湖北农业科学 ›› 2026, Vol. 65 ›› Issue (7): 1-5.doi: 10.14088/j.cnki.issn0439-8114.2026.07.001

• 育种·栽培 •    下一篇

不同基因型油菜对赤霉素调控的差异响应

张莹莹1, 李莓2, 罗丽娅1, 祝培1, 许本波1, 徐劲松1, 张学昆1,2   

  1. 1.长江大学农学院/农业农村部长江中游作物绿色高效生产重点实验室(部省共建)/湿地生态与农业利用教育部工程研究中心,湖北 荆州 434025;
    2.岳麓山实验室/湖南省农业科学院作物研究所,湖南 长沙 410128
  • 收稿日期:2026-03-03 出版日期:2026-07-25 发布日期:2026-07-23
  • 通讯作者: 徐劲松(1983-),男,副教授,博士,主要从事油菜遗传育种研究,(电子信箱)xujinsong@yangtzeu.edu.cn。
  • 作者简介:张莹莹(1999-),女,河南周口人,在读硕士研究生,研究方向为油菜遗传育种,(电子信箱)1287327211@qq.com;张学昆(1968-),男,教授,博士,主要从事油菜遗传育种研究,(电子信箱)zhang.xk@139.com。
  • 基金资助:
    农业生物育种重大项目(2023ZD04042); 湖北省支持种业高质量发展资金项目(HBZY2023B00303)

Differential responses of different genotypes of rapeseed to gibberellin regulation

ZHANG Ying-ying1, LI Mei2, LUO Li-ya1, ZHU Pei1, XU Ben-bo1, XU Jin-song1, ZHANG Xue-kun1,2   

  1. 1. College of Agriculture, Yangtze University/Key Laboratory of Green and Efficient Crop Production in the Middle Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs(Co-established by the Ministry and the Province)/Engineering Research Center of Wetland Ecology and Agricultural Use, Ministry of Education, Jingzhou 434025, Hubei, China;
    2. Yuelushan Laboratory/Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410128, China
  • Received:2026-03-03 Published:2026-07-25 Online:2026-07-23

摘要: 以3种类型12个油菜品种(系)为试验材料,设置40 mg/L烯效唑、50 mg/L多效唑、18.75 mg/L GA3和30 mg/L GA4 4个处理,于油菜发芽后第7天进行喷施,测定苗期和成熟期农艺性状,并考察苗期耐寒性和耐渍性。结果发现,耐渍性的变异系数最大;烯效唑、多效唑处理可显著降低苗高及主根长,显著增加侧根数和叶片叶绿素含量,GA3、GA4处理可显著提高幼苗苗高和主根长,显著抑制侧根数目和叶片叶绿素含量;总体来看,不同基因型油菜苗期农艺性状对烯效唑、多效唑及赤霉素的反应敏感度由强到弱依次为中国半冬性母本×冬性父本、中国半冬性母本×(中国半冬性×欧洲冬性)DH父本、中国半冬性母本×中国半冬性父本。将苗期性状对赤霉素处理的响应值与苗期抗逆性及产量进行逐步回归,结果显示,产量相关性状与苗期性状对赤霉素的响应值不相关,苗期叶绿素含量对GA4处理的响应值与苗期耐寒性密切相关,苗期叶绿素含量对GA3处理的响应值与生育期密切相关,根长及侧根数对多效唑的响应值与耐渍性密切相关。由此可以看出,不同基因型油菜对赤霉素的响应存在显著差异,在生产上可利用赤霉素相关调节剂对不同类型品种苗期进行分类调控,从而精准提高油菜苗期抗逆性。

关键词: 油菜(Brassica napus L.), 基因型, 赤霉素, 产量, 农艺性状, 抗性

Abstract: Twelve rapeseed cultivars(lines) belonging to three types were used as experimental materials. Four treatments were established, including 40 mg/L uniconazole, 50 mg/L paclobutrazol,18.75 mg/L GA3 and 30 mg/L GA4. Spraying was conducted on the 7th day after rapeseed germination. Agronomic traits at the seedling and mature stages were determined, and cold tolerance and waterlogging tolerance of seedlings were evaluated. The results showed that the coefficient of variation for waterlogging tolerance was the highest. Treatments with uniconazole and paclobutrazol significantly reduced seedling height and main root length, and markedly increased lateral root number and leaf chlorophyll content. By contrast, GA3 and GA4 treatments substantially increased seedling height and main root length, but significantly inhibited lateral root number and leaf chlorophyll content. Overall, the sensitivity of seedling agronomic traits of different rapeseed genotypes to uniconazole, paclobutrazol and gibberellins ranked from high to low as: Chinese semi-winter female parent × winter male parent, Chinese semi-winter female parent × (Chinese semi-winter × European winter) DH male parent, and Chinese semi-winter female parent × Chinese semi-winter male parent. Stepwise regression analysis was performed between the response values of seedling traits to gibberellin treatments and seedling stress resistance as well as yield. The results indicated that yield-related traits had no correlation with the response values of seedling traits to gibberellins. The response value of seedling chlorophyll content to GA4 was closely associated with seedling cold tolerance, and the response value of seedling chlorophyll content to GA3 was significantly correlated with growth period. Additionally, the response values of root length and lateral root number to paclobutrazol were strongly related to waterlogging tolerance. In conclusion, rapeseed genotypes presented distinct differences in response to gibberellins. In practical production, gibberellin-related plant growth regulators could be adopted for classified regulation of seedlings of different rapeseed cultivars, so as to precisely improve the stress resistance of rapeseed seedlings.

Key words: rape (Brassica napus L.), genotypes, gibberellin, yield, agronomic traits, resistance

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