APP下载

芥菜型油菜重组自交系群体农艺性状变异及其统计分析

2017-03-21田恩堂李鲁峰贾世燕林树春

湖北农业科学 2017年3期

田恩堂++李鲁峰++贾世燕++林树春

摘要:对包含了139份芥菜型油菜(Brassica juncea L.)的重组自交系群体的部分农艺性状进行相关性和主成分分析。结果表明,在贵阳市所处环境条件下,不同株系的开花期、每角粒数、株高和千粒重表现出较大的变异,主成分分析将它们划入到3个群中。Pearson相关性分析显示株高与开花期呈显著正相关,而千粒重与开花期和每角粒数则呈极显著负相关。

关键词:芥菜型油菜(Brassica juncea L.);农艺性状;主成分分析;相关性分析

中图分类号:S565.4 文献标识码:A 文章编号:0439-8114(2017)03-0422-03

DOI:10.14088/j.cnki.issn0439-8114.2017.03.007

The Variation and Statistic Analysis of Agronomic Traits of

Recombinant Inbred Lines of Brassica juncea L.

TIAN En-tang1,LI Lu-feng2,JIA Shi-yan3,LIN Shu-chun1

(1.Oil Crops Research Institute,Guizhou University,Guiyang 550025,China; 2.Agricultural Science and Technology Institute of Xiaoshan District of Hangzhou City,Hangzhou 311200,China;3.Seed Control Station of Xiaoshan District of Hangzhou City,Hangzhou 311200,China)

Abstract: Correlation ananlysis and principal component analysis of the agronomic traits of one F5 recombinant inbred lines of B. juncea were carried out. The results showed that, in Guiyang environment, the agronomic traits of these lines showed great variation, which were further divided into three groups according to the PCA(Principal Component Analysis) analysis. The Pearson correlation analysis indicated that the plant height and flowering time were significantly positively correlated, the thousand seed weight with flowering time and seed number of each pot were significantly negatively correlated.

Key words: Brassica juncea L.; agronomic traits; principal component analysis; correlation ananlysis

甘藍型油菜(Brassica napus L.,AACC,2n=38)、芥菜型油菜(B. juncea L.,AABB,2n=36)和白菜型油菜(B. rapa,AA,2n=20)是中国芸薹属的三大油料作物[1]。芥菜型油菜抗病虫、耐贫瘠、黄子、耐旱、可做蔬菜和调味料用等特性使其具有重要经济价值[2-5]。而中国作为芥菜型油菜的重要起源中心,芥菜型油菜种质资源比较丰富。不断加强芥菜型油菜的理论和应用研究对于增强抗性基因资源在甘蓝型油菜和白菜型油菜中的应用,促进中国山地农业的发展和保障中国油料生产的安全具有重要的意义。

尽管芥菜型油菜有许多优良特性,但也存在产量低的弱点[6]。其农艺性状和品质性状与目前广泛种质的甘蓝型油菜存在较大差距。甘蓝型油菜目前早已实现了F1杂种生产的商业化,而芥菜型油菜的相关工作才刚刚起步[7]。加强芥菜型油菜农艺和品质性状的遗传改良和相关研究,不断培育优质、高产、适应山地农业需求的芥菜型油菜新品系是芥菜型油菜育种工作的当务之急。……

登录APP查看全文