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Genetic variability and inter-relationship of some quantitative characters in safflower

Published online by Cambridge University Press:  27 March 2009

M. O. Khidir
M. O. Khidir
Affiliation:
Faculty of Agriculture, University of Khartoum, Shambat, Sudan
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Summary

Eighteen varieties of safflower were studied in a randomized block design with five replications. Data on fourteen quantitative characters were recorded. Appreciable variability was displayed by all characters, especially yield and number of heads/plant. The heritability estimates ranged between 65 and 98%.

Seed (achene) yield gave a significant positive genotypic correlation with number of seeds/head, head width, bract width and oil content. The 100-seed weight was significantly negatively correlated with the number of seeds/head and plant height at maturity. The genotypic correlations between yield/plant and four other traits were partitioned into direct and indirect effects. The highest direct positive contribution to yield was given by plant height, which had also a positive indirect effect via number of heads. The direct effect of the number of heads/plant was negative and the indirect effect via head width was positive.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 83 , Issue 2 , October 1974 , pp. 197 - 202
Copyright
Copyright © Cambridge University Press 1974

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References

REFERENCES

Argikar, G. P., Morbad, I. R. & Thobbi, V. V. (1957). The range of variation and correlation of some quantitative characters in Carthamus tinctorius L. Indian Oilseeds Journal 1, 228–34.Google Scholar
Burton, G. W. & de Vane, E. H. (1953). Estimating heritability in tall fescue (Festuca arundinacea L.) from replicated clonal material. Agronomy Journal 45, 478–81.CrossRefGoogle Scholar
Claassen, C. E. (1950). Natural and controlled crossing in safflower, Carthamus tinctorius L. Agronomy Journal 42, 381–84.CrossRefGoogle Scholar
Claassen, C. E., Ekdahl, W. G. & Severson, G. M. (1950). The estimation of oil percentage in safflower seed and the association of oil percentage with hull and nitrogen percentages, seed size and degree of spininess of the plant. Agronomy Journal 42, 478–82.CrossRefGoogle Scholar
Dewey, D. R. & Lu, K. H. (1959). A correlation and path-coefficient analysis of components of crested wheatgrass seed production. Agronomy Journal 51, 515–18.CrossRefGoogle Scholar
El Saeed, E. A. K. (1966). Effects of seed size on oil content and seedling emergence in safflower (Carthamus tinctorius L.) grown in the Sudan. Experimental Agriculture 2, 299–304.CrossRefGoogle Scholar
Ibrahim, G. M. (1964). Annual Research Report, Kenana Research Station, Sudan.Google Scholar
Johnson, H. W., Robinson, H. F. & Comstock, R. E. (1955). Estimates of genetic and environmental variability in soybeans. Agronomy Journal 47, 314–18.CrossRefGoogle Scholar
Miller, P. A., Williams, J. C., Robinson, H. F. & Comstock, R. E. (1958). Estimates of genetic and environmental variances and covariances in Upland cotton and their implications in selection. Agronomy Journal 50, 126–31.CrossRefGoogle Scholar
Wright, S. (1921). Correlation and causation. Journal of Agricultural Research 20, 557–85.Google Scholar