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Breeding erect plant type sweetpotato lines using cross breeding and gamma-ray irradiation

机译:利用杂交育种和γ射线辐照选育直立型甘薯品系

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摘要

Few sweetpotato (Ipomoea batatas Lam.) cultivars with erect plant type are available despite their advantages over spreading type, such as simplicity of cultivation and ability to adapt to limited space. One of the reasons is insufficiency of their agronomic characteristics for table use. So, it is important to overcome these drawbacks of ER-type lines. We attempted to breed new erect plant type sweetpotato lines having good agronomic traits using cross breeding and mutation breeding with gamma-ray irradiation. With cross breeding we successfully developed new erect plant type lines with almost equal levels of yield as compared to ‘Beniazuma’, one of the leading cultivars in Japan. However, mutation breeding failed to develop any promising lines because we could not obtain distinct erect plant type lines. In the future larger numbers of plants should be used for mutation breeding, and irradiation methods should be improved.
机译:尽管与蔓延型相比,直立型植物的甘薯(Ipomoea batatas Lam。)品种很少,但它们具有比蔓延型的优势,例如栽培简单和适应有限空间的能力。原因之一是它们在餐桌上的农艺特性不足。因此,重要的是要克服ER型管线的这些缺点。我们尝试使用交叉育种和伽马射线辐射诱变育种来培育具有良好农艺性状的新直立植物型甘薯品系。通过杂交育种,我们成功开发了新的直立植物类型品系,与日本领先的品种之一“ Beniazuma”相比,产量几乎相等。但是,突变育种未能开发出任何有希望的品系,因为我们无法获得独特的直立植物类型品系。将来应将更多的植物用于突变育种,并应改进辐照方法。

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