| 气孔在菜心子叶表皮分布的研究 |
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| 引用本文： | 贺凤丽,马三梅.气孔在菜心子叶表皮分布的研究[J].北方园艺,2009(10). |
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| 作者姓名： | 贺凤丽 马三梅 |
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| 作者单位： | 暨南大学,生物工程学系,广东,广州,510632 |
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| 摘 要： | 对菜心(Brassica chinensis L.var.parachinensis(Bailey))子叶表皮上气孔的分布、气孔密度、气孔指数进行了研究.结果表明:菜心子叶表皮细胞形状为无规则形,上表皮的普通表皮细胞垂周壁浅波形,下表皮的普通表皮细胞垂周壁则由浅波形逐渐变为深波形.上、下表皮均有气孔的分布.气孔类型为不等型,保卫细胞呈肾形.子叶上、下表皮的气孔密度的范围分别是(79.25±22.99)～(204.31±40.17)个/mm2和(102.79±30.85)～(242.95±62.78)个/mm2,且下表皮的气孔密度明显大于上表皮的气孔密度;气孔密度均随子叶的生长而下降,有显著甚至极显著的差异.而气孔指数的变化则较为复杂,但同一时间里上表皮的气孔指数大于下表皮的气孔指数.
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| 关 键 词： | 菜心 子叶 气孔 气孔密度 气孔指数 |
Stomata Distribution on the Cotyledon of Brassica chinensis L.var.Parachinensis(Bailey) |
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| HE Feng-li,MA San-mei.Stomata Distribution on the Cotyledon of Brassica chinensis L.var.Parachinensis(Bailey)[J].Northern Horticulture,2009(10). |
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| Authors: | HE Feng-li MA San-mei |
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| Institution: | HE Feng-li,MA San-mei(Department of Biotechnology,Jinan University,Guangzhou,Guangdong 510632,China) |
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| Abstract: | The stomatic distribution,stomata density,stomatal index of Brassica chinensis L.var.parachinensis(Bailey) cotyledon surface were investigated by light microscopy.The main conclusions were as follows:Ordinary epidermal cells were usually irregular in shape,with the anticlinal walls of the upper epidermal cells sinuolate and the lower epidermal cells sinuous or sinuate.The stomata were anomocytic and existed on both the upper and the lower epidermis.The major shapes of stomata were elliptical,while the guard... |
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| Keywords: | Brassica chinensis L var parachinensis(Bailey) Cotyledon Stomata Stomata density Stomatal index |
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