沈阳农业大学学报2025，Vol.56Issue(3)：14-22,9.DOI:10.3969/j.issn.1000-1700.2025.03.002
大豆种质鼓粒期源库关系及籽粒皱缩性鉴定指标筛选
Source-sink Relationship of Soybean Germplasm at Bulging Stage and Screening of Identification Indexes of Grain Wrinkles
摘要
Abstract
[Objective]The bulging stage is a critical period for grain formation and filling of soybean germplasm.The co-ordination of source-sink relationships directly affects the rate and fullness of seed filling.The study of the relationship between source-sink relationship and grain wrinkling at the bulging stage of soybean germplasm can help to reveal the physiological mechanism of wrinkling grain formation,so to provide breeders with more precise breeding goals and strategies.[Methods]355 soybean germplasm from different sources were used as test materials,and indicators such as source-sink relationship at grain filling stage and seed wrinkling at maturity were determined.[Results]355 soybean germplasm could be classified into 5 grades of wrinkling,namely grade 0(9),grade 3(321),grade 5(3),grade 7(21)and grade 9(1),and the higher the grade,the more serious the wrinkling of the seeds.The correlation analyses of seed wrinkling and source-sink relationships revealed negative correlations between leaf net photosynthetic rate,dry weight of nutrient organ,leaf-to-pod ratio and seed starch content and wrinkling level;the leaf area index and reproductive organ dry weight were positively correlated with wrinkling level.[Conclusion]Fourteen source-sink relationship traits of soybean germplasm were combined into four principal component factors with a cumulative contribution of 78.836%;multiple linear regression analyses showed that major source-sink relationship traits such as net photosynthetic rate of leaves,leaf area index,dry weight of nutrient organs,dry weight of reproductive organs,and starch content of grains were the main factors affecting the grade of seed wrinkling.关键词
大豆种质/源库关系/籽粒皱缩等级Key words
soybean germplasm/source-sink relationship/seed wrinkling grade分类
农业科学引用本文复制引用
黄俊霞,谢甫绨,冀宝璐,赵伟,王小凡,赵翔,姚兴东,张惠君,王海英,敖雪..大豆种质鼓粒期源库关系及籽粒皱缩性鉴定指标筛选[J].沈阳农业大学学报,2025,56(3):14-22,9.基金项目
辽宁省科技厅农业重大专项项目(2022JH1/10200002) （2022JH1/10200002）
