谷子早熟品种衡早一号遗传关系分析与鉴定

Genetic Analysis and Identification of the Early-Maturing Variety Hengzao 1

摘要: 本研究主要利用SSR分子标记技术，将谷子早熟品种衡早一号及其他11种早熟品种、11种晚熟品种和7种区试品种的遗传关系进行分析，构建衡早一号与其他品种的遗传关系图谱，为其作为新的C4模式植物候选基因型研究奠定基础，同时也为功能基因验证做准备。本研究通过对30份不同谷子样品进行聚类分析，成功构建UPGMA聚类图。对30份不同谷子品种的遗传分析发现，其相似性系数在0.86~0.92之间，分为3个大类。衡早一号与区试主栽品种尤其是冀谷25和承谷黄的遗传关系最紧密。因此，对衡早一号与其他品种遗传关系的鉴定，为进一步研究衡早一号的遗传特性奠定基础。同时也为谷子作为C4模式植物选择合适的基因型进行功能基因验证做准备。

Abstract: In this study using SSR molecular marker technology we carried out the genetic relationship analysis and comparison between the early-maturing variety Hengzao 1 and other eleven early-maturing varieties including eleven late-maturing varieties and seven varieties in regional trial. Genetic relationship map was constructed for Hengzao 1 and other varieties. The results would lay a foundation to the new C4 model plant genotype for Hengzao 1 and make preparations for the functional gene identification. In this study we successfully constructed UPGMA dendrogram according to cluster analysis on thirty different foxtail millet varieties based on the similar coefficients. All the varieties were classified into three major groups and the similar coefficient was in the range of 0.86~0.92. Hengzao 1 had the closest genetic relationship with the regional trial cultivar Jigu 25 and Chengguhuang. Therefore, the elucidation of the genetic relationship between Hengzao 1 and other main cultivars would lay a foundation to the study of the genetic characteristic of Hengzao 1. Mean-while, it also would give the preparation for the functional gene validation of foxtail millet as C4 model plant.