玉米杂交种种子活力与成熟度关系  

Relationship of Hybrid Maize Seeds Vitality and Its Maturity

作　　者：周海宁[1,2,3] 雷志刚[4] 韩登旭[1] 杨杰[1] 阿布来提[1] 李铭东[1] 王业建[1] 郗浩江[1] 梁晓玲[1] 孔广超[2] 

机构地区：[1]新疆农业科学院粮食作物研究所,乌鲁木齐830091 [2]石河子大学农学院,新疆石河子832003 [3]新疆兵团四师农科所,新疆伊宁835000 [4]新疆畜牧科学院草原研究所,乌鲁木齐830000

出　　处：《玉米科学》2016年第3期110-116,共7页Journal of Maize Sciences

基　　金：国家公益性行业科研专项(201303002);国家玉米产业技术体系建设专项(CARS-02-68);新疆农业科学院青年科技基金项目(xjnkq-2014006)

摘　　要：以早熟杂交玉米品种新玉29号、新玉35号以及晚熟品种郑单958和先玉335种子为材料,测定授粉后不同时期种子发芽指数、活力指数、田间出苗率,分析种子活力与成熟度的关系。结果表明,在新疆地区早熟玉米品种在授粉后45-48 d（黑层出现前3-6 d）、含水量29.1%-34.3%时收获可获较得高活力种子;晚熟品种在授粉后54-57 d（黑层出现前3-6 d）、含水量34.7%-38.1%时收获可获得高活力种子。Four maize hybrids of Xinyu 29, Xinyu 35, Xianyu335 and Zhengdan958 were used as the materials,and the germination rates and vigor of the harvested seeds of the four cultivars were investigated using standard ger-mination tests and field investigations. The relationship of maize hybrid seed maturity and seed vigor was analyzed.The results showed that the early maturing varieties seeds, Xinyu 29, Xinyu 35, had a better performance with high-er vigor on the 45 thto 48thd after pollination, the 3^th to 6^thd before black layer appearing and with moistures content29.1% to 34.3% And the late maturing varieties seeds, Xianyu335 and Zhengdan958, had a higher vigor on the 54^th to 57 thd after pollination（3 to 6 d before black layer appearing）, and with the moistures content 34.7% to 38.1%.

关 键 词：玉米 种子活力 收获期 成熟度 发芽率 出苗率 

分 类 号：S513.01[农业科学—作物学]