PLANT WATER RELATIONS AND PHENOLOGICAL SHIFTS IN RESPONSE TO DROUGHT IN CASTANOPSIS INDICA AT PHULCHOWKI HILL, KATHMANDU, NEPAL
Journal Title: Journal of Biological and Scientific Opinion - Year 2014, Vol 2, Issue 1
Abstract
In the central Himalaya, plants are subjected to a prolonged dry period, thus developing moisture stress. Phenomorphological variations such as leaf expansion and flowering are affected by the interaction between water availability, stem water storage, wood moisture percentage, wood density and wood water. Sensitivity to water stress and phenological processes such as leaf emergence, senescence, flowering, fruiting and their relationship with wood water properties, starch percentage content, specific leaf mass (SLM), nitrogen content in leaves was studied in one Himalayan evergreen tree species, Castanopsis indica. Wood moisture, reserved starch percentage and SLM had a strong effect on phenological activities. They increased during the vegetative bud break and leaf emergence and decreased during senescence. Similarly leaf nitrogen in the studied species was at the crest of concentration during leaf initiation then declined, one in expanded leaves as the concentration became diluted by increasing cell wall material, and the other at the time of senescence by resorption.
Authors and Affiliations
Poudyal K.
Keywords
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- EP ID EP147002
- DOI 10.7897/2321–6328.02116
- Views 80
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