摘要
芹菜、菜豆和辣椒3种蔬菜作物。取其抗热性有明显差异的品种各1或2对为材料，研究高温对蒸腾、种子活力及前动种子ATP水平的影响。结果表明，高温胁迫下3种蔬菜的蒸腾强度升高，1天中变化加剧，且抗热品种更为明显；种子活力和ATP水平受热胁迫而下降，其下降率抗热品种均低于相应的热敏型品种。初步认为，高温下上述3项指标的变化幅度可望作为作物抗热性的鉴定指标。
Pairs of cultivars of celery (Apium graveolens), common bean (Phaseolus vulgaris L. ) and hot pepper (Capsicum annuum L. ) which are different in heat resistance were investigated to know effects of high temperature stress on transpiration, seed vigor and adenosine triphosphat(ATP) level in Germinated seeds as well as the different response of tested cultivars. The results indicated that the increasing of transpiration rate in heat-resistant cultivars were much higher than that in heat-susceptible ones under high temperature stress. Seed vigor and ATP level were both decresed after heat-stress treatment. However, the decresing rate of heat-resistant cultivars were less than that of susceptible ones. Thus, there is a possibillty of using the changes in transpiration rate, seed vigor and ATP level as the indicators of assessing the heat resistance of various cultivars in vegetable crops.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
1999年第5期98-102,共5页
Journal of China Agricultural University
基金
国家自然科学基金!39470499
