2. Institutional Publications

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Author: search.filters.author.Vijayakumar, N K

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    Influence of split application of P and K on direct seeded semi-dry viruppu rice
    (Kerala Agricultural University, 1987) Ramankutty, N N; Vijayakumar, N K
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    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.
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    In vitro shoot regeneration from axillary bud cultures of malabar white pine (Vateria indica L.) through tissue culture
    (Kerala Agricultural University, 1997) Ashok B Devatar; Vijayakumar, N K
    Axillary buds collected from seedlings of Veteria Mica L., the recalcitrant Malabar white pine, were cultured under in vitro conditions with the objective of standardising the micropropagation technique for this species. A few media combinations consisting of full and half strength mineral salts of Murashige and Skoog (MS) as well as woody plant medium (WPM) have been identified to be capable of supporting culture establishment and bad break. Among these, the media containing half strength mineral salts of MS supplemented with organic nutrients and growth regulators alone supported elongation and continued growth of shoots. Shoots were 1-2 cm in height with 2-3 leaves in eight weeks under controlled conditions with 16 h photoperiod at a temperature of 27+2" C. The success obtained is the first of this kind in this species.