<紀要論文>
The Extent of Intersubgeneric Cross Compatibility between Japanese Plum (Prunus salicina Lindl.) and Peach (P. percica Batsch.)

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概要 Inetrsubgeneric crosses between seven peach cultivarsand 22 Japanese plum cultivars were carried out to produce intersubgeneric hybrid plants that were expected to have potential for new fruit cultiva...rs and rootstocks for peach. No hybrid plants were derived from peach×plum crosses, whereas many hybrid plants were derived from the reciplocal intersubgenetic crosses. Among the plum cultivars pollinates with peach cultivars,'Jinsanto' 'Formosa', 'Kasaharahatankyo', 'Oishiwase' and 'Manzaemon' showed high fruit set rates of more than 30%. The rate of harvested fruits in the nine crosses ranged from 5.4% to 25.4%. The rate of perfect seds ranged from about 70% to 90% as observed open-pollinated plum cultivars. in comparison between open pollination and pollination with 'Hakuho' pollen, the size of embryos was almost same in 'Yuko' and 'Oishiwase' and slightly small in 'Sordum' pollinated with 'Hakuho'. All of the perfectly developed embryos and some of the imperfectly developed embryos germinated and grew up to seedlings. Flower bud formation occurred in the intersubgeneric hybrid plants. However, most of the hybrid plants did not flower became of underdevelopment of the flower buds. All flowers developing in a efw hybrids showed very abnormal morphology and dropped immerdiately after the anthesis. The meiotic products in the anthers were irregular and showed high sterlity.続きを見る

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登録日 2009.04.22
更新日 2017.02.07