Li Zheng-Hong, Gao Dong-Sheng, Li Xian-Li
College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an 271018, China.
Zhi Wu Sheng Li Yu Fen Zi Sheng Wu Xue Xue Bao. 2006 Apr;32(2):156-62.
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. KCN plus SHAM had the same effect on bud respiration rate as SHAM acting alone. The time KCN plus SHAM began to increase bud respiration rate or terminated was about 7 d earlier than SHAM did, which was closely associated with the different stage of dormancy.
对曙光和五月火这两个品种的油桃花芽休眠期的呼吸速率进行了研究。结果表明，两个品种的花芽呼吸速率均随休眠阶段而变化。对照花芽的呼吸速率在休眠前稳步下降，而曙光品种从11月5日、五月火品种从10月29日开始缓慢上升，然后在12月17日休眠结束时急剧下降。氰化物（KCN）在整个时期仅部分抑制了油桃花芽休眠期的呼吸速率，且花芽呼吸速率的变化趋势与对照样品在整个时期相同。氰化物对休眠油桃花芽呼吸速率的抑制程度大致相同。水杨羟肟酸（SHAM）对花芽呼吸速率的影响随时间而变化。SHAM在休眠前和休眠解除后降低花芽呼吸速率，但在休眠期增加花芽呼吸速率。在休眠开始时，SHAM使所有花芽的呼吸速率增加了三倍以上，且随着休眠期的延长，增加程度逐渐降低，直到休眠结束时呼吸速率再次下降。KCN加SHAM对花芽呼吸速率产生的影响与单独使用SHAM相同。KCN加SHAM开始增加或终止花芽呼吸速率的时间比SHAM早约7天，这与休眠的不同阶段密切相关。
