Translocation of 14C-sucrose within the Ear in Durum and Aestivum Wheat Varieties |
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Authors: | I Ravi & M C Ghildiyal |
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Institution: | Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi 110012, India |
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Abstract: | Excised ears of Triticum durum (HD 4502 and B 449) and T. aestivum (Kalyansona and Kundan) varieties were cultured in 14C-sucrose, and the uptake and distribution of 14C within the ear was examined. Species-level differences in the distribution of 14C to spikelets at basal, middle and apical positions in the wheat ear (vertical distribution) were observed. T. aestivum var. Kalyansona and Kundan showed no limitation in vertical translocation of 14C-sucrose, whereas in T. durum there was a decrease in the distribution of 14C to apical spikelets. Within a spikelet, the distribution of 14C-sucrose to distal grains was significantly less than that to proximal grains in all the genotypes. |
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Keywords: | 14C-sucrose ear grain spikelets translocation wheat species |
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