(60)Co辐照对澳洲坚果种子萌发与幼苗形态的影响

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澳洲坚果品种‘云澳57号’、‘云澳51号’、‘云澳41号’、‘云澳58号’的种子以剂量率为10Gy/h的60Co-γ射线进行辐照处理,剂量分别为40Gy、120Gy和200Gy。结果表明:60Co-γ射线辐照对澳洲坚果种子萌发有抑制作用,且不同品种对辐照剂量的敏感性不同;较低剂量(40Gy)的60Co-γ射线辐照会显著提高品种‘云澳41号’的萌发率,而品种‘云澳57号’则对所有剂量的辐照均不敏感;随着60Co-γ射线辐照剂量的增加,4个澳洲坚果品种的幼苗真叶长度、宽度和叶面积呈显著降低趋势;且60Co-γ
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