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中国油料作物学报 ›› 2023, Vol. 45 ›› Issue (1): 56-62.doi: 10.19802/j.issn.1007-9084.2022087

• 种质资源·遗传育种 • 上一篇    下一篇

甘蓝型油菜自然群体苗期磷效率分析及磷高效优异种质筛选

陈燕玲1,2(), 王宁1, 石磊2()   

  1. 1.平凉市农产品质量安全与检验检测中心,甘肃 平凉,744000
    2.华中农业大学作物遗传改良国家重点实验室,湖北 武汉,430070
  • 收稿日期:2022-03-29 出版日期:2023-02-25 发布日期:2023-03-03
  • 通讯作者: 石磊 E-mail:1746963465@qq.com;leish@mail.hzau.edu.cn
  • 作者简介:陈燕玲(1988- ),女,硕士研究生,研究方向为植物营养遗传,E-mail: 1746963465@qq.com
  • 基金资助:
    国家自然科学基金(32172662)

Analysis of phosphorus efficiency and screening of P-efficient germplasm on natural population of oilseed rape (Brassica napus) at seedling stage

Yan-ling CHEN1,2(), Ning WANG1, Lei SHI2()   

  1. 1.Pingliang Agricultural Products Quality Safety Inspection and Testing Center, Pingliang 744000, China
    2.National Key Lab of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
  • Received:2022-03-29 Online:2023-02-25 Published:2023-03-03
  • Contact: Lei SHI E-mail:1746963465@qq.com;leish@mail.hzau.edu.cn

摘要:

为了筛选磷高效优异种质,研究油菜磷高效遗传,以甘蓝型油菜自然群体400个品种为试验材料,通过营养液培养方法进行了两轮苗期磷效率评估(分别命名为试验Ⅰ和试验Ⅱ)。该群体在低磷和正常磷处理下地上部干重、根系干重、根冠比、主根长和磷效率系数均呈现正态分布特征,品种间存在较大的基因型变异。以低磷处理地上部干重和磷效率系数为筛选指标,在试验Ⅰ中分别筛选出磷高效和低效候选品种各17份和13份,在试验Ⅱ中分别筛选出磷高效和低效候选品种各17份和18份。结合试验Ⅰ和Ⅱ,确定苗期磷高效候选品种32份,磷低效候选品种31份,可用以开展后续研究。

关键词: 甘蓝型油菜, 磷, 磷效率, 种质筛选

Abstract:

Screening of phosphorus (P)-efficient germplasm of oilseed rape (Brassica napus L.) will provide elite materials for P heredity and P-efficient breeding. In this study, 400 varieties of natural population of oilseed rape (B. napus) was used to evaluate P efficiency at seedling stage under 2 experiments by hydroponic culture, named EXP. Ⅰ and EXP. Ⅱ, respectively. Under normal P and low P conditions, RDW (root dry weight), SDW (shoot dry weight), RSR (root : shoot ratio), PRL (primary root length) and PEC (phosphorus efficiency coefficient) of the natural population showed normal distribution, indicating that there existed abundant genetic variation in the natural population. P efficiency of the natural population of B. napus at the seedling stage was determined by the parameter of SDWLP and PEC. Among them, 17 P-efficient and 13 P-inefficient candidate varieties were obtained in EXP. Ⅰ, while 17 P-efficient and 18 P-inefficient candidate varieties were obtained in EXP. Ⅱ. Based on the 2 experiments, totally 32 P-efficient and 31 P-inefficient candidate varieties were identified for further work.

Key words: Brassica napus, phosphorus, phosphorus efficiency, germplasm screening

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