セイヨウナシ10品種における単為結果性と自家および交雑不和合性

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献1件 参考文献26件

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  • Parthenocarpy and Self- and Cross-incompatibility in Ten European Pear Cultivars

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Self- and cross-incompatibility in European pear (Pyrus communis L.), which is estimated by the fruit set and seed formation, is yet unclear. We carried out self-, cross- and non-pollinations with one flower per cluster on 10 European pear cultivars, and estimated their parthenocarpic potential, and self- and cross-incompatibility. Most cultivars exhibited parthenocarpy, which suggests that the fruit set is not a suitable criterion for distinguishing incompatibility from compatibility. However, clear judgment could be provided by using the self-incompatibility (SI) index, (the number of viable seeds per flower obtained from test pollination / the number of viable seeds per flower resulting from compatible cross-pollination) × 100, as a new criterion. Based on this index, ‘Grand Champion’ has proven to be partially self-compatible, whereas others were classified as self-incompatible. Traits of the seeded fruits, such as weight, size, and soluble solids content, were superior to those of the parthenocarpic fruits. Thus, cross-compatible pollination is necessary for a stable fruit set and production of large, good quality fruits in cultivars with a high parthenocarpic potential. Two cross-incompatible combinations were found between ‘Flemish Beauty’ and ‘Starkrimson’, and ‘Bartlett’ and ‘Seigneur d' Espéren’, respectively.

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  • 園芸学会雑誌

    園芸学会雑誌 74 (6), 424-430, 2005

    一般社団法人　園芸学会

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