| 京白梨花药开裂异常的解剖学研究 |
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| 引用本文： | 胡建芳,张东亚,高芳,张文. 京白梨花药开裂异常的解剖学研究[J]. 西北植物学报, 2009, 29(6) |
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| 作者姓名： | 胡建芳 张东亚 高芳 张文 |
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| 作者单位： | 1. 中国农业大学,农学与生物技术学院,北京,100094
2. 新疆林业科学院经济林研究所,乌鲁木齐,830000 |
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| 摘 要： | 比较研究了京白梨(Pyrus ussuriensis Maxim.)、鸭梨、雪花梨花药开裂特性、环境条件对花药开裂的影响以及花药开裂异常的解剖学结构,结果表明:(1)京白梨花药开裂率明显低于鸭梨和雪花梨,使其产生花粉的量较少,从而导致传粉能力较弱.(2)京白梨、鸭梨、雪花梨在环境温度为25℃,相对湿度在 60%～80%时最适宜花药开裂,但京白梨花药开裂率始终低于鸭梨和雪花梨.(3)在京白梨花药发育后期不能形成开裂腔是引起花药不开裂的主要原因,而导致开裂腔不能形成的原因可能与单核期的绒毡层细胞不退化和药室内壁细胞不进行'U'字型加厚有关.
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| 关 键 词： | 京白梨 散粉 花药开裂 温湿度 茉莉甲酯 开裂腔 |
Anatomical Structure of Anther with Abnormal Dehiscence in 'Jingbaili' (Pyrus ussuriensis Maxim.) Pear |
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| HU Jian-fang,ZHANG Dong-y,GAO Fang,ZHANG Wen. Anatomical Structure of Anther with Abnormal Dehiscence in 'Jingbaili' (Pyrus ussuriensis Maxim.) Pear[J]. Acta Botanica Boreali-Occidentalia Sinica, 2009, 29(6) |
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| Authors: | HU Jian-fang ZHANG Dong-y GAO Fang ZHANG Wen |
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| Affiliation: | HU Jian-fang1,ZHANG Dong-ya2,GAO Fang1,ZHANG Wen1 (1 College of Agronomy , Biotechnology,China Agricultural University,Beijing 100094,China,2 Reseach Institute of Economic Forest,Xinjiang Academy of Forestry,Urumchi 830000,China) |
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| Abstract: | In this paper,the ability of characteristics of anther dehiscence,factors that influence anther dehiscence and mechanism of anther dehiscence for morphology were investigated in Pyrus ussuriensis Maxim..The results showed that:the rate of anther dehiscence or the pollen number per anther in 'Jingbaili' was much lower than that in both yali and xuehuali,suggesting that the lower efficiency of pollination in 'Jinbaili' was caused by its lower rate of anther dehiscence together with its lower number per anther... |
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| Keywords: | Pyrus ussuriensis Maxim. pollination anther dehiscence tempear ture and relative humidity methy jasmonate (MeJA) cavity for dehiscence |
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