黄淮海地区主栽大豆品种抗旱性比较

Comparative Study on Drought Resistance of Main Soybean Cultivars Planted in Huang-Huai-Hai Valley Region

选取齐黄34等黄淮海地区推广的8个大豆品种,研究其在苗期、花期和全生育期的抗旱性。结果显示,苗期、花期和全生育期干旱处理都对大豆生长发育造成一定影响,苗期干旱主要影响根系总长和表面积等根系性状,花期干旱主要影响茎粗和生育期等性状,全生育期干旱对株高、根系和产量性状产生全面影响。在所有供试品种中,徐豆14三个时期抗旱性均表现较好,是一个综合抗旱性较好的品种,冀豆17在苗期和花期干旱处理中表现较好,齐黄34在全生育期干旱处理中表现较好。

Eight soybean cultivars planted in Huang-Huai-Hai Valley region were selected for the experiment,and their drought resistance was evaluated at seedling,flowering and the whole growth stages. The results showed that there were certain influences on soybean growth when drought at seedling,flowering and the whole growth stages. The total length and surface area of roots were mainly affected by drought at seedling stage,the traits including stem thickness and growth period were affected by drought at flowering stage,and the plant height,root and yield traits were affected by the whole growth stage drought. Among all the cultivars in the experiment,Xudou 14 had better performance in drought resistance during the three stages,so it was a comprehensively drought-resistant variety; Jidou 17 had better drought resistance during the seedling and flowering stages,and Qihuang 34 had better drought resistance in the whole growth stage.