| 百合新种质苗期耐热性比较 |
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| 引用本文： | 程千钉,刘桂芳,杨利平.百合新种质苗期耐热性比较[J].河北农业大学学报,2012(5):34-39. |
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| 作者姓名： | 程千钉 刘桂芳 杨利平 |
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| 作者单位： | 长江师范学院生命科学与技术学院;河北农业大学园艺学院;长江师范学院档案馆 |
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| 基金项目： | 重庆市自然科学基金(CSTC,2011BB1001);重庆市涪陵区科技项目(FLKJ,2012BB1086);长江师范学院科研启动基金 |
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| 摘 要： | 以鉴定为真杂种的3个远缘杂交新种质‘Snow Queen’×条叶百合、‘Snow Queen’×川百合和‘SnowQueen’×细叶百合及其亲本组培苗为材料,对其进行梯度温度处理(25、28、31、34、37、40℃),测定不同处理下幼苗叶片游离脯氨酸含量、可溶性蛋白含量、SOD活性、叶绿素荧光参数以及根系活力等抗性生理指标的变化。结果表明:31℃处理下幼苗表现出一定的耐热性,37℃幼苗受到自身难以调节恢复的严重热害;3个杂交种质耐热性均优于母本,表现出一定的杂种优势;3个杂交种质相比,‘Snow Queen’×川百合耐热性强,‘Snow Queen’×条叶百合次之,‘Snow Queen’×细叶百合最弱。
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| 关 键 词： | 百合 杂交种 耐热性 种质 |
Heat tolerance comparison of new hybrid species of Lilium at seedling stage |
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| CHENG Qian-ding,LIU Gui-fang,YANG Li-ping.Heat tolerance comparison of new hybrid species of Lilium at seedling stage[J].Journal of Agricultural University of Hebei,2012(5):34-39. |
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| Authors: | CHENG Qian-ding LIU Gui-fang YANG Li-ping |
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| Institution: | 1(1.College of Life Science and Technology,Yangtze Normal University,Chongqing 408100,China; 2.Archives of Yangtze Normal University,Chongqing 408100,China;3.College of Horticulture, Agricultural University of Hebei,Baoding 071000,China) |
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| Abstract: | Seedlings of three new hybrid species of Lilium('Snow Queen' × Lilium callosum,'Snow Queen' × L.davidii and 'Snow Queen' × L.pumilum) and their parents were treated in chambers at different temperatures of 25,28,31,34,37 and 40 ℃,and their changes of physiological resistance indexes such as proline content,soluble protein content,SOD activity,chlorophyⅡ fluorescence parameters and root activity were determined.The results showed that all the seedlings appeared heat tolerance at 31 ℃,but were badly hurt at 37 ℃.The heat tolerance of the three species were better than their female parents,which showed heterosis in a certain extent.There were some differences of heat tolerance among the three species.The ranks in heat tolerance of the three were 'Snow Queen' × L.davidii,'Snow Queen' × L.callosum,and 'Snow Queen' × L.pumilum. |
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| Keywords: | lily(Lilium) hybridization heat-tolerance germplasm |
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