华北农学报

所属专题: 栽培生理

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菜心高温半致死温度与耐热适应性

李光光1, 张华1, 黄红弟1, 张财顺2   

  1. 1. 广州市农业科学研究院, 广东 广州 510308;
    2. 华南农业大学园艺学院, 广东 广州 510308
  • 收稿日期:2012-08-10 出版日期:2012-12-31
  • 作者简介:李光光(1982 - ), 男, 湖北襄阳人, 硕士, 主要从事菜心育种研究。
  • 基金资助:
    广东省特色蔬菜现代产业技术体系、广州市农业局招标项目(GZCQC1002FG08015)

The LT50 and Heat Tolerance Adaptability of Flowering Chinese Cabbage in High Temperature

LI Guang-guang1, ZHANG Hua1, HUANG Hong-di1, ZHANG Cai-shun2   

  1. 1. Guangzhou Institute of Agricultural Science,Guangzhou 510308,China;
    2. Biotechnology Institute of Horticulture College,South China Agricultural University,Vegetables Department of Horticulture College,South China Agricultural University,Guangzhou 510642,China
  • Received:2012-08-10 Published:2012-12-31

摘要: 以6份菜心为材料,研究半致死温度(LT50)和田间高温下播种成活率与菜心耐热性的关系。利用SAS和EXE分析两者的相关性。结果表明,在不同的高温中,菜心的LT50呈"S"型上升,LT50值在46~49℃之间。6个菜心材料耐热性从强到弱的顺序依次为:四九-19号菜心>;四九黄菜心>;油绿50天菜心>;501菜心>;油绿菜心701>;特青迟心4号,该结果与田间高温下菜心播种成活率成显著正相关,可以作为菜心耐热性评价的指标。

关键词: 菜心, 耐热性, 相对电导率, 半致死温度

Abstract: Heat tolerance of 6 flowering Chinese cabbage cultivars were measured by semilethal temperature( LT50) and the survival rate of seeded during high stress in field, and the correlation between those databases according to SAS and EXE software. The results showed that all cultivars increased following an S-curve in differenthigh stress temperature. The LT50 was between 46℃ and 49℃ . The heat tolerance of 6 cultivars decreased in the order of sijiu-19caixin, sijiu huang caixin, youlv 50 tian caixin, youlv 501 caixin, youlv 701 caixin, teqing chixin 4.The result was Significant positive correlation with the survival rate of seeded during high stress in field ahd it couldbe used as flowering Chinese cabbage heat resistance evaluation index.

Key words: Flowering Chinese cabbage, Heat tolerance, Relative electric conductivity, Semi-lethal temperature (LT50)

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引用本文

LI Guang-guang, ZHANG Hua, HUANG Hong-di, ZHANG Cai-shun. The LT50 and Heat Tolerance Adaptability of Flowering Chinese Cabbage in High Temperature[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.3969/j.issn.1000-7091.2012.z1.040.