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小麦穗轴维管组织的观察研究
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摘要:
1986年与1987年对六个普通小麦品种穗轴维管束系统观察结果,提供了小麦穗轴各部位大维管束数目及其横截面积变化的实验数据。证实小麦穗轴大维管束数目基部至顶端随节位上升而递减。但其递减的多少,因部位而异:穗的下半部递减量略高于穗的上半部。表明穗轴下部节片通向小穗的大维管束数略多于穗轴上部。
关键词:  维管系统,穗轴,小穗,大维管束数目与横截面积
DOI:
基金项目:
OBSERVATION ON THE GROWTH OF THE VASCULAR SYSTEM IN WHEAT RACHISES
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Abstract:
Observation was made on the growth of the vascular System of wheat rachises in 6 wheat varieties in 1986 and 1987, which resulted in experimental data of number and area of vertical change of the major bundles in the wheat rachises. It is confirmed that the numbers of the major bundles of wheat rachises decrease gradualy with the rachise intermodes from the base to the top, but the decreasing rate is difference in different position: the decreasing magnitude in the upper part is slightly less than that in the lower part. It is indicated that the number of major bundles going to the spikelet in the lower part of rachise internode of spike is a little more than that in the up part.
Key words:  Vascular system,Rachis,Spikelet,Rate of fall,Number and area of major bundles.

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