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Production and survival of tillers of wheat and their contribution to yield

Published online by Cambridge University Press:  27 March 2009

H. M. Ishag  and
M. B. Taha
H. M. Ishag
Affiliation:
Hudeiba Agricultural Research Station, P.O. Box 31, Ed-Damer, Sudan
M. B. Taha
Affiliation:
Hudeiba Agricultural Research Station, P.O. Box 31, Ed-Damer, Sudan
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Summary

The effect of sowing date and nitrogen on tillering patterns, survival and contribution of reproductive tillers to grain yield of standard and Mexican wheat cultivars were studied for two seasons.

Maximum number of tillers/plant, 3·2–4·5, was observed after 40 and 27 days from sowing for 1970–1 and 1971–2 respectively. The number of ears/plant was 1·4 at the end of the growing season. Varieties differed in tillering, and LRN10 and Giza 155 produced more reproductive tillers than Falchetto and Mexipak. Nitrogen application increased tillering efficiency, i.e. ratio of fertile to total tillers produced. Only 26% of tillers appearing in the axil of the first true leaf (T1) and 10% of tillers in the axil of the second true leaf (T2) survived to produce ears. The high mortality of tillers was attributed to high air temperature prevailing during the growth period (33 °C by day; 18 °C by night). Eared tillers did not die and were self supporting because of the photosynthesis by the ear.

Grain weight/tiller was positively correlated with tiller dry weight at heading, r= 0·76–0·96. Main shoots contributed about 81% of the total grain yield and 19% came from T1 and T2 tillers.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 83 , Issue 1 , August 1974 , pp. 117 - 124
Copyright
Copyright © Cambridge University Press 1974

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References

REFERENCES

Bremner, P. M. (1969 b). Growth and yield of three varieties of wheat, with particular reference to the influence of unproductive tillers. The Journal of Agricultural Science, Cambridge 72, 281–7.CrossRefGoogle Scholar
Bunting, A. H. & Drennan, D. S. H. (1966). Some aspects of the morphology and physiology of cereals in the vegetative phase. In The Growth of Cereals and Grasses, Proceedings of the Twelfth Easter School in Agricultural Science, University of Nottingham, 1965 (ed. Milthorpe and Ivins). London: Butterworths.Google Scholar
Cannell, R. Q. (1969 a). The tillering pattern in barley varieties. I. Production, survival and contribution to yield by component tillers. The Journal of Agricultural Science, Cambridge 72, 405–22.CrossRefGoogle Scholar
Cannell, R. Q. (1969 b). The tillering pattern in barley varieties. The effect of temperature, light intensity and daylength on the frequency of occurrence of the coleoptile node and second tillers in barley. The Journal of Agricultural Science, Cambridge 72, 423–35.CrossRefGoogle Scholar
Cock, J. H. (1969). The physiology of yield of semidwarf and standard winter wheats. Ph.D. Thesis, University of Reading.Google Scholar
Donald, C. M. (1968). The breeding of crop ideotypes. Euphytica. 17, 385–403.CrossRefGoogle Scholar
Friend, D. J. C. (1965). Tillering and leaf production in wheat as affected by temperature and light intensity. Canadian Journal of Botany 43, 1063–76.CrossRefGoogle Scholar
Friend, D. J. C. (1966). The effects of light and temperature on the growth of cereals. In The Growth of Cereals and Grasses, Proceedings of the Twelfth Easter School in Agricultural Science, University of Nottingham, 1965 (ed. Milthorpe, and Ivins, ). London: Butterworths.Google Scholar
Friend, D. J. C., Helson, V. A., Fisher, J. E. (1962). Leaf growth in Marquis wheat, as regulated by temperature, light intensity and daylength. Canadian Journal of Botany 40, 1299–1311.Google Scholar
Ishag, H. M. & Taha, M. B. (1974). Yield and yield components of Mediterranean and Mexican wheat cultivars. (In preparation.)Google Scholar
Langer, R. H. M. (1966). Mineral nutrition of grasses and cereals. In The Growth of Cereals and Grasses. Proceedings of the Twelfth Easter School in Agricultural Science, University of Nottingham, 1965 (ed. Milthorpe, and Ivins, ). London: Butterworths.Google Scholar
Lupton, F. G. H. & Ali, A. M. (1966). Studies on photosynthesis in the ear of wheat. Annals of Applied Biology 57, 281–6.Google Scholar
Macdowall, F. D. H. (1973). Growth kinetics of Marquis wheat. Morphogenic dependence. Canadian Journal of Botany 51, 1259–65.Google Scholar
Rawson, H. M. (1971). Tillering patterns in wheat with special reference to the shoot at the coleoptile node. Australian Journal of Biological Science 24, 829–41.Google Scholar
Simpson, G. M. (1968). Association between grain yield per plant and photosynthetic area above the flag leaf node in wheat. Canadian Journal of Plant Sciences 48, 253–60.Google Scholar
Thorne, G. N. (1962). Survival of tillers and distribution of dry matter between ear and shoot of barley varieties. Annals of Botany 26, 37–54.Google Scholar