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以发芽势、发芽率、发芽指数、胚根长、胚轴长、幼芽长、幼苗鲜/干重的相对值为指标,通过PEG6000模拟干旱处理,对15份花生品种(系)进行萌发期抗旱性鉴定。结果显示,胁迫处理初期,低浓度处理对种子萌发有促进作用,随着胁迫处理时间的延长及胁迫处理浓度的升高,种子萌发受抑制程度增强。除相对幼芽长以外,其他相对指标都和品种综合抗旱能力呈极显著正相关。通过隶属函数法结合抗旱分级标准筛选出泰花4号、徐花13号、泰0125、泰0005等4份抗旱品种,泰花5号、濮花28、中花16等3份中抗材料,表明该方法可以作为一种快速、简便的鉴定花生萌发期抗旱性的方法。
The germination potential, germination rate, germination index, the length of radicle, the length of embryo axis, the length of young embryo and the fresh / dry weight of young seedling were used as indexes to simulate the drought of 15 peanut cultivars Drought resistance identification. The results showed that seedling germination was promoted by low concentration treatment at the early stage of stress treatment. With the prolongation of stress treatment and the increase of stress concentration, the seed germination was inhibited more. Except for the relative shoot length, other relative indices were significantly and positively correlated with the comprehensive drought resistance ability of varieties. Through the membership function method combined with drought resistance grading standards, we screened 3 anti-drought materials such as Taihua 4, Xuhua 13, Tai 0125, Tai 0005 and other 4 anti-drought varieties, Taihua 5, Puhua 28 and Zhonghua 16, This method can be used as a quick and easy method to identify the drought resistance of peanut germination.