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利用20个表型性状和51个SSR标记分析25份黑龙江省一积温带区域试验品系、20份21世纪推广品种和14份21世纪以前推广品种的的遗传多样性,共检测到92个表型变异和166个SSR等位基因,其中21世纪区试品系表型变异数和SSR等位基因数分别为64,142个(平均2.78个),21世纪推广品种表型变异数和等位基因数分别为78,126个(平均2.47个),21世纪以前推广品种表型变异数和等位基因数分别为82,127个(平均2.49个)。遗传变异主要存在于品种间(94%),群体之间(6%)差异较小。聚类分析将供试材料分为4类,21世纪区试品系形成了独立的类群,其SSR遗传多样性极显著高于21世纪以前和21世纪推广品种,但是黑龙江水稻遗传多样性相对于其他地区仍处于较低水平,应进一步拓宽遗传基础。
Twenty phenotypic traits and 51 SSR markers were used to analyze the genetic diversity of 25 tested plots in a plot of temperate zone of Heilongjiang Province, 20 propagules in the 21st century and 14 cultivars promoted before the 21st century. A total of 92 phenotypes Variation and 166 SSR alleles. Among them, the number of phenotypic variation and SSR alleles in the tested cultivars in the 21st century were 64,142 (average 2.78), respectively. The number of phenotypic variation and alleles in the popularized varieties in the 21st century were 78,126 (average 2.47). Before the 21st century, the number of phenotypic variation and the number of alleles of the introduced varieties were 82,127 (average 2.49). Genetic variation mainly existed among cultivars (94%), with a small difference between groups (6%). Cluster analysis divided the tested materials into four groups. In the 21st century, the test lines formed independent groups, and their SSR genetic diversity was significantly higher than those promoted before the 21st century and the 21st century. However, the genetic diversity of Heilongjiang rice relative to other The area is still at a low level and genetic basis should be further widened.