普通白菜苗期耐热性鉴定方法研究  

Studies on Heat Tolerance Identification Method for Non-heading Chinese Cabbage〔Brassica campestris L.ssp.chinensis（L.）Makinovar.communis Tsen et Lee〕

作　　者：胡俏强[1,2] 陈龙正[2] 张永吉[1,2] 徐海[2] 宋波[2] 苏小俊[2] 袁希汉[2] 

机构地区：[1]南京农业大学作物遗传与种质创新国家重点实验室,江苏南京210095 [2]江苏省农业科学院蔬菜研究所,江苏南京210014

出　　处：《中国蔬菜》2011年第2期56-61,共6页China Vegetables

基　　金：江苏省自主创新基金(cx(09)604);国家"863"计划(2008AA10Z150);农业部公益性行业(农业)科研专项经费项目(nyhyzx07-007)

摘　　要：采用人工气候箱高温处理方法,分别于春、秋和夏季,在6种不同的高温条件下对10份普通白菜材料进行连续7d的高温处理研究其耐热性。结果表明,在不同的高温胁迫下,各供试材料均会出现不同程度的热害症状,如叶片反卷、失绿等,并随着温度的升高和处理时间的延长,热害症状加剧。以春季和秋季采用37℃/27℃(昼/夜)处理幼苗4d后调查其热害指数,可以显著反映出普通白菜各品种间的耐热性差异。而夏季采用自然温度育苗后在37℃/27℃(昼/夜)下不能显著区分普通白菜各品种间耐热性差异。Ten non-heading Chinese cabbages〔Brassica campestris L.ssp.chinensis（L.）Makino var.communis Tsen et Lee〕materials were continuously treated with 6 different high temperatures for 7 days in artificial climate box in spring,autumn and summer,in order to identified their heat tolerance.The results indicated that under different heat stress,different degrees heat injure symptoms such as leaf back-scrolling,chlorosis,appeared in all tested materials,and these symptoms became severe along with temperature increasing and treatment time prolonging.The heat injure symptoms could be intensified.The heat injury index at seedling stage by heat treatment of 37 ℃/27 ℃（d/n）for 4 days in spring and autumn could significantly reflect the differences in heat tolerance of different non-heading Chinese cabbage varieties.While in summer,culturing seedling with nature temperature under 37 ℃/27 ℃（d/n）could not significantly distinguish the differences in heat tolerance of different non-heading Chinese cabbage varieties.

关 键 词：普通白菜 耐热性 鉴定 热害指数 

分 类 号：S634.3[农业科学—蔬菜学]