.). In field trials in Guadeloupe, D. trifida cv. INRA 5-20 was sown in late May and development was studied every 8 days for the first 10 wk and last 20 wk of growth and every 2 wk in the intermediate stages of growth. Development of the leaf system,...

Degras, L.; Arnolin, R.; Suard, C.; Poitout, R., 1972: New information on the selection of Dioscorea trifida (cush-cush yam). Clones were obtained from seedlings of two initial clones. Tuber shape, length of peduncle and cycle of development showed relative stability in successive years but saleable yield was suitable as a selection criterion only after three tuber multi...

Degras, L.M., 1974: Selection of cush-cush yam (Dioscorea trifida L.). Release of D. trifida clone INRA 25, which gave tuber yields of up to 37 t/ha and outyielded other hybrids by 10-30% and local cultivars by up to 50%, is reported.

Degras, L.M., 1969: Some information on the variability of the progeny in cush-cush yam (D. trifida L.). Seeds from 2 female clones of cush-cush yams exhibited 40-50% germimination after 55 days. After multiplication there were marked variations between clones in flowering, in the length of the underground axis remaining untuberized and in tuber shap...

Riici P.; Torregrossa J.P.; Arnolin R., 1979: Storage problems in the cush cush yam part 1 post harvest decay. In an investigation on the post-harvest behavior of cush-cush yams (Dioscorea trifida L.) grown at various locations in the French West Indies, the incidence of decaying tubers was 10% on the average and occasionally ranging up to 37%. Nearly 8 ou...