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Endogenous Bio-Chemical Changes Vis-a-Vis Node Positions on one Year Old Shoot in Teak (Tectona grandis L.F.)
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Endogenous contents of moisture, soluble sugars phenols and o-phenols as well as peroxidase activity at ischolar_maining zone of successive N1-10 nodes from top to bottom collected from one year growth of a 5-6 year old teak (Tectona grandis L.f.) bud grafts maintained in vegetative multiplication garden were estimated. No set trend in endogenous bio-chemical parameters suggests that they play active physiological role in differentiation/ growth of shoot appendages and also adventitious ischolar_mains in excised shoots. Their minimum endogenous levels at N1 and N2 may be due to their involvement in extension growth of twigs and leaf expansion related metabolic process, making their limited availability for de novo adventitious ischolar_mains. Thus, the above preliminary biochemical investigations carried out at various nodes of the same shoot may, to some extent, help explain their differential ischolar_maining response besides encouraging in depth exploration to find out biochemical basis of progressive loss of juvenility and ischolar_maining potential with the aging of perennial trees.
Keywords
Adventitious Roots, Endogenous Bio-Chemicals, Moisture Content, Nodes, Vegetative Multiplication Garden.
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