作物学报2018，Vol.44Issue(7)：1086-1094,9.DOI:10.3724/SP.J.1006.2018.01086
马铃薯冠气温差变化特性与耐旱性的关系
Relationship between Potato Canopy-air Temperature Difference and Drought Tolerance
摘要
Abstract
The canopy-air temperature difference can reflect the physiological adaptability of plants under drought stress. In this study, drought tolerant varieties Jizhangshu 8 and Longshu 10, drought sensitive varieties Atlantic and Shepody, and ten potato clones with different drought tolerance levels from Peru International Potato Center were used to measure plant phenotypic traits (plant height, leaf area, leaf fresh weight, normalized difference vegetation index), photosynthetic indexes (photosynthetic rate, stomatal conduc-tance, transpiration rate, chlorophyll content) and the canopy-air temperature difference, and evaluated the drought tolerance under semi-arid and semi-humid environments. The canopy-air temperature difference, transpiration rate and stomatal conductance were most sensitive to drought stress. The canopy-air temperature difference was significantly different among different potato varieties (clones) under semi-arid and semi-humid environments. The drought tolerance coefficient of canopy-air temperature difference showed significantly positive correlations with drought tolerance coefficients of plant phenotypic characters and photosynthetic in-dexes. The canopy-air temperature difference is an effective indicator to evaluate potato drought tolerance by using infrared ther-mometers, which could provide a theoretical basis for the research of potato drought tolerance breeding.关键词
马铃薯/冠气温差/光合生理特性/耐旱性Key words
potato/canopy-air temperature difference/photosynthetic physiology characteristics/drought tolerance coefficient引用本文复制引用
余斌,杨宏羽,王丽,刘玉汇,白江平,张峰,王蒂,张俊莲..马铃薯冠气温差变化特性与耐旱性的关系[J].作物学报,2018,44(7):1086-1094,9.基金项目
本研究由国家国际科技合作与交流专项(2014DFG31570), 国家现代农业产业技术体系建设专项(CARS-09-P14), 甘肃农业大学甘肃省干旱生境作物学重点实验室开放基金项目(GSCS-2016-09)和甘肃省高等学校科研项目(2015A-068, GSKYYWF2014-1)资助.This study was supported by the International Science & Technology Cooperation Program of China (2014DFG31570), the China Agriculture Research System (CARS-09-P14), the Research Program Sponsored by Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University (GSCS-2016-09), and Gansu Scientific Research Foundation for the Higher Education Institutions (2015A-068, GSKYYWF2014-1). （2014DFG31570）
