Morphological responses, sensitivity and tolerance indices of four tropical trees species to drought and waterlogging

Abstract

Yulianti, Sudrajat DJ. 2016. Morphological responses, sensitivity and tolerance indices of four tropical trees species to
drought and waterlogging. Biodiversitas 17: 110-115. Indonesia’s climate model predicts an increase in threat of drought and
waterlogging in several areas. However, knowledge on variations between tropical forest tree species, i.e. Anthocephalus macrophyllus,
Anthocephalus cadamba, Fagraea fragrans, and Magnolia champaca to drought and waterlogging stress are still limited, though they
are relevant to future development of forest ecosystem. The objective of this research is to investigate the adaptability of four potential
tree species to drought and waterlogging stress in a controlled greenhouse. The results showed that the adaptive responses of four
tropical tree species were different, according to the results, all species were more tolerant to waterlogging than to drought stress, which
can be observed from morphological, seedling survival, stress tolerant and stress sensitivity indices. The waterlogging resistant in four
species followed the order of: A. cadamba > F. fragrans > A. macrophyllus, and > M. champaca, while for the drought resistant species
followed the order: A. macrophyllus > A. cadamba > F. fragrans and > M. champaca.