当前位置: 首页 > 文章 > 甜瓜属种间杂交新种及其后代对低温的适应性反应 南京农业大学学报 2002,25 (2) 27-30
Position: Home > Articles > Responses of seedlings of Cucumis ×hytivus and progenies to low temperature Journal of Nanjing Agricultural University 2002,25 (2) 27-30

甜瓜属种间杂交新种及其后代对低温的适应性反应

作  者:
庄飞云;陈劲枫;钱春桃;李式军;任刚;王志军
单  位:
南京农业大学作物遗传与种质创新国家重点实验室;南京农业大学作物遗传与种质创新
关键词:
甜瓜属;种间杂种;低温
摘  要:
研究了甜瓜属种间杂交新种 (Cucumis×hytivusChen&Kirkbride ,2n =38)及其后代幼苗对低温逆境的适应能力。结果表明 :可能由于亲本染色体组间的功能不协调 ,在低温处理下新种幼苗出现代谢异常 ,丙二醛 (MDA)、脯氨酸含量变化大 ,冷害指数达到 3 5 ,表现对低温的适应性相对较弱。但新种与黄瓜的回交自交后代却表现出较强的抗性 ,超出了参试黄瓜品种。经 4d变温处理后 ,其冷害指数仅为 1 0 ,MDA含量为 9 2 μmol·g-1,在所有供试材料中为最低。这表明通过回交和自交 ,杂种代谢系统已基本恢复正常 ,具有进一步研究和应用的价值。
译  名:
Responses of seedlings of Cucumis ×hytivus and progenies to low temperature
作  者:
ZHUANG Fei yun,CHEN Jin feng *,QIAN Chun tao,LI Shi jun,REN Gang,WANG Zhi jun (National Key Laboratory of Plant Genetics and Germplasm Enhancement,Vegetable Research Institute,Nanjing Agric Univ,Nanjing 210095,China)
关键词:
Cucumis;interspecific hybrid;low temperature
摘  要:
The responses of seedlings of the new species Cucumis ×hytivus and its progenies from backcross with cucumber to chilling injury were investigated.The abnormal metabolism observed in C.hytivus as it subjected to low temperature treatment.Under chilling treatment,the content of malondialdehyde(MDA)and proline increased dramatically,and the chilling injury index was 3 5,the highest among the tested materials.The unharmonization between parental chromosomes is hypothesized to explain this phenomenon.Nevertheless,the progenies from back-crossing the new species to cucumber(C.sativus)showed much higher tolerant to chilling injury than the tested cucumbers.The cold injury index was 1 0,and the content of MDA was 9 2 μmol·g -1 for 4d treatment,the lowest among all tested materials.This indicated that the metabolism was recovered in the improved cucumber germplasm through back crossing and self pollination.

相似文章

计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊