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mesarch adj.1.【植物;植物學】中始式的。2.【生態】中生演...

mescal

1 . the study of comparative anatomy on the structure of seedlings of acorus tatarinowii and zantedeschia aethiopica suggested a . tatarinowii was more primitive “ x “ - shape mesarch haplostele , while z aethiopica atactostele ; the actinostele of root of the former was di - to octoarch , but the latter only di - to pentarch ; the pattern of endothecial wall thickening in a . tatarinowii was characteristic of five - face thickened and contained passage cell , while z . aethiopica four - faced thickened and known as casparian strip 通過對石菖蒲和馬蹄蓮幼苗結構的比較解剖學研究,發現石菖蒲幼苗的子葉節區下部為原始的中始式二原型的“工”字形的單中柱,而馬蹄蓮為散生中柱;石菖蒲根的維管柱為2 - 8原型星狀中柱,馬蹄蓮為2 - 5原型星狀中柱。石菖蒲根的內皮層細胞壁為馬蹄形五面加厚;而馬蹄蓮為凱氏帶四面加厚。