玉米DUS测试标准品种在海南性状表达差异性分析  

Analysis on Difference of the Expression of Characteristics of Maize Standard Varieties for DUS Testing in Hainan

作　　者：刘迪发[1] 徐丽[1] 李祥恩 符小琴 姚碧娇 陈媚[1] 张如莲[1] 高玲[1] LIU Di-fa;XU Li;LI Xiang-en;FU Xiao-qin;YAO Bi-jiao;CHEN Mei;ZHANG Ru-lian;GAO Ling(Tropical Crops Genetic Resources Institute,CATAS/Danzhou Sub-Center for DUS Testing of New Varieties of Plants,Ministry of Agriculture and Rural Affairs,Danzhou 571737,China)

机构地区：[1]中国热带农业科学院热带作物品种资源研究所/农业农村部植物新品种测试(儋州)分中心,海南儋州571737

出　　处：《玉米科学》2021年第3期42-47,共6页Journal of Maize Sciences

基　　金：社会公益研究科研机构基本科研业务费“植物品种测试技术研究”(1630032020040);非财政项目/其他各部委项目“品种DUS测试与技术支撑”(19200092)。

摘　　要：以19份玉米标准品种为试验材料,参照《指南》的赋值,通过符合系数分析玉米DUS测试标准品种在海南性状表达差异性。结果表明,不同标准品种、不同性状在海南的表现与《指南》赋值的差异程度不同。黄C、黄早四两个品种在海南的表现与《指南》赋值的差异较大;U8112、丹340、吉833、掖107、早49、掖单4号6个品种在海南的表现与《指南》赋值基本一致,U8112和掖107不宜作为抽丝期性状的标准品种。雄穗最低位侧枝以上主轴长度、叶片宽度两个性状在海南的表达结果与《指南》赋值的差异较大;散粉期、抽丝期、雄穗一级侧枝数目、雄穗侧枝长度、植株高度(自交系)、果穗长度(自交系)、果穗直径(自交系)、果穗穗行数(自交系)8个性状在海南的表达结果与《指南》赋值基本相符。掖478不宜作为散粉期性状的标准品种,铁7922不宜作为植株高度性状的标准品种。Nineteen maize standard varieties were used as experimental material,referring to the assignment in the guide,analyzing the differences of characteristic expression of maize standard varieties for DUS testing in Hainan by coefficient of coincidence(COC).The results showed that,Huang C,Huangzaosi’s performance in Hainan was quite different from the assignment in the guide.U8112,Dan340,Ji833,Ye107,Zao49,Yedan4’s performance in Hainan were basically consistent with the assignment in the guide,the corresponding standard varieties of measurement types of QN can consider to be used.However,U8112 and Ye107 should not be used as the standard varieties for the character of silking stage.The expression of characteristics of the length of the main shaft of the lowest lateral branch and leaf width were quite different from the assignment in the guide.The expression of characteristics such as pollinating period,silking stage,the number of the primary lateral branches of the tassel,the length of lateral branch of the tassel,plant height,ear length,ear diameter,ear row number and other were basically consistent with the assignment in the guide,will give priority to the adoption of corresponding standard varieties.However,Ye478 should not be used as a standard variety for the character of pollination period,Fe7922 should not be used as a standard variety for the character of plant height.

关 键 词：玉米 标准品种 DUS测试 符合系数 差异性分析 

分 类 号：S513.037[农业科学—作物学]