国审小麦品种‘衡观35’中重要农艺性状控制基因的检测和分析  

Detection and Analysis of Agronomically Important Genes in the National Certified Wheat Variety‘Hengguan 35'

作　　者：杨玉双[1] 李强[2] 王道文[1] 陈秀敏[2] 张坤普[1] 

机构地区：[1]中国科学院遗传与发育生物学研究所植物细胞与染色体工程国家重点实验室,北京100101 [2]河北省农林科学院旱作农业研究所,河北衡水053000

出　　处：《中国农学通报》2014年第9期105-112,共8页Chinese Agricultural Science Bulletin

基　　金：国家重点基础研究规划项目"小麦高产优质品种设计和选育的应用基础研究"(2009CB118300)

摘　　要：为了深入认识‘衡观35’重要农艺性状分子机理,通过基因功能标记或与基因紧密连锁的微卫星标记的检测,结合植株的田间表现,分析了国审小麦品种‘衡观35’含有的控制重要农艺性状的关键基因。结果表明,‘衡观35’含有1BL/1RS易位染色体,这与其丰产性和较广泛的生态适应性是一致的。‘衡观35’含2个隐性春化基因(vrn-A1和vrn-B1)和1个显性春化基因(Vrn-D1),表明其主要为冬性品种,抗寒性好,同时又具有春天早发和生长快的特点。‘衡观35’含有对光周期不敏感的Ppd-D1a基因,这与其具有早熟和可在多个生态区广泛种植的特性是一致的。‘衡观35’含Rht1、Rht2、Rht4和Rht8四个矮秆基因的分子标记,这可能其株高较低的重要遗传基础。‘衡观35’含有Pm4和Pm16基因的分子标记,在田间表现出较好的白粉病抗性。‘衡观35’含有YrTp2基因的分子标记,在田间上表现出较好的条锈病抗性。以上信息为深入认识‘衡观35’重要农艺性状分子机理提供了线索,对在未来小麦遗传改良中高效利用该品种的重要基因具有实用价值。To study valuable information on a wide range of important agronomic genes in‘Hengguan 35＇, by using functional or genetically linked molecular markers, combined with field observations, we detected and analyzed the genes controlling important agronomic traits in the national certified wheat variety‘Hengguan 35＇. The results showed that,‘Hengguan 35＇was 1BL/1RS translocation line, which was consistent with its high yield level and wide environmental adaptability.‘Hengguan 35＇carried two recessive vernalization genes（vrnA1 and vrn-B1） and one dominant vernalization gene（Vrn-D1）, which agreed well with its strong tolerance to cold stress in winter and early and fast resumption of growth in spring.‘Hengguan 35＇contained the photoperiod insensitive gene Ppd-D1a, which was in line with its relatively early maturity in many wheat cultivation regions.‘Hengguan 35＇probably had four dwarf genes（Rht1, Rht2, Rht4, and Rht8）, which was inaccordance with its lower plant height and improved tolerance to lodging.‘Hengguan 35＇probably hosted Pm4 and Pm16 genes, which may correspond with its field resistance to powdery mildew.‘Hengguan 35＇probably harbored YrTp2 gene, which may account for its field resistance to stripe rust disease. Our study provides valuable information on a wide range of important agronomic genes in‘Hengguan 35＇, which may facilitate the use of this germplasm for improving wheat yield and environmental adaptability in further research.

关 键 词：小麦 '衡观35’ 功能(或连锁)标记 抗旱 高产 分子标记辅助育种 

分 类 号：Q3[生物学—遗传学]