| Anatomic Study of Female Sterility of Pinus tabulaeformis Carr. |
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| 引用本文： | ChengPengjun LiFenglan ZhengCaixia. Anatomic Study of Female Sterility of Pinus tabulaeformis Carr.[J]. 中国林学(英文版), 2003, 5(1): 13-19 |
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| 作者姓名： | ChengPengjun LiFenglan ZhengCaixia |
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| 作者单位： | CollegeofBiologicalSciencesandBiotechnology,BeijingForestryUniversity,Beijing100083,P.R.China |
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| 基金项目： | National Natural Science Foundation of China(Grant No.39970602) |
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| 摘 要： | The anatomic research on the mutant clone of Pinus tabulaeformis Carr.in the seed orchard in Xingcheng,Liaoning Provinces was carried out.The female cone of the mutant clone looked like normal,but its ovules degenerated in early stage.This paper trics to find out the reason and time of ovule abortion.It seems that the ovule abortion is probably caused by female sterility because the microspores of this mutant clone were normal.Through the serial observations on the one-year-old macrosporangiates and the ovules of two-year-old female cones of mutant and normal clone,it is found that the reason of ovule abortion in mutant clone is the failure of the mitosis of free nuclei in the female gametophyte,and the time is about in the early April.
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| 关 键 词： | 油松 雌性不育 解剖结构 胚珠退化 有丝分裂 游离核 大孢子 |
Anatomic Study of Female Sterility of Pinus tabulaeformis Carr. |
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| Cheng Pengjun,Li Fenglan,Zheng Caixia. Anatomic Study of Female Sterility of Pinus tabulaeformis Carr.[J]. Forestry Studies in China, 2003, 5(1): 13-19 |
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| Authors: | Cheng Pengjun Li Fenglan Zheng Caixia |
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| Abstract: | The anatomic research on the mutant clone of Pinus tabulaeformis Carr. in the seed orchard in Xingcheng, Liaoning Province was carried out. The female cone of the mutant clone looked like normal, but its ovules degenerated in the early stage. This paper tries to find out the reason and time of ovule abortion. It seems that the ovule abortion is probably caused by female sterility because the microspores of this mutant clone were normal. Through the serial observations on the one-year-old macrosporangiates and the ovules of two-year-old female cones of mutant and normal clone, it is found that the reason of ovule abortion in mutant clone is the failure of the mitosis of free nuclei in the female gametophyte, and the time is about in the early April. |
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| Keywords: | Pinus tabulaeformis Carr. female sterility macrosporangiate free nuclei |
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