PHENOLOGICAL PATTERNS OF Erythrina variegata and Erythrina subumbrans IN TWO DISTINCT PRECIPITATION REGIME IN TROPICAL FORESTS OF MIZORAM, INDIA
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 35
Abstract
Vegetative and reproductive phenological behaviour of Erythrina variegata and E. subumbrans were studied in two distinct precipitation regimes of tropical forest (Neihbawi and Sairang) of Mizoram, North East India. Phenological variables such as timing and date, onset, duration, synchrony and amplitude were recorded and derived by following standard methodology. Hypothesis related to phenological pattern of tropics were examined in current study. Leaf fall in is mainly coincided with dry season while leaf flush is overlapped with early rainy season in both the studied species. Flowering in E. variegata is occurred during end of dry season while in E. subumbrans it exhibited during peak rainy season. Fruiting in E. variegata is coincided with early to peak rainy season while in E. subumbrans it occurred during dry season and cool climatic conditions. This study supports differential flowering and fruiting timing among related genera, which might be important to avoid competition for pollinators and driving factor for high faunal diversity in tropics. Thus, this study is rigging the hypothesis that the evolutionary limitations are more reliant than the local environment and biotic conditions.
Authors and Affiliations
SANJAY KUMAR KEWAT
Keywords
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