大豆品种产量源流库指标相互关系分析

doi:10.3864/j.issn.0578-1752.2026.16.005

Abstract

Abstract:

【Objective】 To evaluate the contributions of source, flow and sink traits to soybean yield, clarify the relationships among these traits during yield formation, reveal the key physiological mechanisms underlying soybean yield formation, and provide a theoretical basis for soybean breeding. 【Method】 Qihuang 34, Lindou 9, Weidou 9, and Hedou 12 were investigated during the pod-setting and seed-filling stages. The photosynthetic performance, assimilate partitioning, and dry matter accumulation were analyzed throughout plant development by using ¹³C isotope labeling. Source-flow-sink traits were comprehensively evaluated, and radar chart analysis was applied to characterize the coordination of these traits among cultivars during yield formation.【Result】 (1) The correlations between source, flow and sink traits and yield varied considerably. The contributions of these traits to yield ranked as follows: leaf area index > 100-seed weight > net photosynthetic rate > palisade tissue thickness > effective quantum yield of PSII (ΦPSII) > glutamine synthetase activity > glutamate synthase activity > mean sieve tube diameter > stomatal conductance > midrib diameter. (2) Significant interactions were observed among source, flow and sink traits. Source-sink interactions were reflected by positive correlations of net photosynthetic rate, stomatal conductance and transpiration rate with 100-seed weight. Source-flow interactions were indicated by positive correlations of palisade tissue thickness and leaf thickness with net photosynthetic rate, whereas flow-sink interactions were represented by a positive correlation between mean sieve tube diameter and 100-seed weight. (3) Source, flow and sink traits differed markedly among cultivars. Qihuang 34 exhibited higher leaf area index, palisade tissue thickness, leaf thickness, net photosynthetic rate, ΦPSII, sustained dry matter accumulation in main stem pods, yield, 100-seed weight, glutamine synthetase activity, glutamate synthase activity, 3-day assimilate translocation to main stem pods and sustained assimilate translocation than the other three cultivars. Hedou 12 showed the largest midrib diameter, Weidou 9 had the highest seed number per plant, and Lindou 9 exhibited the greatest carbon assimilation capacity of branch pods. These results indicate that high soybean yield depends on the coordinated regulation of source, flow and sink traits rather than on any single trait.【Conclusion】 Among the four cultivars, Qihuang 34 achieved the highest yield owing to its larger leaf area index, stronger assimilate transport capacity, and greater 100-seed weight. Breeding high-yield soybean cultivars with coordinated source, flow and sink characteristics should prioritize germplasm with high photosynthetic efficiency based on ΦPSII, net photosynthetic rate and leaf area index, followed by evaluation of assimilate transport efficiency using leaf and vascular bundle anatomical traits and assessment of yield potential through nitrogen metabolism enzyme activities and sink capacity.

Key words: soybean, cultivar, yield, source-flow-sink, correlation

WANG Ke, GONG HaoRan, WANG YuBin, ZHANG YanWei, WANG CaiJie, LIU Xin, XU Ran. Analysis of Interrelationships Among Yield Source, Flow, and Sink Traits in Soybean Cultivars[J].Scientia Agricultura Sinica, 2026, 59(16): 3519-3540.

Figures/Tables 18

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品种Variety	审定区域Approval status	有效分枝Effective branches	特性Characteristic
齐黄34 Qihuang 34	国家审定Approved by the state	1.3	高产、优质High yield, high quality
菏豆12 Hedou 12	国家审定Approved by the state	1.0—3.0	高产、优质High yield, high quality
临豆9号Lindou 9	国家审定Approved by the state	3.7	高蛋白型High-protein
潍豆9号Weidou 9	山东省审定Approved by Shandong province	1.9	高油型High-oil

年份Year	品种Cultivar	栅栏组织厚度Palisade tissue thickness (μm)	叶片厚度Leaf thickness (μm)
2023	齐黄34 Qihuang 34	102.67±6.76a	195.50±4.85a
	菏豆12 Hedou 12	93.57±1.93b	184.27±2.18a
	潍豆9号Weidou 9	91.53±1.56b	187.13±0.85a
	临豆9号Lindou 9	95.23±2.31b	191.73±10.89a
2024	齐黄34 Qihuang 34	119.00±13.13b	218.90±11.80a
	菏豆12 Hedou 12	79.30±9.72c	172.20±3.34b
	潍豆9号Weidou 9	80.50±1.37c	165.10±2.44b
	临豆9号Lindou 9	98.60±2.12a	212.40±4.52a

年份 Year	品种 Cultivar	主叶脉直径 Midrib diameter (μm)	次叶脉直径 Secondary vein diameter (μm)	叶柄直径 Petiole diameter (μm)	筛管平均直径 Mean sieve tube diameter (μm)
2023	齐黄34 Qihuang 34	458.33±4.71c	185.90±13.36b	3180.83±15.09a	72.75±2.79a
	菏豆12 Hedou 12	716.33±12.30a	148.40±1.10c	2913.60±16.80b	67.78±3.90a
	潍豆9号Weidou 9	547.73±5.86b	195.00±4.52ab	2883.33±8.46b	67.67±1.81a
	临豆9号Lindou 9	368.20±2.85d	204.67±6.35a	2717.50±25.67c	70.05±0.74a
2024	齐黄34 Qihuang 34	584.63±5.12b	179.70±9.92b	2899.50±30.74b	126.80±7.94b
	菏豆12 Hedou 12	686.67±2.87a	143.97±6.93c	2688.53±33.33d	92.92±4.17c
	潍豆9号Weidou 9	587.47±1.30b	138.87±7.26c	2783.20±31.32c	83.80±5.85c
	临豆9号Lindou 9	420.33±2.06c	204.53±1.40a	3131.17±17.80a	121.97±4.57a

年份 Year	品种 Cultivar	株粒数 Grains per plant	百粒重 100-grain weight (g)	株数 Plants per hectare (plants/hm²)	产量 Yield (kg·hm^-2)	经济系数 Harvest index
2023	齐黄34 Qihuang 34	113.28±9.26ab	26.32±0.47a	143850.16±617.61a	3556.16±93.61a	0.52±0.02ab
	菏豆12 Hedou 12	104.45±5.51bc	24.81±0.53ab	149307.18±1217.73a	3446.93±94.9ab	0.53±0.01a
	潍豆9号Weidou 9	122.96±5.51a	19.48±1.85c	158772.30±5986.74a	3285.60±120.07bc	0.50±0.01b
	临豆9号Lindou 9	93.24±8.57c	23.10±0.83b	154006.30±1805.22a	3213.44±106.71b	0.50±0.02ab
2024	齐黄34 Qihuang 34	127.90±10.00a	26.49±1.23a	160269.12±2038.59a	3680.84±137.69a	0.52±0.02a
	菏豆12 Hedou 12	117.30±11.53ab	22.39±1.35b	150406.47±1210.47a	3360.94±75.51b	0.51±0.03a
	潍豆9号Weidou 9	113.97±6.69ab	20.01±0.64b	154585.85±959.76a	3337.15±46.85b	0.50±0.03a
	临豆9号Lindou 9	100.50±9.49b	20.30±1.10ab	162570.85±1302.93a	3254.55±75.12b	0.50±0.04a

Analysis of Interrelationships Among Yield Source, Flow, and Sink Traits in Soybean Cultivars

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