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甘蔗不同品种(种)对干旱的生理反应
引用本文:钟希琼,叶振邦.甘蔗不同品种(种)对干旱的生理反应[J].华南农业大学学报,1993,14(4):138-144.
作者姓名:钟希琼  叶振邦
作者单位:华南农业大学农学系 (钟希琼),华南农业大学农学系(叶振邦)
摘    要:研究了7-10个甘蔗品种(种)对干旱胁迫的生理反应,抗旱品种(种)有较大的伤流强度和较高的切叶自然失水速度,用聚乙二醇(PEG600)处理叶圆片,在这种水分胁迫下细胞膜透品种(种)比不抗旱的累积量要大。干旱使叶片细胞束缚水含量增加,抗旱力强的品种(种)较抗旱力弱的含量高。受旱后甘蔗淀粉酶活性的变化与品种(种)抗旱力的关系不很明确。

关 键 词:甘蔗  干旱  品种  生理反应

PHYSIOLOGICAL ROSPONRES TO WATER STRESS IN SUGARCANE SPECIES AND VARIETIES
Zhong Xiqiong Ye Zhenbang.PHYSIOLOGICAL ROSPONRES TO WATER STRESS IN SUGARCANE SPECIES AND VARIETIES[J].Journal of South China Agricultural University,1993,14(4):138-144.
Authors:Zhong Xiqiong Ye Zhenbang
Abstract:Studies on the physiological response to water stress in 7-10 varieties (species)of sugarcane were carried out . Drought-resistant varieties (species)had a higher rate of bleeding and higher rate of water losing in detached leaves. The Plasmalemma permeability was increased under the water stress induced by PEG. The permeability was smallerr in drought - resistant varieties (species). Under soil drought stress conditions, drought - resistant varieties (species) accumulated comparatively higher free proline content than those in the less drought - resistant varieties. Cellular bound water content was increased and higher content of cellular bound water was found in drought - resistant varieties (species). The correlation between the change of amylase activity and drought resistance was not verv definite.
Keywords:Sugarcane  Water stress  Plastnalemma permeability  Free proline  Bound water:Amy-lase
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