中国农业科技导报2024，Vol.26Issue(1)：40-51,12.DOI:10.13304/j.nykjdb.2022.0343
棉花海陆回交群体盛铃期的光合特性及其生理基础
Photosynthetic and Physiological Characteristics of Gossypium hirsutum L.×Gossypium barbadense L.Backross Populations in Full Boll Stage
摘要
Abstract
In order to explore the photosynthetic characteristics and physiological basis of G.hirsutum×G.barbadense backcross cotton in the full boll stage,and to screen out light-efficiency germplasm resources in the progeny of island-upland hybrid cotton,taking upland cotton'Line 9'as the female parent and sea island cotton'Xinhai 16'as the male parent,the BC4F2:4 population consisting of 115 lines was constructed as the research object,and the photosynthetic and physiological traits under field conditions were measured to evaluate the breeding potential of progeny lines with the method of descriptive statistical,correlation,regression,principal component and cluster analyses.The results showed that 15 photosynthetic physiological traits had rich variation,with a coefficient of variation ranging from 8.96%to 51.09%,among which 9 traits with coefficients of variation of 20%or more including net photosynthesis rate,transpiration rate,water-use efficiency,intercellular CO2 concentration,stomatal conductance,water vapor pressure deficit,malondialdehyde,soluble protein,and superoxide dismutase.Correlation analysis revealed that there was not only a significant internal correlation,but also a significant correlation between photosynthetic and physiological indicators,and soil and plant analyzer develotrnent(SPAD)significantly correlated with all 14 traits.Multiple stepwise regression analysis constructed the optimal regression equations for 10 photosynthetic physiological traits.By principal component analysis,5 principal components were extracted and the cumulative contribution rate reached to 78.608%.Principal component 1(PC1)and PC4 were the effective basis for explaining the physiological indicators of the group,PC2,PC3 and PC5 were the effective basis for explaining group photosynthetic traits.The Ward.D hierarchical clustering method divided the population into 4 categories and the percentage of the groupⅠ、groupⅡ、group Ⅲ and group Ⅳ to the total materials were 33.91%,10.43%,29.57%and 26.09%,and the 30 materials of the group Ⅳ had good comprehensive traits cotton,which could be used as high light-efficiency lines suitable for breeding needs.The results of the study provided a theoretical basis and material support for high light-efficiency breeding of cotton.关键词
海陆杂交棉/光合生理特性/回归分析/主成分分析/聚类分析Key words
island-upland hybrid cotton/photosynthetic physiological characteristics/regression analysis/principal component analysis/cluster analysis分类
农业科技引用本文复制引用
李生梅,庞博,耿世伟,宋武,李红梅,马茂森,张茹,王新燕,高文伟..棉花海陆回交群体盛铃期的光合特性及其生理基础[J].中国农业科技导报,2024,26(1):40-51,12.基金项目
国家重点研发计划项目(2021YFD1900802-4) （2021YFD1900802-4）
新疆农业大学校级大学生创新训练计划项目(dxscx2020014) （dxscx2020014）
2023年度新疆农业职业技术学院资助课题项目(XJNZYKJ202302). （XJNZYKJ202302）
