Shivashankar, S.Rajgopal, K.Ramadasan, A.2014-06-022014-06-022007-02-08Annals of botany 1985 v-55 p-755-758http://hdl.handle.net/123456789/2136The 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.enCocos nucifera L. (Coconut)Chowghat Dwarf OrangeWest Coast Tallheterosischlorophyllnitrate reductaseleaf areashoot dry weightArticle