高温和单氰胺对油桃休眠花芽呼吸代谢的影响

应用生态学报 ›› 2012, Vol. 23 ›› Issue (09): 2504-2508.

高温和单氰胺对油桃休眠花芽呼吸代谢的影响

谭钺^1,2,冷传远^1,2,李玲^1,2,徐臣善³,陈修德^1,2,高东升^1,2**

(¹山东农业大学园艺科学与工程学院, 山东泰安 271018; ²作物生物学国家重点实验室, 山东泰安 271018; ³德州学院农学系, 山东德州 253023)

出版日期:2012-09-18 发布日期:2012-09-18

Effects of high temperature and hydrogen cyanamide on dormant nectarine’s floral bud respiratory metabolism.

TAN Yue^1,2, LENG Chuan-yuan^1,2, LI Ling^1,2, XU Chen-shan³, CHEN Xiu-de^1,2, GAO Dong-sheng^1,2

(¹College of Horticulture Science and Engineering,Shandong Agricultural University, Tai’an 271018, Shandong, China; ²State Key Laboratory of Crop Biology, Tai’an 271018, Shandong, China; ³Department of Agronomy, Dezhou College, Dezhou 253023, Shandong, China).

Online:2012-09-18 Published:2012-09-18

摘要/Abstract

摘要： 以3年生盆栽‘曙光’油桃为材料,研究油桃自然休眠过程中50 ℃高温和单氰胺对花芽呼吸代谢的影响.结果表明: 高温和单氰胺均可以打破油桃的自然休眠,导致休眠花芽呼吸代谢显著下降,其呼吸代谢的衰减可持续数小时.主要呼吸途径三羧酸循环(TCA)和磷酸戊糖途径(PPP)的运行均受到影响.未经破眠处理的花芽TCA和PPP均呈衰减趋势,而高温和单氰胺诱导了早期呼吸衰减结束后PPP的迅速活化.高温还表现出对TCA恢复的诱导,而单氰胺在96 h内未表现出这种作用.在高温和单氰胺打破自然休眠的机制中,呼吸衰减和随后出现的PPP活化可能是重要的组成部分.

Abstract: Taking 3-year old potted ‘Shuguang’ nectarine (Prunus persicavar. nectarianacv. Shuguang) as test material, this paper studied the effects of high temperature (50 ℃, HT) and hydrogen cyanamide (HC) on the floral bud respiratory metabolism of the tree during its natural dormancy. Both HT and HC could break the natural dormancy of the tree, and lead to a significant decrease in the respiratory metabolism of floral buds for several hours. The main respiratory pathways, tricarboxylic acid cycle (TCA) and pentose phosphate pathway (PPP), were affected. For the buds not received dormancy-breaking treatments, both the TCA and the PPP decreased, while treating with HT and HC induced a rapid recovery of PPP after the early respiratory attenuation. HT also induced the recovery of TCA, but HC did not show this effect in 96 hours. Therefore, respiratory attenuation and the following PPP activation could be the important part in the floral bud respiratory mechanism of HT- and HC-induced dormancy release.

谭钺1,2,冷传远1,2,李玲1,2,徐臣善3,陈修德1,2,高东升1,2**. 高温和单氰胺对油桃休眠花芽呼吸代谢的影响[J]. 应用生态学报, 2012, 23(09): 2504-2508.

TAN Yue1,2, LENG Chuan-yuan1,2, LI Ling1,2, XU Chen-shan3, CHEN Xiu-de1,2, GAO Dong-sheng1,2. Effects of high temperature and hydrogen cyanamide on dormant nectarine’s floral bud respiratory metabolism.[J]. Chinese Journal of Applied Ecology, 2012, 23(09): 2504-2508.