不同烟草种质材料在水分胁迫下的生理反应  

Physiological Responses of Different Flue-cured Tobacco Germplasm Under Water Stress

作　　者：谭春燕[1] 钱晓刚[1] 韩晓红[2] 孙芳[1] 孙兵[1] 徐友凤[1] 宋雪[1] 

机构地区：[1]贵州大学农学院,贵阳550025 [2]贵州省烟草科学研究所,贵阳550001

出　　处：《种子》2010年第6期33-35,共3页Seed

基　　金：贵州省烟草专卖局科技项目"贵州省自育烟草品种(系)抗旱性能评价与鉴定"

摘　　要：采用盆栽控水试验,初步研究了在水分胁迫下烟草的生理反应及其与抗旱性的关系。结果表明,烟草各生理指标对水分胁迫反应灵敏。在水分胁迫下光合速率下降26.6%-81.1%,蒸腾速率和气孔导度下降23.3%-69.4%,27%-78.7%,胞间CO2浓度上升5.4%-62.8%。试验在水分胁迫下测定了11个烟草种质材料的相关生理指标,由此可划分出不同抗旱性能的材料。This paper preliminarily studied the physiological responses of tobacco and its relationship with drought-resistance under water stress conditions by pot experiment.The results showed that the physiological indexi of tobacco were sensitive to water stress.Photosynthetic rate dropped 26.6% to 81.1%,transpiration rate and stomatal conductance decreased 23.3% to 69.4%,27% to 78.7%,and intercellular CO_2 concentration rose 5.4% to 62.8% under water stress condition.

关 键 词：烟草种质材料 水分胁迫 生理反应 

分 类 号：S572[农业科学—烟草工业]