文献类型： 外文期刊

作者： Morimoto, Takuya ¹ ; Ohta, Daichi ² ; Matsuda, Yunosuke ¹ ; Sekiguchi, Ryo ¹ ; Zhang, Lumin ¹ ; Koike, Yuto ² ; Nagasaka, Kyoka ³ ; Nakano, Ryohei ³ ; Itai, Akihiro ¹ ;

作者机构： 1.Kyoto Prefectural Univ, Grad Sch Life & Environm Sci, 74 Kitaina Yazuma, Kyoto 6190244, Japan

2.Kyoto Prefectural Univ, Fac Life & Environm Sci, Kyoto 6190244, Japan

3.Kyoto Univ, Grad Sch Agr, Kyoto 6190218, Japan

4.Yunnan Acad Agr Sci, Inst Trop Ecoagr, Kunming 651300, Yunnan, Peoples R China

关键词： Hybrid crop; Intergeneric hybridization; Malus; Pollen tube; Pyrus

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.3； 五年影响因子：4.5 ）

ISSN： 0304-4238

年卷期： 2023 年 321 卷

页码：

收录情况： SCI

摘要： Hybridization across species and genus has been utilized to improve agriculturally important traits in crops. These interspecific and intergeneric hybridizations are often inhibited by reproductive barriers at the prezygotic and postzygotic stages. In this study, we used intergeneric hybridization between apple and pear to investigate the effects of species and varietal differences on pollen tube growth, seed germination, and seedling survival in a wide range of germplasms. In apple pistils pollinated by pears, inferior pollen tube growth was often observed for European pear cultivars, whereas hybrid seedlings derived from a cross between apple and European pear showed higher survival rate. In contrast, Japanese pear and Chinese pear pollination resulted in higher fruit setting which likely resulted from a higher rate of compatible pistils but a lower rate of seedling survival. Our results suggest the presence of both prezygotic and postzygotic barriers that occur independently in different crossing combinations. We also developed a Cleaved Amplified Polymorphic Sequence marker for detecting intergeneric hybrids derived from a wide range of crosses between apples and pears. The results of the present study will help in the development of intergeneric hybrids between apple and pear for introducing valuable traits from a diverse gene pool.