EFFECTS OF HYPERGRAVITY ON THE ELONGATION GROWTH IN RADISH AND CUCUMBER HYPOCOTYLS
EFFECTS OF HYPERGRAVITY ON THE ELONGATION GROWTH IN RADISH AND CUCUMBER HYPOCOTYLS
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DOI：
10.1007/bf02344306
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发表时间：
1995-03-01
影响因子：
2.8
通讯作者：
YAMADA, M
中科院分区：
文献类型：
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作者：
KASAHARA, H;SHIWA, M;YAMADA, M
在新开发的离心机上，研究了萝卜和黄瓜幼苗下胚轴在超重力下的伸长生长（Kasahara et al. 1995）。超重力对伸长生长的影响在两个物种之间存在差异。与对照条件（C+1 g和C-1 g）相比，基部超重力（H+20 g）降低了萝卜下胚轴的伸长率，但在顶端超重力（H-13 g）下没有。在黄瓜下胚轴中，除了基瓣外，顶尖的超重力也抑制了伸长的生长。在这些条件下，萝卜和黄瓜的下胚轴伸长生长都有所减少，同时其厚度也有所增加。虽然中性糖的相对组成没有明显的差异，但每单位长度下胚轴的细胞壁成分（果胶物质、半纤维素和纤维素）的数量在暴露于超重力时增加了。
The elongation growth of the hypocotyls of radish and cucumber seedlings was examined under hypergravity in a newly developed centrifuge (Kasahara et al. 1995). The effects of hypergravity on elongation growth differed between the two species. The rate of elongation of radish hypocotyls was reduced under basipetal hypergravity (H+20 g) but not under acropetal hypergravity (H-13 g), as compared to growth under the control conditions (C+1 g and C-1 g). In cucumber hypocotyls, elongation growth was inhibited not only by basipetal but also by acropetal hypergravity. Under these conditions, the reduction in the elongation growth of both radish and cucumber hypocotyls was accompanied by an increase in their thickness. Although no distinct differences in relative composition of neutral sugars were found, the amounts of cell-wail components (pectic substances, hemicelluloses and cellulose) per unit length of hypocotyls were increased by exposure to hypergravity.