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本研究选取不同光合速率的品种‘黑农 2 6’(高产低光效 )、‘黑农 40’、‘黑农 41’(高产高光效 )为材料 ,于大豆开花后的不同生育时期 ,对大豆的功能叶片、叶柄解剖学进行了研究。结果表明 :(1 )不同类型大豆的叶肉结构有明显区别。叶片厚度依次为‘黑农 40’ >‘黑农 41’ >‘黑农 2 6’。各期的基本趋势是一致的。栅栏组织的厚度和层数与叶片的厚度趋势一致。 (2 )各品种栅栏组织中的叶绿体数目均多于海绵组织 ,且高光效类型多于低光效类型。局部观察不同品种间 ,叶绿体内的基粒和间质片层结构高光效的也明显优于低光效的品种。 (3 )气孔包含数量和大小两个因素 ,气孔大小基本一致 ,下表皮数量 >上表皮 ,高光效类型 >低光效类型。 (4)各品种主脉维管束中木质部的导管数目依次为‘黑农 41’ >‘黑农 40’ >‘黑农 2 6’。
In this study, different varieties of photosynthetic rate ’Heinong 26’ (high yield and low light efficiency), ’Heinong 40’, ’Heinong 41’ (high yield and high light efficiency) as material, Soybean functional leaves, petiole anatomy were studied. The results showed that: (1) Different types of soybean leaf structure were significantly different. The order of leaf thickness was ’Heinong 40’> ’Heinong 41’> ’Heinong 26’. The basic trend of each period is the same. The thickness and number of palisade tissue are consistent with the trend of leaf thickness. (2) The number of chloroplast in palisade tissue was higher than that of spongy tissue, and the type of high light efficiency was more than that of low light efficiency. Local observation of different varieties, chloroplast grana and interstitial sheet structure of high light efficiency is also significantly better than low light efficiency varieties. (3) There are two types of stomatal factors: stomatal size, stomatal size, number of epidermis, number of epidermis> type of epidermis, high luminous efficiency> low luminous efficiency. (4) The number of xylem vessels in the vascular bundles of the main veins in each variety were in the order of ’Heinong 41’> ’Heinong 40’> ’Heinong 26’.