Effects of key growth conditions on endogenous hormone content in tillering stem bases,germination of lateral buds,and biomass allocation in <Emphasis Type="Italic">Indocalamus decorus</Emphasis> |
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| Authors: | Guibin Gao Hao Zhong Zhizhuang Wu Neng Li Zheke Zhong Yanhong Pan Liangru Wu |
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| Institution: | 1.China National Bamboo Research Center,Hangzhou,China;2.Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province,Hangzhou,China |
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| Abstract: | Physiological responses and changes in growth of Indocalamus decorus Q.H.Dai under different ecological conditions are essential for further understanding growth regulation and adaptive mechanisms and establishing an evidence-based management system for optimal growth. In this study, the endogenous hormone content in tillering stem bases, germination of lateral buds, and biomass allocation of this bamboo species in different growth environments were investigated. Among the endogenous hormones in the basal stems of tillers, indole-3-pyruvic acid and zeatin riboside were highly correlated with lateral buds that germinated to form shoots, while gibberellic acid was highly correlated with lateral buds that germinated to form rhizomes. The best lateral bud germination characteristics were achieved with full sun, a density of six plantlets per pot, and watering every 6 days. I. decorus plantlets used different resource allocation strategies depending on treatment. Different ecological factors influenced endogenous hormones in the bamboo stem base, which affected lateral bud germination and biomass allocation. |
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