功能基因对小麦苗期不同氮磷水平下根系性状的影响  

Effects of Functional Genes on Root Traits of Wheat at Different Nitrogen and Phosphorus Levels at Seedling Stage

作　　者：于海涛[1] 宋顺[1] 赵春华 关春晖 崔俊鹏 侯俞竹 张萌娜 刘朦朦 YU Hai-tao;SONG Shun;ZHAO Chun-hua(Weifang Academy of Agricultural Sciences,Weifang,Shandong 261041;Ludong University,Yantai,Shandong 264000)

机构地区：[1]山东省潍坊市农业科学院,山东潍坊261041 [2]鲁东大学,山东烟台264000

出　　处：《安徽农业科学》2018年第21期55-60,共6页Journal of Anhui Agricultural Sciences

基　　金：山东省现代农业产业技术体系小麦创新团队建设项目

摘　　要：[目的]研究功能基因对小麦苗期不同氮磷水平下根系性状影响。[方法]以科农9204与京411构建的KJ-RIL群体为材料,进行苗期低氮、低磷及对照水培。对苗期根系性状结合10个功能标记进行基因型分类汇总分析。[结果]高分子量麦谷蛋白Glu-A1、GluB1,小麦细胞壁转化酶基因Ta Cwi-A1,小麦黄色素含量基因Psy-B1等显著影响对照、低条件小麦苗期根系的主根长、根体积、根面积、根尖数以及总根长,且影响不完全一致;小麦多酚氧化酶基因PPO-A1对低磷条件下根系性状影响较大;矮秆基因Rht-B1b、Rht-B1a仅影响苗期株高,低分子量麦谷蛋白Glu-A3、小麦蔗糖合成酶基因Ta Sus2、籽粒硬度相关基因Pinb等对根系性状无明显效应。[结论]该研究为小麦合理施肥提供理论依据。[Objective]To research the effects of functional genes on root traits of wheat at different nitrogen and phosphorus levels at seedling stage.[Method]With a recombinant inbred line(RIL)population derived from two Chinese winter wheat varieties Kenong9204 and Jing411 as the research mateirals,we studied the root morphology at seedling stage under normal nitrogen(CK)condition,low nitrogen(LN)condition,and low phosphorus condition.Genetic effects of ten known genes on root related traits were studied using the corresponding functional markers.[Result]Glu-A1,Glu-B1,TaCwi-A1 and Psy-B1 were significantly correlated with root morphology including main root length,root volume,root area,tip number and the total root length under CK and LN conditions.These effects were distinct to some extent under different nutrition conditions.PPO-A1 are significantly correlated with root morphology under LP condition.Rht-B1b and Rht-B1a were significantly correlated with the height in seedling stage.Glu-A3,TaSus2 and Pinb did not have any effects on root morphology at seedling stage.[Conclusion]This research provided theoretical foundation for the rational fertilization of wheat.

关 键 词：小麦 根系性状 功能基因 

分 类 号：S512.1[农业科学—作物学]