浙江农业学报 ›› 2025, Vol. 37 ›› Issue (2): 288-299.DOI: 10.3969/j.issn.1004-1524.20240151

• 园艺科学 • 上一篇    下一篇

基于叶绿素荧光参数的苗用型大白菜耐热性综合评价体系

谈静如1,2(), 胡齐赞2, 岳智臣2, 陶鹏2, 雷娟利2, 李必元2, 赵彦婷2,*(), 臧运祥1,*()   

  1. 1.浙江农林大学 园艺科学学院,浙江 杭州 311300
    2.浙江省农业科学院 蔬菜研究所, 浙江 杭州 310021
  • 收稿日期:2024-02-22 出版日期:2025-02-25 发布日期:2025-03-20
  • 作者简介:赵彦婷,E-mail:zhaoyt@zaas.ac.cn
    臧运祥,E-mail:yxzang@zafu.edu.cn;
    谈静如(1997—),女,浙江杭州人,本科生,研究方向为大白菜耐热性鉴定与机理。E-mail:1399501017@qq.com
  • 通讯作者: 赵彦婷,臧运祥
  • 基金资助:
    浙江省“领雁”研发攻关计划项目(2022C02030);浙江省农业新品种选育重大科技专项(2021C02065-5-2)

Comprehensive evaluation system for heat tolerance of seedling-edible Chinese cabbage (Brassica rapa L. ssp.) based on chlorophyll fluorescence parameters

TAN Jingru1,2(), HU Qizan2, YUE Zhichen2, TAO Peng2, LEI Juanli2, LI Biyuan2, ZHAO Yanting2,*(), ZANG Yunxiang1,*()   

  1. 1. College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, China
    2. Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2024-02-22 Online:2025-02-25 Published:2025-03-20
  • Contact: ZHAO Yanting,ZANG Yunxiang

摘要:

基于抗氧化酶活性,以及可溶性糖、丙二醛、脯氨酸含量等生理指标建立的大白菜耐热性评价方程在应用中存在操作复杂、费时费力等问题,亟需建立简便快捷的大白菜耐热性综合评价方法。本研究以33份大白菜种质资源为材料,通过40 ℃处理20 h模拟高温胁迫,测定高温处理后大白菜的叶绿素荧光参数[PSⅡ最大光化学量子产量(Fv/Fm)、初始荧光(Fo)、暗适应后最大荧光产量(Fm)、PSⅡ有效光化学量子产量(Fq'/Fm')、电子传递速率(ETR)、光下最大荧光产量(Fm')、非光化学猝灭系数(NPQ)、叶绿素指数(Chlidx)、总叶绿素含量(Chl)],以及鲜重(FW)和电导率(REC)共11个指标,采用主成分分析和隶属函数分析方法对供试大白菜种质进行耐热性综合评价。结果表明,这2种综合评价方法获得的结果一致,且与高温下白菜的耐热表型结果吻合。最后,通过逐步回归分析建立了基于叶绿素荧光参数的大白菜耐热性综合评价的回归方程,D4=0.464VETR+0.226VChlidx+0.262VChl+0.191VNPQ+0.192Fm'+0.127mFW。该研究建立了一套简便快捷、方便测量的大白菜耐热性综合评价体系,研究结果可为后续大白菜耐热种质筛选、耐热种质选育与耐热机理挖掘提供技术支撑。

关键词: 大白菜, 高温, 叶绿素荧光参数, 主成分分析, 隶属函数分析, 耐热性

Abstract:

The heat tolerance evaluation equations for Chinese cabbage (Brassica rapa L. ssp.) based on antioxidant enzyme activities and physiological indicators such as contents of soluble sugars, malondialdehyde, proline, etc. are complicated, time-consuming and labor-intensive, thus a simple and rapid comprehensive evaluation method need to be established. In the present study, 33 Chinese cabbage germplasm resources were used as materials, treated at 40 ℃ for 20 h, and 11 indexes such as chlorophyll fluorescence parameters [optimal/maximal quantum yield of PSⅡ (Fv/Fm), minimal fluorescence (Fo), maximal fluorescence (Fm), PSII efficiency coefficient (Fq'/Fm'), electron transport rate(ETR), light-adapted maximum fluorescence (Fm'), non-photochemical quenching (NPQ), chlorophyll index (Chlidx), total chlorophyll content (Chl)] as well as fresh weight (FW) and relative electrical conductivity (REC) were measured after the high-temperature treatment. The principal component analysis and the membership function analysis were used to evaluate the heat tolerance of the tested Chinese cabbage species. The results obtained by the two comprehensive evaluation methods were consistent, and were consistent with the results of heat tolerance phenotype of Chinese cabbage under high temperature. Finally, the regression equation D4=0.464VETR+0.226VChlidx+0.262VChl+0.191VNPQ+0.192Fm'+0.127mFW for the comprehensive evaluation of heat tolerance of Chinese cabbage based on the chlorophyll fluorescence parameters was established through the stepwise regression analysis. Through the above research, a comprehensive evaluation system for heat tolerance of Chinese cabbage that is simple, fast and convenient for measurement has been established. The research results provide technical support for the subsequent screening of heat-tolerant germplasm, breeding of heat-tolerant germplasm and exploration of heat tolerance mechanisms of Chinese cabbage.

Key words: Brassica rapa L. ssp., high temperature, principal component analysis, membership function analysis, chlorophyll fluorescence parameter, heat tolerance

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