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[目的]鼓粒期是大豆种质籽粒形成和充实的关键时期，源库关系的协调与否直接影响籽粒的灌浆速度和饱满度。研究大豆种质鼓粒期源库关系与籽粒皱缩的关系，有助于揭示皱缩籽粒形成的生理机制，以期为育种工作者提供更精准的育种目标和策略。[方法]采用不同来源的355份大豆种质资源为试材，测定了鼓粒期源库关系和成熟期籽粒皱缩等指标，并分析了鼓粒期源库关系与籽粒皱缩的关系。[结果]355份大豆种质可划分为5个皱缩等级，分别为0级（9份）、3级（321份）、5级（3份）、7级（21份）和9级（1份），等级越高，籽粒皱缩越严重。籽粒皱缩和源库关系相关分析发现，叶片净光合速率、营养器官干重、叶荚比和籽粒淀粉含量与皱缩等级存在负相关关系；叶面积指数和生殖器官干重与皱缩等级存在正相关关系。[结论]大豆种质的14个源库关系性状综合成4个主成分因子，累积贡献率为78.836%；多元线性回归分析表明，叶片净光合速率、叶面积指数、营养器官干重、生殖器官干重、籽粒淀粉含量等主要源库关系性状是影响籽粒皱缩等级的主要因素。
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.
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基本信息:
DOI：
中图分类号:S565.1
引用信息:
[1]黄俊霞,冀宝璐,赵伟等.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(03):14-22.
基金信息:
辽宁省科技厅农业重大专项项目（2022JH1/10200002）