Effect of Photoperiod on Key Enzyme Activities of Respiration in Nectarine Buds During Dormancy Induction  

作　　者：LI Dong-mei LI Ling TAN Yue CHEN Xiu-de ZHANG Hai-sen GAO Dong-sheng LI Jin 

机构地区：[1]State Key Laboratory of Crop Biology/College of Horticulture Science and Engineering/Research Center for Apple Engineering and Technology, Shandong Agricultural University, Tai＇an 271018, P.R.China [2]State Key Laboratory of Crop Biology/College of Life Sciences, Shandong Agricultural University, Tai＇an 271018, P.R.China

出　　处：《Agricultural Sciences in China》2011年第7期1026-1031,共6页中国农业科学（英文版）

基　　金：supported by the National High-Tech R&D Program (863) of China (2005AA247041);the Key Projects in the National Science & Technology Pillar Program of China during the 11th Five-Year Plan period (2006BAD07B06)

摘　　要：Shuguang （Prunus persica var. nectariana cv. Shuguang） nectarine was used to study effects of photoperiod on key-enzyme activities of respiration during dormancy induction. The dormancy status was determined with sprouting ability. Spectrophotometry was used to investigate activities of phosphohexose isomerase （PGI）, malic dehydrogenase （MDH）, and glucose-6-phosphate dehydrogenase （G6PDH）. The results revealed that short day （SD） treatment promoted dormancy induction while long day （LD） treatment postponed the process. During dormancy induction, PGI activities declined, MDH activities changed little, and G6PDH activities increased both in flower buds and leaf buds. PGI activities and MDH activities in SD treatment were lower than control, and G6PDH activities were higher, which was opposite with LD treatment. The changes of respiratory key-enzyme activities were adjusted by photoperiod and correlated with the development of dormancy induction.Shuguang （Prunus persica var. nectariana cv. Shuguang） nectarine was used to study effects of photoperiod on key-enzyme activities of respiration during dormancy induction. The dormancy status was determined with sprouting ability. Spectrophotometry was used to investigate activities of phosphohexose isomerase （PGI）, malic dehydrogenase （MDH）, and glucose-6-phosphate dehydrogenase （G6PDH）. The results revealed that short day （SD） treatment promoted dormancy induction while long day （LD） treatment postponed the process. During dormancy induction, PGI activities declined, MDH activities changed little, and G6PDH activities increased both in flower buds and leaf buds. PGI activities and MDH activities in SD treatment were lower than control, and G6PDH activities were higher, which was opposite with LD treatment. The changes of respiratory key-enzyme activities were adjusted by photoperiod and correlated with the development of dormancy induction.

关 键 词：PHOTOPERIOD nectarine buds dormancy induction PGI MDA G6PDH 

分 类 号：S667.1[农业科学—果树学] TE626.21[农业科学—园艺学]