小麦抗穗发芽种质筛选与新品系的抗穗发芽性鉴定  

Screening of Pre-harvest Sprouting Resistant Germplasm Resources of Wheat and Evaluation of Pre-harvest Sprouting Resistance in Some New Strains

作　　者：于春泉[1] 阮仁武[1] 余国东[2] 张世平 宗学凤[1] 张建奎[1] 

机构地区：[1]西南大学农学与生物科技学院,重庆400716 [2]重庆市农业科学院,重庆400055 [3]重庆市三峡农业科学院,重庆万州404001

出　　处：《西南大学学报（自然科学版）》2010年第4期36-40,共5页Journal of Southwest University(Natural Science Edition)

基　　金：重庆市科委科技攻关项目;西南大学博士基金项目

摘　　要：对2007-2008年度国家冬小麦(长江上游组)区域试验和重庆市小麦区域试验的参试品系、部分自育新品系及种质资源,在成熟收获后测定其籽粒发芽率、种子多酚氧化酶(PPO)活性和邻苯二酚种皮染色值.结果表明,参试品种(系)间籽粒发芽率、多酚氧化酶活性、邻苯二酚种皮染色值存在极显著差异;籽粒发芽率与PPO活性及籽粒邻苯二酚染色值呈极显著的正相关;聚类分析把参试的39份小麦品种(系)分为3类并鉴定出黑粒小麦76、漯珍1号等几份材料具有很强的抗穗发芽能力,可在小麦抗穗发芽育种上应用.Germination rate and polyphenol oxidase activity of the harvested seeds and the stained value of seed coat by catechol of 39 wheat genotypes,including the new strains in the national wheat regional test in the upper reaches of the Yangtze River in 2007-2008,the new strains in the Chongqing wheat regional test in 2007-2008 and some new strains developed or stored by the College of Agronomy and Biotechnology,Southwest University,were determined.The wheat cultivars or lines tested showed significant difference in seed germination rate,polyphenol oxidase activity of the seed and the stained value of seed coat by catechol.Seed germination rate was found to be in highly significant positive correlation with the activity of polyphenol oxidase of seed and stained value of seed coat by catechol（p≤0.01）.Cluster analysis classified the materials into three categories.Some genotypes,including HLXM-76 and Luozhen-1,were identified to have strong resistance to pre-harvest sprouting,and they could be applied in the breeding programs for pre-harvest sprouting resistance in wheat.

关 键 词：小麦 穗发芽 多酚氧化酶 

分 类 号：S512.1[农业科学—作物学]