PMID: 16622313Apr 20, 2006Paper

The relation between en-dormancy and changes in two main electron transport pathways of nectarine (Prunus persica var. nectariana) buds

Zhi wu sheng li yu fen zi sheng wu xue xue bao = Journal of plant physiology and molecular biology
Zheng-Hong LiXian-Li Li

Abstract

Respiration rate of buds of Prunus persica var. nectariana Maxim. cv. Shuguang and Mayfire was studied during dormancy. The results showed that the bud respiration rate changed with the stage of dormancy for both cultivars. Respiration rate of buds of the controls decreased steadily before dormancy, while increased slowly from November 5th for Shuguang and October 29th for Mayfire, and then decreased sharply on December 17th at which dormancy was terminated. Cyanide (KCN) only partially inhibited respiration rate of dormant buds of nectarine during the whole period, and the trend of the buds respiration rate followed the same pattern as the control samples during the entire period. Cyanide inhibited the respiration rate of dormant nectarine buds to roughly the same degree. The effect of salicylhydroxamic acid (SHAM) on bud respiration rate varied with time. SHAM decreased bud respiration rate before dormancy and after the release of dormancy, but increased bud respiration rate during dormancy. SHAM increased bud respiration rate more than three times at the beginning of dormancy for all buds and the degree decreased gradually along with the dormant period until turn to decrease the respiration rate again at the end of dormancy....Continue Reading

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