Browsing by Author "Rajgopal, K."

Now showing 1 - 5 of 5
  • Thumbnail Image
    Item
    Chlorophylls and Nitrate reductase activity in relation to Heterosis in coconut seedlings
    (2007-02-08) Shivashankar, S.; Rajgopal, K.; Ramadasan, A.
    The F1 progeny of Chowghat Dwarf Orange (CDO) and West Coast Tall (WCT) cross tend to be highly heterozygous with respect to the colour of petiole and seedling vigour. The study indicated that the greenish brown coloured vigorous plants had higher chlorophyll (a+b) content and nitrate reductase (NR) activity compared to the orange coloured vigorous plants and the dwarfs. The greenish brown seedlings were also characterized by a larger leaf area and shoot d. wt. The results provide biochemical evidence in support of the morphological criteria being used at present in the selection of hybrid coconut seedlings.
  • Thumbnail Image
    Item
    Diurnal Rhythm in Nitrate Reductase Activity of Cocos nucifera L. Leaves
    (1983) Shivashankar, S.; Rajgopal, K.
    Nitrate reductase (NR) activity in the leaves of Cocos nucifera L. exhibited a strong diurnal rhythm with a peak at 2 p.m. This rhythm was maintained under permanent dark or light conditions indicating the endogenous control of the rhythm. The NR activity was independent of tissue nitrate level. The study suggested a possible regulatory role of sugars on leaf NR activity.
  • Thumbnail Image
    Item
  • Thumbnail Image
    Item
    The Malayan Dwarf Coconut
    (1983-04) Satyabalan, K.; Rajgopal, K.
    Studies on the yield performance and fruit analysis of green, yellow and red forms of Malayan Dwarf and of green and orange forms of Chowghat Dwarf indicate that Chowghat Dwarf is different from Malayan Dwarf. Nut and copra characters of Malayan Dwarf yellow and red forms studied and those reported from other countries show considerable variation between them. Nut and copra characters of individual palms of Malayan Dwarf yellow studied also show variation between palms. On the basis of fruit analysis the palms of Malayan Dwarf yellow have been classified into four groups. The variation between palms is likely to result in the variable performance of Dwarf x Tall hybrids produced from them.
  • Thumbnail Image
    Item
    The Malayan Dwarf Coconut
    (2007-02) Satyabalan, K.; Rajgopal, K.
    Studies on the yield performance and fruit analysis of green, yellow and red forms of Malayan Dwarf and of green and orange forms of Ch-owghat Dwarf indicate that* Chowghat Dwarf is different from Malayan Dwarf. Nut and copra characters of Malayan Dwarf yellow and red forms studied and those reported from other countries show considerable variation between them. Nut and copra characters of individual palms of Malayan Dwarf yellow studied also show variation between palms. On the basis of fruit analysis the palms of Malayan Dwarf yellow have been classified into four groups. The variation between palms is likely to result in the variable performance of Dwarf x Tall hybrids produced from them.