河南农业科学 ›› 2019, Vol. 48 ›› Issue (11): 54-61.DOI: 10.15933/j.cnki.1004-3268.2019.11.008

• 作物栽培·遗传育种 • 上一篇    下一篇

甘蓝型油菜苗期下胚轴长、根长与成熟期主要农艺性状及品质性状的相关性分析

鲁丹丹,李保全,安素妨,侯锦娜   

  1. (河南省农业科学院作物设计中心,河南 郑州 450002)
  • 收稿日期:2019-05-30 出版日期:2019-11-15 发布日期:2019-11-15
  • 通讯作者: 侯锦娜(1982-),女,河北唐山人,助理研究员,博士,主要从事油菜分子生物学研究。E-mail:houjinna_1982@163.com
  • 作者简介:鲁丹丹(1989-),女,河南周口人,助理研究员,硕士,主要从事油菜分子生物学研究。E-mail:ludandan0710@163.com
  • 基金资助:
    国家重点研发计划“七大农作物育种”专项(2018YFD0100600);河南省重点研发与推广专项(科技攻关)(182102110136);河南省超级产粮大省奖励资金扶持粮油良种培育项目(YNK20177516)

 Correlation Analysis of Hypocotyl Length and Root Length at Seedling Stage with Main Agronomic Traits and Quality Traits at Mature Stage in Brassica napus

 LU Dandan,LI Baoquan,AN Sufang,HOU Jinna   

  1.  (Crop Designing Center,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)
  • Received:2019-05-30 Published:2019-11-15 Online:2019-11-15

摘要: 为解析甘蓝型油菜幼苗期下胚轴长、根长与成熟期主要农艺性状及品质性状的关系,以125份甘蓝型油菜品种(系)为材料,进行了室内和田间试验,并对幼苗期下胚轴长、根长与成熟期主要农艺性状及品质性状进行了相关性分析及灰色关联度分析。结果表明,甘蓝型油菜芥酸含量、硫甙含量变异系数较大,易受外界环境影响,而含油量、株高等变异系数较小,遗传力较高。幼苗期下胚轴长与根长呈极显著正相关,且与幼苗期根长关联度最大的也是幼苗期下胚轴长,幼苗期根长与倒伏级呈显著负相关。幼苗期下胚轴长、根长与主要品质性状均呈正相关,其中下胚轴长与芥酸含量呈显著正相关。可见,苗期根系越发达,成熟期抗倒伏性和品质性状越优良,选育抗倒伏和品质优的甘蓝型油菜时可将幼苗期下胚轴长与根长作为重要的参考指标。

关键词: 甘蓝型油菜, 倒伏, 农艺性状, 品质性状, 根长, 下胚轴长, 相关分析, 灰色关联度分析

Abstract:  In order to dissect the relationship between hypocotyl length,root length at seedling stage and main agronomic traits and quality traits at maturity stage of Brassica napus,125 varieties (lines) of B.na pus were planted indoors and in field for investigating their agricultural traits and quality traits.Correlation and gray relational grade analyses were conducted among various traits.Results showed that the variation coefficients of erucic acid content and glucosinolate content were larger,susceptible to environmental im pact,while the variation coefficients of oil content,plant height were smaller and heritability was higher.The hypocotyl length and the root length at seedling stage was positively correlated with each other. The root length at seedling stage was significantly negative correlated with lodging grade.The length of hypo cotyl and root at seedling stage showed positive correlation with main quality traits and hypocotyl length was positivly correlated with erucic acid content(P<0.05) .All the results indicated that when the roots of the seedlings were more developed,the lodging resistance and quality traits were better at maturity,and the hypocotyl length and root length at seedling stage could be used as important reference indexes for breeding B.napus with lodging resistance and high quality.

Key words: Brassica napus L.;Lodging, Agronomic trait, Quality trait, Root length, Hypocotyl length; Correlation analysis, Gray relational grade analysis

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