中国农业科学（英文版）2010，Vol.9Issue(10)：1448-1454,7.DOI:10.1016/S1671-2927(09)60236-4
Respiratory Response of Dormant Nectarine Floral Buds on Chilling Deficiency
Respiratory Response of Dormant Nectarine Floral Buds on Chilling Deficiency
摘要
Abstract
Changes in main biochemical respiratory pathways in dormant nectarine floral buds were studied with nectarine trees (Prunus persica.var,nectariana cv.Shuguang) in order to determine the function of respiration in dormancy release.Oxygen-electrode system and respiratory inhibitors were used to measure total respiratory rates and rates of respiratory pathways.Results showed that chilling deficiency blocked the transition of respiratory mode,and made buds stay in a state of high level pentose phosphate pathway (PPP) and low level tricarboxylic acid cycle (TCA).The decline of PPP and activation of TCA occurred synchronously with the release of dormancy.In addition,the inhibition of PPP stimulated a respiration increase related with TCA.It could be concluded that the function of PPP activation in dormancy release might be limited and PPP declination inducing TCA activation might be part of respiration mode transition mechanism during bud sprouting.关键词
nectarine floral buds/dormancy release/chilling deficiency/pentose phosphate pathway/tricarboxylic acid cycleKey words
nectarine floral buds/dormancy release/chilling deficiency/pentose phosphate pathway/tricarboxylic acid cycle分类
农业科技引用本文复制引用
TAN Yue,GAO Dong-sheng,LI Ling,CHEN Xiu-de,XU Ai-hong..Respiratory Response of Dormant Nectarine Floral Buds on Chilling Deficiency[J].中国农业科学（英文版）,2010,9(10):1448-1454,7.基金项目
This work was supported by the National 863 Program of China (2005AA247041) and Key Projects in the National Science and Technology Pillar Program during the 11th Five-Year Plan period,China (2006BAD07B06). （2005AA247041）
