DENG Jun-cai,LEI Ting,ZHONG Lei,et al.The Correlation and Path Analysis Between the Main Agronomic Traits and the Resistance of Soybean to Seed Mildew in Field During Harvest Season[J].Soybean Science,2015,34(05):837-842.[doi:10.11861/j.issn.1000-9841.2015.05.0837]
大豆主要农艺性状与收获期籽粒田间霉变抗性的相关及通径分析
- Title:
- The Correlation and Path Analysis Between the Main Agronomic Traits and the Resistance of Soybean to Seed Mildew in Field During Harvest Season
- Keywords:
- Soybean; Field mildew; Agronomic traits; Quality traits; Correlation analysis; Path coefficient
- 文献标志码:
- A
- 摘要:
- 以18个西南大豆种质为研究材料,通过人工降雨室模拟夏播大豆收获期的连阴雨天气,在R8期处理大豆材料以诱发籽粒田间霉变,对大豆收获期籽粒田间霉变抗性与大豆主要农艺、品质性状进行相关及通径分析。结果表明:大豆收获期籽粒田间霉变抗性与种皮颜色、种脐颜色及结荚习性显著相关;与株高和主茎节数呈极显著正相关,与单株荚数和单株粒数呈显著正相关,与百粒重和脂肪相对含量呈显著负相关。通径分析结果表明:对霉变抗性影响较大的3个性状为单株荚数、主茎节数和单株粒数,株高、百粒重和脂肪相对含量亦间接通过单株荚数和主茎节数对霉变抗性产生显著影响。主茎节数多、株高较高、单株荚数多的深色小籽粒无限结荚大豆种质对收获期籽粒田间霉变的抗性较好;种皮种脐颜色、结荚习性、脂肪相对含量可作为筛选抗籽粒田间霉变大豆种质的重要参考指标。
- Abstract:
- The soybean seed mildew happened during the harvest season could lead great yield loss and quality deterioration.To investigate the correlation and path coefficient between the resistance of soybean to seed mildew and the main agronomic traits, as well as the quality traits, 18 soybean germplasms were induced to mildew in the artificial rainfall chamber which could simulate the continuous rainfall weather during the harvest season of soybean. The results showed that the resistance was significantly correlated with the seed color, hilum color and podding habits, and had positive correlation with the plant height, stem nod number, pod number and seed number per plant, while had negative correlation with the 100-seed weight and fat content.The path coefficient analysis showed that the pod number, stem nod number and seed number per plant had the most important impacts on the resistance, in addition, the plant height, 100-seed weight and fat content also effected the mildew resistance indirectly through the pod number and stem nod number per plant. Hence, from this study we could draw the conclusion that the soybean germplasms with more stem nodes, higher plant height, more pods, smaller seed, deeper color of seed coat or hilum and indeterminate podding habit had stronger resistance to seed mildew, the color of seed coat and hilum, the podding habits and the fat content could be used as important traits to screen soybean germplasms with good resistance to seed mildew.
参考文献/References:
[1]张海波. 浅析大豆的营养价值及其加工利用[J]. 山西农业科学,2009,37(5):73-75.(Zhang H B. Preliminary review on the nutritional value of soybean and its processing and utilization[J] Journal of Shanxi Agricultural Science,2009,37(5):73-75.)
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备注/Memo
基金项目:国家自然科学基金青年基金(31401329);国家现代农业产业技术体系建设专项(CARS-04-PS19)。