e-ISSN 2231-8542
ISSN 1511-3701

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Effect of Water Depth, Seedling Age, and Day Length on Elongation Induced by Short-duration Flooding Treatment in Rice

J.L. Dwivedi, D. Senadhira, P.P. Singh, G.N. Jha and O.P. Verma

Pertanika Journal of Tropical Agricultural Science, Volume 19, Issue 1, April 1996

Keywords: deepwater rice, photoperiod sensitivity, elongation

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Experiments conducted on seedling age and different water depths revealed that short-duration, 7-day flooding o f 3- week-old seedling was effective in assessing elongation potential in deepwater rice varieties. Water depths o f 90-100 cm were sufficient to express elongating ability and 3-week-old seedlings gave better contrast between elongating modern varieties and non-elongating modern varieties. Maximum internode length was under short-day-length conditions while shortest internodes were obtained in the long day treatment. Internode elongation may be due only to the signal effect o f day length or the shading effect on assimilation. Further experiments should be conducted to confirm these findings.

ISSN 1511-3701

e-ISSN 2231-8542

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