农大1号板栗授粉品种的择优研究  

Study on Selection of Paternal Cultivars for Nongda No.1 Chestnut

作　　者：谢治芳[1] 曾曙才[1] 谢正生[1] 

机构地区：[1]华南农业大学林学院,广东广州510642

出　　处：《南京林业大学学报（自然科学版）》2005年第5期94-96,共3页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：广东省科技攻关项目(C20211);国际合作项目"社区支持型有机农业示范"子专题

摘　　要：以阳山油栗等6个板栗品种为父本,对农大1号板栗(Castanea mollissima B1.cv.Nongdayihao)授粉品种的花期相遇情况、花粉量、座果率和花粉直感现象等进行了研究。结果表明:阳山油栗雄花盛花期与农大1号板栗雌花相遇期为4 d,铁粒头为3 d,双季栗、河源油栗和韶栗18号都为2 d;雄花长度及重量、花粉量的大小依次为:阳山油栗,铁粒头,双季栗,农大1号;以铁粒头作为授粉树的农大1号结实率最高,以双季栗为授粉树的次之。花粉直感现象对坚果单粒重存在一定影响。综合各种性状认为,铁粒头、韶栗18号和河源油栗是农大1号板栗的优良授粉品种。In the experiment, six Chinese chestnut cultivars, including Yangshan oil chestnut, Tielitou chestnut, Double-season chestnut, Shao 18 chestnut and Heyuan oil chestnut were used as paternal cultivars for Nongda No. 1 chestnut. Yangshan oil chestnut had a common florescence time of 4 days with Nongda No. 1 chestnut, followed by Tielitou （3 days） and other chestnut varieties（2 days）. Yangshan oil chestnut had the longest and heaviest male inflorescence, followed by Tielitou, Double-season chestnut and Nongda No. 1 chestnut in a decreasing sequence. Nongda No. 1 chestnut pollinated with Tielitou chestnut, Double-season chestnut and Yangshan oil chestnut had a fertile seed ratio of 91. 25%, 80. 00% and 14% respectively. When self pollinated and artificially pollinated with its own pollens, e ratios were 19.10% and 10.82%. e single seed weight. Based on respectively. Metaxenia phenomenon was observed in experimental results, we believed that Tielitou, Shao 18 chestnut and Heyuan oil chestnut were suitable paternal cultivars for Nongda No. 1 chestnut.

关 键 词：农大1号板栗 授粉品种 花期相遇 花粉直感现象 

分 类 号：S727[农业科学—林木遗传育种]