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首页> 外文期刊>Bulletin of Pure and Applied Sciences, B. Botany >EVALUATIONS OF VESSEL ELEMENTS AND RAYS IN THE TRUNK OF THEOBROMA CACAO
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EVALUATIONS OF VESSEL ELEMENTS AND RAYS IN THE TRUNK OF THEOBROMA CACAO

机译：Cacao躯干中血管元素和光线的评估

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摘要

The morphology of the vessel elements and rays in the trunk of a fruiting tree of Theobroma cacao were carried out with the aid of light microscope. The vessel elements were short and narrow being less than 350um and occurred in solitary and multipleforms. The ray tissues were both homogeneous and heterogeneous in distribution. Vessel and ray morphology such as length, diameter and height were evaluated, fifty vessels and rays were measured and thereafter the data were subjected to ANOVA and DuncanMultiple Range Test (D.M.R.T). The total average length (um) and diameter of the vessels were 340.69 ± 182.27 and 78.62 ± 32.66 respectively. The pool means of vessel lengths (um) at base, middle and top positions of the trunk were 422.31 ± 152.20, 349.23 ± 163.23 and 250.53 ± 189.39 respectively. The diameters (um) of the vessels on the other hand, were averages of 86.34 + 35.96, 79.24 ± 32.06 and 70.28 ± 27.96 for the base, middle and top positions of the trunk respectively. The total height (um) and diameter (jam) of the rays were averages of 0.79 ± 0.47 and 74.85 ± 36.68 respectively. From the axial direction, the pool means of the height of rays were 1.09 ± 0.33, 0.78 ± 0.44 and 0.52 ± 0.45 for the base, middle and top regions of the trunk respectively. At P < 0.05, the length and diameter of vessels decreased significantly from the base to the top of the trunk. Similarly, the heights and diameters of rays in the trunk decreased significantly from base to top. The physiological advantages of the types of vessel and rays were discussed vis- a- vis the previous assertions of authors within the present context.
机译：利用光学显微镜对可可树果实树干中导管分子和射线的形态进行了研究。导管分子短而窄，直径小于350μm，呈单体型和多体型。射线组织的分布既均匀又不均匀。评估血管和射线形态，如长度、直径和高度，测量50条血管和射线，然后对数据进行方差分析和邓肯多范围检验（D.M.R.T）。血管的总平均长度（um）和直径分别为340.69±182.27和78.62±32.66。躯干底部、中部和顶部血管长度（um）的池平均值分别为422.31±152.20、349.23±163.23和250.53±189.39。另一方面，躯干底部、中部和顶部的血管直径（um）分别为86.34±35.96、79.24±32.06和70.28±27.96。射线的总高度（um）和直径（jam）的平均值分别为0.79±0.47和74.85±36.68。从轴向来看，躯干底部、中部和顶部的射线高度池平均值分别为1.09±0.33、0.78±0.44和0.52±0.45。在P<0.05时，血管的长度和直径从树干底部到顶部显著减少。同样，树干中射线的高度和直径从底部到顶部显著降低。在目前的背景下，与作者之前的断言相比，讨论了血管和射线类型的生理优势。

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