摘要
[目的]探索野生长果桑与桑树栽培品种之间的远缘杂交性能。[方法]通过建立长果桑(母本)×桑树栽培品种(父本)和桑树栽培品种(母本)×长果桑(父本)的2种远缘杂交类型,探讨长果桑与桑树栽培品种的远缘杂交育性。[结果]不同的远缘杂交类型、同一远缘杂交类型的不同组合在受孕率、结实率和可育性上有较大的差异。长果桑(母本)×桑树栽培品种(父本)的杂交受孕率45.35%～71.36%,平均受孕率56.64%;杂交结实率41.11%～60.36%,平均结实率50.45%;杂交可育性12.85%～33.75%,平均可育性22.31%。桑树栽培品种(母本)×长果桑(父本)的杂交受孕率23.06%～57.03%,平均受孕率39.39%;杂交结实率26.48%～50.89%,平均结实率34.04%;杂交可育性4.26%～18.33%,平均可育性9.40%。长果桑(母本)×桑树栽培品种(父本)的平均杂交受孕率、杂交结实率和杂交可育性比桑树栽培品种(母本)×长果桑(父本)分别提高17.25、16.41和12.91个百分点。[结论]为桑树遗传材料的创新和新品种的选育提供了更丰富的素材。
[Objective] The property of the distant hybridization between wild mulberry species and its cultivar was explored.[Method] Two hybridization models：wild mulberry（maternal）with long fruit size × cultivars（paternal）and mulberry cultivars（maternal）× wild species（maternal）with long fruit size（paternal）,were established for the research on the fertility of their offspring.[Results] There was a great difference in the pregnancy rate,seed-setting rate and fertility of the different types of distant hybridizations and the different combinations from same type of distance hybridization.The pregnancy rate,the seed-setting rate and the fertility of wild mulberry（maternal）with long fruit size × cultivars（paternal）was 45.35%-71.36%（average value：56.64%）,41.11%-60.36%（average value：50.45%）and 12.85%-33.75%（average value：22.31%）,respectively;and the pregnancy rate,the seed-setting rate and the fertility of mulberry cultivars（maternal）× wild species（maternal）with long fruit size（paternal）was 57.03%-23.06%（average value：39.39%）,26.48%-50.89%（average value：34.04%）and 4.26%-18.33%（average value：9.40%）.The pregnancy rate,the seed-setting rate and the fertility of wild mulberry（maternal）with long fruit size × cultivars（paternal）was 17.25%,16.41% and 12.91% higher than these of mulberry cultivars（maternal）× wild species（maternal）with long fruit size（paternal）.[Conclusion] Many more abundant materials for the innovation of mulberry genetic material and the breeding for new variety were provided.
出处
《安徽农业科学》
CAS
北大核心
2010年第26期14315-14316,14319,共3页
Journal of Anhui Agricultural Sciences
基金
贵州省科学技术基金[黔科合J字(2008)2073]
贵州省农科院专项[院专项(2008)027]
关键词
长果桑
桑树栽培品种
远缘杂交
杂交性能
Mulberry with long fruit size； Mulberry cultivar； Distant hybridization； Hybrid performance；
