高温胁迫对黄瓜幼苗生长的影响  

Influence of High Temperature Stress on Growth in Cucumber Seedlings

作　　者：李建建[1] 徐晓昀[2] 聂书明[2] 李河[1] 

机构地区：[1]红河学院理学院,云南蒙自661100 [2]甘肃农业大学园艺系,兰州730070

出　　处：《红河学院学报》2007年第5期10-13,共4页Journal of Honghe University

基　　金：红河学院博士;硕士科研项目(XSS06019)

摘　　要：以津春4号(耐热)与中农12号(热敏感)黄瓜幼苗为试材,研究了其在不同程度高温胁迫下的生长指标变化。结果表明:35℃/20℃(d/n)高温处理下植株有一定程度的徒长现象,而茎粗、冠鲜重与冠干重、根鲜重与根干重增加均受到抑制;42℃/27℃(d/n)处理下各项生长指标均受到明显抑制。品种间相比,耐热品种津春4号在同等条件下受到的抑制程度小于热敏感品种中农12号。The effects of different high temperature stress on growth mclex m cucumoer seedlings （Cucumis sauvus L. ）were studied. The results indicated that some expansive growth phenomena occurred in two type plant at 35℃/ 20℃ （d/n） stress temperature, while the increases of stem diameter , fresh weight, dry weight of top and root are inhibited. At the same time,the inhibiting degrees are more obvious at 42℃/27℃ （d/n） stress temperature. What＇s more, the inhibiting intensity is not the same in two cucumbers, and that in Jinchun No. 4 is less than Zhongnong No. 12 at the same conditions.

关 键 词：高温胁迫 黄瓜幼苗 生长指标 根冠比 

分 类 号：Q945.3[生物学—植物学]