| 摘要: |
| 运用组织学方法分别对种植在水、旱条件下,水旱稻不同叶位叶片的解剖结构做了观察。结果发现。水、旱稻在水、旱条件下,叶脉频率随叶位上升而下降,但维管束总的数目却增加;叶片中央气腔的面积随叶位上升而增大,以倒3—4叶为最大,同时旱稻秦爱的值均大于水稻合江相应叶片的值,并且不论水稻或旱稻,水种条件下的叶片气腔明显大于旱种;叶片表面突起高度也同样随叶位上升而增高,并且不论水稻、旱稻,水种处理均大于旱种;叶片厚度、叶肉厚度水稻旱稻均以旗叶最厚,并且中上部几叶以水种条件下的较厚。木质部、韧皮部的面积以上部几叶最大,旱稻品种比水稻品种的叶片木质部、韧皮部面积通常为大。作者认为上述各性状的变化与其栽培环境的改变有关,因此可以认为是生态适应性在结构上的体现。 |
| 关键词: 维管束数 水稻品种 生态适应性 木质部 不同叶位叶片 组织结构 韧皮部 叶片形态结构 水稻旱种 旱稻 |
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| STUDIES ON THE ECO-ADAPTATION OF UPLAND AND LOWLAND RICE |
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| Abstract: |
| This report of the studies on the ecoadaptation of uplandand lowland rice was reached that,the vascular bundle frequency of leaves decreased with the leaf order from the base towards the top on the main stem,but the numbers of the tolal numbers of veins did the opposite;the 3th,4th leavea from the base had the biggest air cave,meanwhile,there was bigger air cave in the leaves under water condnition than that dry land condition weather for upland rice or lowland rice.The height of the surface lobe of leaf ex... |
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