Comparison of leaf morphological,anatomical,and photosynthetic responses to drought stress among eight apple rootstocks  

作　　者：Pengpeng Sun Muhammad Mobeen Tahir Xian Lu Zhimin Liu Xiaoyun Zhang Xiya Zuo Yun Shao Xiangyun Xiao Na An Chao Wang Dong Zhang Weiwei Yang 

机构地区：[1]College of Horticulture,Yangling Sub‐Center of the National Center for Apple Improvement,Northwest A&F University,Yangling 712100,Shaanxi,China [2]College of Agriculture,The Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization in Xinjiang Production and Construction Group,Shihezi University,Shihezi 832003,Xinjiang,China

出　　处：《Fruit Research》2022年第1期195-207,共13页果树研究（英文）

基　　金：supported by Shaanxi Apple Industry Science and Technology Project,Grant/Award Number:2020zdzx03-0-04;Science and Technology Activity Fund for Returnees Studying Abroad of Shaanxi Province,Grant/Award Number:2020-07;Cyrus Tang Foundation and the earmarked fund CARS,Grant/Award Number:CARS-27.

摘　　要：The drought resistance of eight commonly used apple rootstocks under natural drought conditions was examined to provide clues for the selection,promotion,and utilization of drought-resistant apple rootstocks.The ultrastructural differences and physiological and biochemical characteristics of the leaves of eight apple rootstocks under drought stress were observed.The index changes were used to rank drought resistance by the membership function method comprehensively.The results showed that the leaf thickness,palisade tissue thickness,sponge tissue thickness,net photosynthetic rate,and chlorophyll content were significantly higher in‘Fupingqiuzi'than those of other rootstocks at various stress conditions.The leaf water content and water use efficiency of'Qingzhen 1'were significantly higher than those of other rootstocks under different stress conditions.The root vigor of‘B.9'was significantly higher than that of other rootstocks.The results of membership function analysis showed that the drought resistance of different rootstocks was in the order:‘Fupingqiuzi'>‘Qingzhen 1'>‘B.9'>‘MM.111'>‘GM256'>‘MM.106'>‘M.26'>‘M.9-Nic29'.‘Fupingqiuzi'had the strongest drought resistance,and‘Qingzhen 1'and‘B.9'were also relatively droughtresistant.These rootstocks can be used as raw materials for drought-resistant apple rootstock breeding and are propagated and utilized in arid areas.

关 键 词：ROOTSTOCKS BREEDING DROUGHT 

分 类 号：S66[农业科学—果树学]