Genetic evaluation of yield and yield attributing traits in rice (Oryza sativa L.) using line x tester analysis
Abstract
In order to study the combining behaviour of quantative traits of rice, line x tester (10x3) progenies were generated involving 10diverse parents viz., Basmati 370, Basmati 564, Saanwal basmati, Pusa basmati 1121, Pusa basmati 1, Pusasugandh, RR-600, Basmati 386, Type 3 and CSR-30 and three well adapted varieties Pusa basmati 1509, Ranbir basmati and Pusa 1460. The preponderance of both additive and dominant gene action was observed for most of the traits. Basmati 370, Basmati 564, Pusa Basmati 1121, Pusa basmati 1, Pusa basmati 1509 and Pusa 1460 were found to be good general combiners which can be utilized to generate desirable segregates for further selection. High sca effects were observed for grain yield and its component in cross combinations Basmati 370/Pusa basmati 1509, Basmati 564/Pusa 1460, Saanwal basmati/ Pusa basmati 1509, Saanwal basmati/Pusa 1460, Pusa basmati 1/Ranbir basmati, RR600/ Pusa 1460, Basmati 386/ Pusa 1460, Type 3/Ranbir basmati and CSR 30/Ranbir basmati which can be used for the exploitation of heterosis for yield.
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