PEG胁迫对8个不同小麦品种幼苗根系的影响  

Effect of water stress by PEG on the seedling root characteristics of 8 wheat varieties

作　　者：王稼苜 张志勇[1] 欧行奇[1] 胡杨[2] 

机构地区：[1]河南科技学院,河南新乡453003 [2]广西大学,广西南宁530004

出　　处：《河南科技学院学报（自然科学版）》2015年第3期1-5,共5页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：新乡市科技发展计划项目(06N054)

摘　　要：以百农矮抗58、百农207、洛旱7号等8个耐旱性不同的冬小麦品种为材料,以PEG6000为水分胁迫剂,对不同小麦品种在水分胁迫下的根系特性进行比较研究.采用根系图像扫描和Win RHIZO软件进行根系分析,比较不同品种的根长度相对增长率、根面积相对增长率、根系平均直径相对增长率等5个指标,采用方差分析、多重比较、聚类分析等统计分析方法,判别供试品种的抗旱性.结果表明:不同小麦品种在200 g/L质量浓度的PEG6000胁迫下,抗旱性存在一定差异.依抗旱性可将供试小麦品种分成4类:第一类包括矮抗58与百农64;第二类包括百农207、洛旱7号、周麦16和华育198;第三类为周麦22;第四类为周麦18.该结果可为小麦根部性状改良和抗旱性遗传资源利用提供参考.The root characteristics test for 8 wheat varieties was conducted under 20g/L PEG6000 stress.5 indicators of roots was analysed by root image scanning and WinRHIZO software.The results showed that：the drought stress resistance of 8 wheat varieties were evaluated comprehensively by 200 g/L PEG6000 stress ; 8 wheat varieties can be categorized as four classes,such as the first class includes Bainong AK58 and Bainong 64;the second category includes Bainong 207,Luohan 7,Zhoumai 16 and Huayu 198 ;the third category includes Zhoumai 22;the fourth is Zhoumai 18 varieties.The results can be used as improved wheat root traits and drought resistance genetic resources to take advantage of reference.

关 键 词：小麦 抗旱性 PEG 根系特性 

分 类 号：S512.1[农业科学—作物学]