红小豆萌发期耐旱种质筛选

Selection of Drought-Resistant Adzuki Bean Germplasm Resources at Germination Period

  • 摘要: 本研究采用聚乙二醇(PEG-6000)模拟干旱胁迫的方法,首先研究了不同PEG-6000浓度对3份红小豆品种发芽期的根长、上胚轴长、真叶数、发芽指数和活力指数的影响,明确了红小豆萌发期模拟干旱胁迫的最适PEG-6000浓度为10%;进而以10%的PEG-6000对40份红小豆种质资源进行萌发期抗旱性鉴定,利用隶属函数法进行耐旱性的综合评价筛选耐旱红小豆种质2份,较耐旱型种质2份,耐旱中间型种质5份,干旱较敏感型种质6份,其余25份为干旱敏感型种质。

     

    Abstract: Polyethylene glycol (PEG-6000) was firstly used to simulate drought stress to study the effect of different concentrations of PEG-6000 on root length, epicotyl length, true leaf number, germination index, vigor index of three adzuki bean varieties, and found that 10% of Polyethylene glycol(PEG-6000) was the suitable concentration for screening drought resistance resources at the germination period for adzuki bean. Subsequently 40 adzuki bean germplasm resources for drought resistance with 10% of PEG-6000 solution were elevated, and all data were analysised by stering function method. Among the 40 germplasm, two were strongly drought-resistant, two were drought-resistant, five were moderately drought-resistant, six were moderately drought-sensitive, and other 25 were highly drought-sensitive.

     

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