Effects of key growth conditions on endogenous hormone content in tillering stem bases,germination of lateral buds,and biomass allocation in Indocalamus decorus  

作　　者：Guibin Gao Hao Zhong Zhizhuang Wu Neng Li Zheke Zhong Yanhong Pan Liangru Wu 

机构地区：[1]China National Bamboo Research Center,Wenyi Road 310,Hangzhou 310012,China [2]Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province,Wenyi Road 310,Hangzhou 310012,China

出　　处：《Journal of Forestry Research》2018年第6期1547-1555,共9页林业研究（英文版）

基　　金：financially supported by the Fundamental Research Funds for the Central Nonprofit Research Institution of CAF(CAFYBB2014QA038);Natural Science Foundation of Zhejiang Province(LY14C030008);Science and Technology Planning Project of Zhejiang Province(2014F10047)

摘　　要：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.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.

关 键 词：Biomass allocation Ecological factor Indocalamus decorus Lateral bud PLANTLET TILLERING 

分 类 号：S7[农业科学—林学]