黄瓜嫁接苗对不同低温胁迫的反应  

RESPONSE OF GRAFTED CUCUMBER SEEDLINGS TO DIFFERENT LOW TEMPERATURE STRESS TREATMENTS

作　　者：于贤昌[1] 邢禹贤[1] 马红[1] 魏珉[1] 冯炘[1] 

机构地区：[1]山东农业大学园艺系,泰安271018

出　　处：《上海农业学报》1999年第1期47-50,共4页Acta Agriculturae Shanghai

摘　　要：以黄瓜自根苗为对照，研究了以黑籽南瓜（Ｃｕｃｕｒｂｉｔａ　ｆｉｃｉｆｏｌｉａ）为砧木的长春密刺黄瓜嫁接苗对１℃、３℃、５℃、７℃和９℃分别胁迫１ｄ、２ｄ、３ｄ、４ｄ和５ｄ的形态和生理反应。结果表明，黄瓜嫁接苗能够忍耐１℃２ｄ、３℃３ｄ和５℃５ｄ的低温胁迫；而自根苗仅能忍耐３℃１ｄ和５℃３ｄ的低温胁迫，１℃１ｄ幼苗死亡。嫁接苗在低温胁迫下只要不表现出受害症状，在自然状况下恢复３ｄ后，光合功能不表现降低；而自根苗在同等条件下，光合功能则显著降低。Physiological response of cucumber seedlings grafted on figleaf gourd (Cucurbita ficifolia) to different low temperature stress treatments at 1℃, 3℃, 5℃, 7℃ and 9℃ for1d, 2d, 3d,4d and 5d respectively and the own-root cucumber seedlings were used as control. The main results are as follows: the grafted cucumber seedlings can tolerate the lowtemperature stress at 1℃ for 2 d, 3℃for 3 d and 5℃ for 5d,respectively. However,the ownroot cucumber seedlings can tolerate the low temperature stress only at 3℃ for 1 d and 5℃for 3 d,respectively;and the seedlings die at 1℃ for 1 d. If the grafted cucumber seedlingsdon't express the chilling injury under the low temperature stress,the photosynthetic function of the seedlings at the 3 d recovery under the natural conditions after stress will not reduce. But the phototsynthetic function of the own-root seedlings will reduce markedly underthe same conditions.

关 键 词：黄瓜 嫁接苗 低温胁迫 

分 类 号：S642.201[农业科学—蔬菜学]