盐胁迫下不同来源粳稻选育品种的主要农艺性状鉴定分析  

Main Agronomic Traits for Improved Japonica Rice Varieties under Salt Stress

作　　者：付华[1,2] 张启星[3] 曹桂兰[2] 王兴盛[1] 韩龙植[2] 

机构地区：[1]宁夏大学农学院,银川750021 [2]中国农业科学院作物科学研究所/国家农作物基因资源与基因改良重大科学工程/农业部作物种质资源与生物技术重点开放实验室,北京100081 [3]河北省农林科学院滨海农业研究所,唐海063200

出　　处：《植物遗传资源学报》2013年第1期42-51,共10页Journal of Plant Genetic Resources

基　　金：国家科技支撑项目(2006BAD13B01);"973"项目(2004CB117201);作物种质资源保护项目[NB10-2130135(25-30)-01];国家科技基础条件平台项目(2005DKA21001-01)

摘　　要：以选自30个国家的402份粳稻选育品种作为试验材料,分析了自然条件和盐胁迫下不同来源粳稻选育品种主要农艺性状的表型差异和聚类特点。结果表明,盐胁迫下各个国家品种的主要农艺性状有明显的差异,主要表现在抽穗期明显推迟,秆长和穗长明显缩短,穗粒数和有效穗数明显减少,结实率和千粒重明显降低。在盐胁迫下共筛选出了18份具有较强的耐盐性的材料。对主要农艺性状和聚类结果的分析表明,各个国家间粳稻选育品种耐盐性和聚类结果与各国家所处地理位置、纬度和气候条件有一定的相关性。In this paper, We chosed 402 japonica varieties from 30 countries as experimental materials, ana- lyzed the phenotypic differences and clustering features of the main agronomic traits of Japonica varieties under nat- ural condition and salt stress. The result indicated that there were significant differences in the main agronomic traits of japonica varieties from different countries under salt stress,including significant delay of the heading days, shorter culms length, and panicle length,less number of effective heads and grains per head, reduction of setting rate, and dry-weight of seed. 18 japonica varieties show a strong resistance to salt stress. By analyzation of the main agronomic traits and clustering,we found that salt tolerance and clustering result of japonica varieties had a certain correlation with geographic location, latitude, and climate conditions in different countries.

关 键 词：粳稻选育品种 耐盐性 盐胁迫 聚类分析 

分 类 号：S511.22[农业科学—作物学]