2. Institutional Publications

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Summer groundnut as a component of rice based cropping system
(Kerala Agricultural University, 1994) Ramakrishnan, M; Gopinathan Nair, V
Reali/ing the difficulty in determining the time of optimum maturity in groundnut, a maturity index was formulated. Recombination breeding with high productive and extra early types was undertaken. Combining ability was estimated by the line \ tester method. Among lines, Chico was the best combiner for earliness. Among testers, TMV 2 was the best for productivity. High yielding extra early recombinants were selected from the ?2 populations for further testing and selection.
Combining ability in pigeonpea (Cajanus cajan [L.] millsp)
(Kerala Agricultural University, 1996) Achamma Oommen; Namboodiri, K M N; Vijayakumar, N K
Even though both additive and nonadditive gene effects were found to be important in the expression of the characters studied, the additive gene effects were having more influence than nonadditive gene effects. Number of primary branches was determined by additive and nonadditive genes, whereas number of secondary branches was influenced by additive genes. All the other nine characters were determined by additive genes. Among the five parents studied, PLA 550 was the best general combiner and among the crosses UPAS 120 x 1C 15708 was having good sea for all the characters.