Evaluation of Branched Ear Derivatives of Triticum aestivum L.
The branched spikes of Triticum turgidum L. have a potential of producing a high number of kernels. Some of the selected lines of T. turgidum yielded up to 150 kernels per spike as compared to 60–70 kernels per spike in the common wheat cultivar Chenab-70. The best of these lines were crossed with the common wheats Chenab-70, Mexipak, and C-271. Among the lines obtained by selection from the advanced generations of the T. turgidum × Chenab-70 cross, some are similar to Chenab-70 with respect to tillering, plant shape, plant height, and leaf position, but their spikes are branched like those of the T. turgidum parent. These lines appear to be fairly homozygous. Chenab-70 produces, on the average, 60 kernels per spike, 34.8 g of grain per plant and has a 1000-kernel weight of 35 g. The number of kernels per spike, the yield of grain per plant and the 1000-kernel weight of the selected hybrid lines ranged from 25 to 133, from 8.5 to 59.6 g, and from 30.0 to 46.0 g, respectively, which shows that the chances of obtaining high-yielding new common wheat cultivars having spikes branched as those of the T. turgidum parent fairly good.
KeywordsCommon Wheat Leaf Position Common Wheat Cultivar Late Tiller Hexaploid Triticale
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- Austin, R. B. and Jones, H. G. (1974). The physiology of wheat. Part III. Annual Report, pp. 20–23. Plant Breeding Institute, Cambridge.Google Scholar
- Bonvicini, M. (1955). Nuove caratteristiche genetiche per l’incremento della produzione granaria. Sententi Elette, 1: 2–7.Google Scholar
- Bunting, A. H. and Drennan, D. S. H. (1965). Some aspects of the morphology and physiology of cereals in the vegetative phase. In The Growth of Cereals and Grasses ( Milthorpe, F. L. and Ivins, J. D. (eds.). Butterworth, London.Google Scholar
- MacDonald, M. D. (1968). Recent development of hexaploid Triticales in Canada. Euphytica [Suppl.J 1: 185–187.Google Scholar
- Rawson, H. M. (1970). Spikelet number, its control and relation to yield per ear. Aust. J. Biol. Sci. 23: 1–15.Google Scholar