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Comparison of chinoli (Brassica campestris subsp. oleifera × subsp. chinensis) and B. napus oilseed rape using different growth regulators, plant population densities and irrigation treatments

Published online by Cambridge University Press:  27 March 2009

M. S. S. Rao  and
N. J. Mendham
M. S. S. Rao
Affiliation:
Department of Agricultural Science, University of Tasmania, GPO Box 252C, Hobart, Tasmania 7001, Australia
N. J. Mendham
Affiliation:
Department of Agricultural Science, University of Tasmania, GPO Box 252C, Hobart, Tasmania 7001, Australia
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Summary

Experiments were carried out between 1983 and 1987 in a cool but dry environment in Tasmania to evaluate the growth, development and yield of chinoli compared with the Brassica napus cultivar, Marnoo. In 1983/84 chinoli plants became large, with many pods, but then lodged at the stage of peak pod development. Seed yields were less than half those of the B. napus lines and only slightly better than that of B. campestris, ‘Jumbuck’. In subsequent experiments, lodging was either delayed or completely eliminated, either by the application of plant growth regulators, particularly PP333, or by using low populations or late sowing. However, these remedial measures were all associated with lower seed yields. Early flowering before the achievement of adequate plant size and then the setting of a large number of pods resulting in few seeds in each were identified as the main reasons for the low seed yields in chinoli. Irrigation after anthesis increased numbers of seeds/pod and thus gave better seed yields, but still not as high as those of Marnoo.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 117 , Issue 2 , October 1991 , pp. 177 - 187
Copyright
Copyright © Cambridge University Press 1991

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References

REFERENCES

Anon. (1985). Voluntary register of oilseed cultivars in Australia. Rapeseed. Brassica campestris var. silvesiris (Lam.). Briggs, cv. Jumbuck. Journal of Australian Institute of Agricultural Science 51, 301–302.Google Scholar
Daniels, R. W., Scarisbrick, D. H. & Smith, L. J. (1986). Oilseed rape physiology. In Oilseed Rape Scarisbrick, D. H. & Daniels, R. W.), pp. 83–126. London: Collins.Google Scholar
Holliday, R. (1960). Plant population and crop yield. Nature 186, 22–24.CrossRefGoogle Scholar
Mendham, N. J. & Scott, R. K. (1975). The limiting effect of plant size at inflorescence initiation on subsequent growth and yield of oilseed rape (Brassica napus). Journal of Agricultural Science, Cambridge 84, 487–502.Google Scholar
Mendham, N. J., Shipway, P. A. & Scott, R. K. (1981 a). The effects of delayed sowing and weather on growth, development and yield of winter oil-seed rape (Brassica napus). Journal of Agricultural Science, Cambridge 96, 389–416.CrossRefGoogle Scholar
Mendham, N. J., Shipway, P. A. & Scott, R. K. (1981 b). The effects of seed size, autumn nitrogen and plant population density on the response to delayed sowing in winter oil-seed rape (Brassica napus). Journal of Agricultural Science, Cambridge 96, 417–428.Google Scholar
Mendham, N. J., Russell, J. & Buzza, G. C. (1984). The contribution of seed survival to yield in new Australian cultivars of oil-seed rape (Brassica napus). Journal of Agricultural Science, Cambridge 103, 303–316.CrossRefGoogle Scholar
Rao, M. S. S. & Mendham, N. J. (1991). Soil-plant-water relations of oilseed rape (Brassica napus and B. campestris). Journal of Agricultural Science, Cambridge 117, 197–205.Google Scholar
Rao, M. S. S., Mendham, N. J. & Buzza, G. C. (1991). Effect of the apetalous flower character on radiation distribution in the crop canopy, yield and its components in oilseed rape (Brassica napus). Journal of Agricultural Science, Cambridge 117, 189–196.Google Scholar
Thurling, N. (1981). Yield improvement from wide crossing in Brassica campestris. In Proceedings of the Australian Rapeseed Agronomists and Breeders 3rd Research Workshop, Wagga Wagga, N.S.W., Australia. Department of Agriculture, N.S.W.Google Scholar
Yoshida, S. (1972). Physiological aspects of grain yield. Annual Review of Plant Physiology 23, 437–464.Google Scholar