e-ISSN 2231-8542
ISSN 1511-3701

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Nature of Genetic Control of the Length and Number of Elongated Internodes in Deepwater Rice under Non-flooded Condition

J.L. Dewivedi and D. Senadhira

Pertanika Journal of Tropical Agricultural Science, Volume 16, Issue 1, April 1993

Keywords: Oryza sativa L., deepwater rice, plant elongation

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Inheritance of total length and number of elongated internodes in some vanities of deepwater rice were studied in a 7 X 7 diallel (excluding reciprocals) by a procedure that does not require flooding. Estimates of combining ability and genetic component analysis showed highly significant additive and non-additive gene effects with preponderance of additive type. The high estimate of narrow sense heritability further supported the importance of additive gene effects. Jalmagna and IR40905-11-3-1-5-2-21 were not always the best combiners. The significance of the gene distribution indicated the presence of gene asymmetry. The average degree of dominance was 8.83 for both total length and number of elongated internodes indicating partial dominance.

ISSN 1511-3701

e-ISSN 2231-8542

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