切割花柱方式对亚百系内杂交花粉管生长和结实的影响

用常规柱头授粉和切割不同长度花柱4种授粉方式对亚百系内杂交的花粉管生长和结实情况进行了研究.结果表明:同一系内各组合亲和性存在差异,亲和性较好的组合为"金色号角×多安娜"、"普瑞头×索莱尔",次之为"多安娜×普瑞头","金色号角×普瑞头","普瑞头×多安娜"为不亲和组合;同一系内组合中,采用常规柱头授粉比切割花柱授粉得到胚的比例高,所有组合花粉管均能进入子房,而且随着切割花柱长度的增加,花粉管在花柱中及进入子房的量是依次递减的,种子数目与花粉管的生长情况呈正相关;果实膨大系数不能反映果实是否结籽;所有组合中都存在胚囊不亲和现象,形成了无胚仅有胚乳的种子.

Influences on Pollen Tube Growth and Seed Formation in Intraspecific Crosses Between the Asiatic Hybrid Lily by the Cut-style Techniques

In this experiment,Pollen tube growth and seed formation of Asiatic hybrids in Lilium were studied by four pollination techniques-conventional pollination and cut-different-style pollination.Results suggested that:the compatibility of different combinations in the same hybrid was different,some combinations with superior cross-compatibility were "Golden Horn Pollyana"and"Prato Soleil",some combinations with inferior cross-compatibility were "Pollyana Prato" and"Golden Horn Prato",the combination with cross-incompatibility was "Prato Pollyana";in the same hybrid,conventional pollination obtained more embryos than cut-style pollination,the pollen tubes of all the combinations entered into the ovary,and with the lenth of cutted style added,the numbers of pollen tube in the style and ovary decreased gradually,the number of seeds and the pollen tubegrowth presented correlation;the sweeling coefficient of fruit can't show whether the fruit had seeds;the embryo sac incompatibility was showed all the combinations,and resulted in the formation of seeds without embryos.