饲料研究2023，Vol.46Issue(22)：137-140,4.DOI:10.13557/j.cnki.issn1002-2813.2023.22.025
晚秋低温对苜蓿叶片光合特性的影响
Effect of low temperatures on photosynthetic characteristics of Medicago sativa leaves in late autumn
摘要
Abstract
The study aimed to explore the changes of the photosynthetic performance of Medicago sativa leaves in late autumn by screening alfalfa germplasm materials suitable for planting in Heilongjiang Province.Six Medicago sativa varieties were used as experimental materials.Photosynthetic indexes,including leaf water vapor pressure,stomatal conductance,net photosynthetic rate,transpiration rate and intercellular CO2 concentration,were measured.Excellent Medicago sativa varieties were selected by a membership function evaluation.The results showed that the net photosynthetic rate and water use efficiency of Longmu 801 were the highest.The stomatal conductance and intercellular CO2 concentration of Caoyuan No.3 were the highest.The transpiration rate of Caoyuan No.3 and Longmu 801 was significantly higher than that of other varieties(P<0.05).The leaf water vapor pressure of Caoyuan No.3,Longmu 801 and Queen was significantly higher than that of other varieties(P<0.05).Membership functions were used to evaluate the photosynthetic performance of varieties.The photosynthetic performance of Medicago sativa varieties,ranked from high to low,was as follows:Longmu 801>Caoyuan No.3>Queen>Concept>Adrenalin>Sardi.The study indicates that Longmu 801 and Caoyuan No.3 have strong photosynthetic performance and were suitable for planting in Heilongjiang.关键词
苜蓿/光合特性/低温/相关性评价Key words
Medicago sativa/photosynthetic characteristics/low temperature/correlation evaluation分类
农业科技引用本文复制引用
王晓龙,杨曌,徐艳霞,柴华,李莎莎,吴玥,王建丽,钟鹏..晚秋低温对苜蓿叶片光合特性的影响[J].饲料研究,2023,46(22):137-140,4.基金项目
黑龙江省自然科学基金资助项目(项目编号:YQ2022C033) （项目编号:YQ2022C033）
黑龙江省科研院所科研业务费项目(项目编号:CZKYF2021-2-B025) （项目编号:CZKYF2021-2-B025）
齐齐哈尔市科技计划创新激励项目(项目编号:CNYGG-2021009) （项目编号:CNYGG-2021009）
黑龙江西北部抗寒耐干旱苜蓿新品种设计与培育项目(项目编号:2022ZD040120402) （项目编号:2022ZD040120402）
