| 摘要: |
| 采用临时制片法，在显微镜下观察了冷、暖型小麦叶表皮气孔及穗下节间、倒二节间中维管束的结构特征。研究表明，冷、暖型小麦叶表皮气孔器的长度和宽度、气孔密度、穗下节间中维管束面积均无显著差异；冷型小麦倒二节间中维管束面积明显小于暖型小麦；冷、暖型小麦穗下节间、倒二节间单位横截面积中维管束数目、维管束总面积占茎横截面积的百分率均有显著差异。最后，讨论了冷型小麦蒸腾速率高、冠层温度低的原因。 |
| 关键词: 冷型小麦 解剖结构 气孔 维管束 叶表皮 茎 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目(39870477,30070150) |
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| Study on micro-structure characteristics of cold type wheat |
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| Abstract: |
| The micro-structure characteristics of leaf epidermis stomatal and vascular bundle in 1st internode and 2nd internode below the ear of cold and warm type wheat were observed under microscope by the method of temporary section.Here are the results:there are no clear difference in the length and width of leaf epidermis stomatal apparatus,stoma density and vascular bundle area in 1st internode below the ear between cold and warm type wheat.The vascular bundle area in 2nd internode below the ear of cold type wheat is obvious smaller than warm type wheat’s.There are clear difference in the vascular bundle number in unit transverse area of 1st internode and 2nd internode below the ear and the rate of the total area of vascular bundle and the transverse area of wheat stem between cold and warm type wheat.In the end,the reasons of higher transpiration rate and lower canopy temperature of cold type wheat were discussed. |
| Key words: cold type wheat micro-structure stoma vascular bundle leaf epidermis stem |
