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首页> 外文期刊>Journal of Botany >New Cultivars Derived from Crosses between Commercial Cultivar and a Wild Population of Papaya Rescued at Its Center of Origin
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New Cultivars Derived from Crosses between Commercial Cultivar and a Wild Population of Papaya Rescued at Its Center of Origin

机译：商业品种与木瓜原产地的野生种群杂交后的新品种

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摘要

In order to generate new varieties, this study focused on the rescue and use of landraces and wildCarica papayaL. populations located at southern Yucatan, Mexico, to cross them with a commercial papaya cultivar (Maradol). In the cross L7 × M22, The native parent line L7 was used as the receiver parent while the commercial Maradol (M22) was used as the donor parent, seeking to generate genotypes with improved productivity and reduced plant height. Cluster analysis and principal components analysis grouped the genotypes firstly into those individuals with few fruits and those with many fruits and secondly into individuals with high and low plant height. Selected genotypes H13B, H17B, H19B, H68B, and H71B meet the desirable characteristics, such as reduced plant height (PH) and intermediate number of fruits per plant (NFP). These materials can be used now to produce new crosses to continue with the ongoing breeding program at CICY, seeking new varieties with higher productivity and adequate plant height, and also these genotypes will be preserved and integrated in the germplasm bankin situandin vitrofor further genetic work and possible exchange with other germplasm collections worldwide.
机译：为了产生新品种，本研究着重于地方品种和野生番木瓜的抢救和利用。墨西哥尤卡坦州南部的一些种群，将其与商品木瓜品种（马拉多）杂交。在杂交L7××M22中，将天然亲本系L7用作接收亲本，而将商品Maradol（M22）用作供体亲本，试图产生具有提高的生产率和降低的株高的基因型。聚类分析和主成分分析首先将基因型分为果实少的个体和果实多的个体，其次是株高高低的个体。选定的基因型H13B，H17B，H19B，H68B和H71B符合理想的特性，例如降低的株高（PH）和单株水果的中间数（NFP）。这些材料现在可用于生产新的杂交种，以继续进行CICY正在进行的育种计划，以寻求具有更高生产力和足够株高的新品种，并且这些基因型将被保存并整合到西图金丁种质库中，以进行进一步的遗传工作和可能与世界各地的其他种质资源交换。

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