Accumulated chilling hours during endodormancy impact blooming and fruit shape development in peach(Prunus persica L.)  

作　　者：LI Yong FANG Wei-chao ZHU Geng-rui CAO Ke CHEN Chang-wen WANG Xin-wei WANG Li-rong 

机构地区：[1]Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences

出　　处：《Journal of Integrative Agriculture》2016年第6期1267-1274,共8页农业科学学报（英文版）

基　　金：supported by the grants from the Agricultural Science and Technology Innovation Program, China (CAAS-ASTIP-2015-ZFRI);the Comprehensive Experimental Station of Zhengzhou of China Agriculture Research System (CARS-31-Z-10)

摘　　要：Winter chill is essential for the growth and development of deciduous species. To understand the relationship between accumulated chilling hours during endodormancy and blooming and fruit shape development, we controlled chilling hours and investigated their effects on blooming date and fruit shape of peaches. The results showed that the number of days to full bloom date and the heat requirement for blooming were negatively correlated with accumulated chilling hours. Accumulated chilling hours were significantly negatively correlated with fruit shape index and fruit tip lengths, suggesting that the number of chilling hours affect the fruit shape development. Fewer accumulated chilling hours may be the major reason for longer fruit shape and protruding fruit tips. In conclusion, our results indicate specifically that decreased winter chilling hours can delay the bloom date and may lead to aberrant fruit shape development in peaches. Our study provides preliminary insights into the response of temperate fruit species to global climate change.Winter chill is essential for the growth and development of deciduous species. To understand the relationship between accumulated chilling hours during endodormancy and blooming and fruit shape development, we controlled chilling hours and investigated their effects on blooming date and fruit shape of peaches. The results showed that the number of days to full bloom date and the heat requirement for blooming were negatively correlated with accumulated chilling hours. Accumulated chilling hours were significantly negatively correlated with fruit shape index and fruit tip lengths, suggesting that the number of chilling hours affect the fruit shape development. Fewer accumulated chilling hours may be the major reason for longer fruit shape and protruding fruit tips. In conclusion, our results indicate specifically that decreased winter chilling hours can delay the bloom date and may lead to aberrant fruit shape development in peaches. Our study provides preliminary insights into the response of temperate fruit species to global climate change.

关 键 词：accumulated chilling hours BLOOMING fruit shape ENDODORMANCY Prunus persica 

分 类 号：S662.1[农业科学—果树学]