CSIRO Division of Plant Industry, P.O. Box 1600, Canberra, Australia.
Planta. 1976 Jan;128(2):93-100. doi: 10.1007/BF00390309.
An analysis of the pattern of movement of (14)C-labelled flag leaf assimilates in wheat (Triticum aestivum l. c.v. Gabo) during grain development, indicated that the greater the requirement for assimilates by the ear the more rapid was the speed of movement of these through the peduncle to the ear and also the lower their concentration. Experiments with [(14)C] indoleacetic acid ([(14)C]IAA) suggested that auxin production by the grains was not responsible for the control of assimilate translocation through the peduncle. Limiting the supply of available assimilates by shading the lower parts of the plant, did not significantly alter the speed of movement of (14)C-photosynthate through the peduncle, while severing half of the vascular tissue in the peduncle altered the pattern of movement of (14)C to the ear and enhanced the speed of movement of (14)C through the remaining functional conducting tissue. These results are discussed in relation to the mechanism of translocation.
对小麦（Triticum aestivum l. c.v. Gabo）旗叶同化产物在籽粒发育过程中的移动模式进行分析表明，穗部对同化产物的需求越大，这些同化产物通过穗柄向穗部的移动速度就越快，浓度也越低。用[(14)C]吲哚乙酸([(14)C]IAA)进行的实验表明，籽粒中生长素的产生并不是控制同化产物通过穗柄转运的原因。通过遮蔽植株下部来限制可利用同化产物的供应，并没有显著改变(14)C 光合产物通过穗柄的移动速度，而切断穗柄中一半的维管束组织则改变了(14)C 向穗部的移动模式，并增强了(14)C 通过剩余功能传导组织的移动速度。这些结果与转运机制有关。
