| 北京地区板栗胚珠发育的研究 |
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| 引用本文： | 杜桂森,黄勤妮,李增彬,王晓军,张书明.北京地区板栗胚珠发育的研究[J].首都师范大学学报(自然科学版),1992(3). |
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| 作者姓名： | 杜桂森 黄勤妮 李增彬 王晓军 张书明 |
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| 作者单位： | 北京师范学院生物系
(杜桂森，黄勤妮)，北京师范学院地理系
(李增彬)，北京怀柔县板栗试验站
(王晓军)，北京怀柔县板栗试验站(张书明) |
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| 摘 要： | 北京地区,板栗胚珠原基于5月下旬在子房室壁上发生并缓慢生长。6月中旬生长迅速,到6月下旬,分化形成了内、外珠被和珠心。胚囊位于珠心顶部,胚囊下方的珠心组织形成珠心柱。7月上旬胚珠发育出现差别。7月下旬成育胚珠在珠孔端形成球形胚,败育胚珠的珠心组织解体。本文还对板栗产生空篷的原因做了分析。
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| 关 键 词： | 板栗 胚珠 胚 空篷 |
On the Ovule Growth of Chestnut in Beijing Area |
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| Du Guisen,Huang Qinni,Li Zengbin,Wang Xiaojun,Zhang Shuming.On the Ovule Growth of Chestnut in Beijing Area[J].Journal of Capital Normal University(Natural Science Edition),1992(3). |
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| Authors: | Du Guisen Huang Qinni Li Zengbin Wang Xiaojun Zhang Shuming |
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| Institution: | Du Guisen,Huang Qinni,Li Zengbin,Wang Xiaojun,Zhang Shuming Department of Biology,Beijing Teachers' College Department of Geography,Beijing Teachers' College Huairou County Chestnut Experiment Station,Beijing |
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| Abstract: | In Beijing area orginal state of ovule occurs on ovary wall and growsslowly in the last ten-day of May. In the second ten-day of June The ovulegrows rapidly and develops into bitegminous and crassinucellar formation inthe last ten-day. Embryo sac lies on the top of nucellar. Nucellar tissuesunder ovule form nucellar colum. The difference of ovule growth occurs inthe first ten-day of July. Grown-up ovule forms sperical embryo at the endof ovule tube and nucellar tissue of degenrative ovule disinteyrate in thelast ten-day. |
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| Keywords: | chestnut ovule embyro empty fruit |
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