2. Institutional Publications

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Genetic analysis of some quantitative characters in pigeonpea
(Kerala Agricultural University, 1994) Achamma Oommen; Namboodiri, K M N; Unnithan, V K G
Out of the eleven quantitative characters studied in pigeonpea, days to flowering alone was influenced by non-additive genes and all the remaining characters by additive genes. The proportion of dominant and recessive genes was equal for plant height and number of clusters per plant, whereas more than one recessive gene was present for eveiy dominant gene in the expression of days to maturity. The remaining eight characters showed the presence of one to two dominant genes for every recessive gene.
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.