磷素营养对菜豆叶片解剖结构的影响

    Effects of P Nutrition on the Leaf Anatomic Structure of Common Beans

    • 摘要: 通过水培试验,对来源于不同基因库的菜豆基因型其叶厚度、栅栏组织,海绵组织厚度,单位面积栅栏组织细胞数,栅栏组织细胞面积及液泡面积进行了系统的研究,研究结果表明:磷素营养供应不足时菜豆整株吸磷量降低,生长受到抑制;中叶叶片厚度,栅栏组织,海绵组织厚度增加(DOR60除外),单位面积栅栏组织细胞数也增加,而大部分菜豆基因型的栅栏组织细胞面积及液泡面积减小。此外,不同菜豆基因型对缺磷的反应也有不同,磷高

       

      Abstract: Common bean genotypes were studied for their leaf anatomic response to low P in the hydroponic experiments. The results indicated that P deficiency decreased P uptake and inhibited the growth of plants. Under low phosphorus conditions, the middle-leaf thickness, thickness of palisade tissue and spongy tissue(except DOR 60), cell number of palisade tissue also increased, while most cell and vacuole areas decreased. There was genotypic variation in response to low P. The P efficient large-seeded genotypes tended to have more cell numbers per tissue area but smaller cell area per cell.

       

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