Phenological patterns of tropical trees in relation to climatic factors in a mountain moist forest of Indo-Burma hotspot region

Tropical tree represents high diversity but the phenological studies are scare as compared to that of temperate forest trees. The present study was conducted to understand vegetative and reproductive phenology of five important forest trees in relation to prevailing climatic factors in ecologically...

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Bibliographic Details
Published in:	Vegetos - International journal of plant research Vol. 36; no. 3; pp. 1070 - 1079
Main Authors:	Kumar, Kewat Sanjay, Tripathi, Sri Kant, Khanduri, Vinod Prasad
Format:	Journal Article
Language:	English
Published:	Singapore Springer Nature Singapore 01-09-2023
Subjects:	Biomedical and Life Sciences Life Sciences Plant Anatomy/Development Plant Breeding/Biotechnology Plant Physiology Reproduction Leaf phenology Evergreen Tropics Deciduous Synchrony
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Summary:	Tropical tree represents high diversity but the phenological studies are scare as compared to that of temperate forest trees. The present study was conducted to understand vegetative and reproductive phenology of five important forest trees in relation to prevailing climatic factors in ecologically sensitive tropical moist forest mountainous region of Indo-Burma. Phenological observations, viz. (i) leaf flushing, (ii) leaf fall, (iii) flower onset (date of first flowering), (iv) flower duration (date of first and last flower), (v) mean flowering date (peak of flowering), (vi) mean flowering amplitude (number of flowers produced per unit time), (vii) synchrony (flowering overlap among individuals), (viii) fruit set (development and retention), and ix) fruit drop, were recorded for two consecutive years from January 2012 to May 2014. The relation of observed variables with the climatic factors was analyzed. Four patterns of flowering has been observed in studied species, viz. (i) flowering during complete leafless period in Firmiana colorata (Roxb.) R.Br. (ii) flowering initially during leafless stage and later coinciding with leaf flush due to onset of rain in Gmelina arborea Roxb. (iii) flowering much later after leaf flushing in Lagerstroemia speciosa (L.) Pers. (iv) flowering during mature leaf phase as in evergreen species Schima wallichii Choisy and Callicarpa arborea Roxb. Duration of flowering was significantly positively correlated (p < 0.05) with rainfall, temperature and photoperiod in C. arborea , while other species exhibited weak correlation with climatic variables.
ISSN:	2229-4473 2229-4473
DOI:	10.1007/s42535-022-00474-4