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Journal of Pharmacognosy and Phytochemistry
Vol. 8, Special Issue 2 (2019)
Genetic variability studies in f3 and f4 segregating generations for yield and its components in rice (Oryza sativa L.)
Author(s): M Venkatesan, R Eswaran, P Karthikeyan and KR Saravanan
Abstract: Rice is the most important cereal crop and it is the main source of energy and income for the majority of the world’s human population. In this study four crosses of F1 generation were advanced to F3 and F4 segregating generations for variability, heritability and genetic advance of rice genotypes. Among four cross combinations AD95137XADT36 and AD95157XADT36 showed good performance for most of the traits studied. These two cross combinations recorded high heritability coupled with high genetic advance as percent of mean and moderate heritability with moderate genetic advance as percent of mean indicating the presence of additive gene action in both F3 and F4 populations and hence these cross combinations can be selected for further improvement. The other two crosses combinations AD 95157 X ADT 43 and AD 95157 X IR 50 recorded mostly low heritability and low genetic advance as percent of mean in both the populations indicating the predominance of non-additive gene action.
How to cite this article:
M Venkatesan, R Eswaran, P Karthikeyan and KR Saravanan. Genetic variability studies in f3 and f4 segregating generations for yield and its components in rice (Oryza sativa L.). 2019; 8(2S): 10-14.