2.The HPHR has more vascular bundles and a much bigger area of single vascularbundle, total vascularbundle, total phloem and total xylem in the first internode than Shanyou 63.
4.Bundle sheath The ring of parenchymatous or sclerenchymatous tissue, usually one cell thick, that surrounds the vascularbundle in an angiosperm leaf.
7.The stems and rhizomes were observed to differ in cortex-cell layer, perivascular fiber-ring presence, vascular cylinder and pith proportions, vascularbundle number and secondary growth and these differences were associated with their own physiological functions.
8.With the different development degree of the stem, the distributions of anthraquinone compounds showed different characteristics in the epidermis, cortex, vascularbundle and pith rays.
9.More anthraquinone compounds was distributed in pith ray cells and the tissues of mature stem suchas bundle sheaths in large-scale vascularbundle, primary phloem and primary xylem than that in young stem. [Conclusion] The distribution of anthraquinone compounds in the stem was of multilocus.
10.A severe CTV isolate, CTV-3 infected Mexican lime had 63% of vascularbundle sheath cell degraded at the prominent vein clearing area and 34%-48% in the less prominent areas.
