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Comparison of plant-to-plant variability from F1-hybrid and open-pollinated carrot cultivars

Published online by Cambridge University Press:  27 March 2009

D. Gray  and
Joyce R. A. Steckel
D. Gray
Affiliation:
National Vegetable Research Station, Wellesbourne, Warwick, CV35 9EF
Joyce R. A. Steckel
Affiliation:
National Vegetable Research Station, Wellesbourne, Warwick, CV35 9EF
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Extract

In recent studies of variability in carrot (Umlauf, 1978; Dowker & Gray, 1985) it was concluded that increasing the genetic uniformity of the seed populations did not bring about a detectable reduction in the variability in embryo sizes, the spread of emergence or seedling weight. In these experiments, however, only broad comparisons were possible since the seed sources used were not obtained from crops grown under identical cultural conditions or harvested at the same stage of maturity, both of which affect variability in the subsequent crop (Gray & Steckel, 1983). The purpose of the present experiment was to examine the influence on variability of the greater genetic uniformity of an F1-hybrid compared with an open-pollinated cultivar, when both were sown under identical conditions.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 106 , Issue 1 , February 1986 , pp. 199 - 200
Copyright
Copyright © Cambridge University Press 1986

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References

REFERENCES

Dowker, B. D. & Gray, D. (1985). Variation in embryo size in inbred lines of carrot. Annals of Applied Biology 107, 597–599.Google Scholar
Gray, D. & Steckel, J. R. A. (1983). Seed quality in carrots: the effects of seed crop plant density, harvest date and seed grading on seed and seedling variability. Journal of Horticultural Science 58, 393–401.Google Scholar
Salter, P. J., Currah, I. E. & Fellows, J. R. (1981). Studies on some sources of variation in carrot root weight. Journal of Agricultural Science, Cambridge 96, 549–556.Google Scholar
Umlauf, C. F. (1978). Investigations into the variation of germination properties and emergence characters in size-graded seed lots of carrots (Daucus carota L.) using hybrid seed multiplications and open-pollinated cultivars for comparison. M.Sc. thesis, University of Birmingham, U.K.Google Scholar