14. There are different types of pit-pair between the axial tracheids. the axial tracheid and the ray parenchyma, the axial tracheid and the ray tracheid.
轴向管胞之间、轴向管胞与射线薄壁细胞之间、轴向管胞与射线管胞之间,均有不同类型的纹孔对。
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15. There are different types of pit-pair between the axial tracheids. the axial tracheid and the ray parenchyma , the axial tracheid and the ray tracheid.
轴向管胞之间、轴向管胞与射线薄壁细胞之间、轴向管胞与射线管胞之间,均有不同类型的纹孔对。
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16. The tracheid and sieve tube elements are all differentiated from the procambia in the center of the haustoria, and the former occurs prior to the latter.
吸器中管胞和筛管都是从吸器中央具有原形成层特性的细胞分化的,管胞的分化先于筛管,或同时进行。
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17. The broken - line graph of average values of families show evident differences in wood basic specific gravity and tracheid length between different regions.
家系均值折线图显示,不同地区木材的基本密度、管胞长度层次明显。
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18. Among the climatic factors which affect the geographic variation of tracheid morphological, moisture and rainfall are the principal factors, secondary is temperature.
影响管胞形态地理变异的气候因子中,水湿条件是主导因素,其次是温度。
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19. The results showed: from pith outward, the tracheid length and diameter and cell wall thickness of Taxodium ascendens wood with or without intermittent flood all increased.
20. The results indicated that the five traits like height, diameter at breast height, volume, wood basic density and tracheid length showed at least significant genetic variation among clones.
结果表明,无性系间树高、胸径、材积、木材基本密度和管胞长度存在显著至极显著差异。
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21. The results indicated that the five traits like height, diameter at breast height, volume, wood basic density and tracheid length showed at least significant genetic variation among clones.