Diallel Analysis of Four Agronomic Traits in Common Wheat
The common wheat cultivars Aköz, Florence, Mentana, Jaral, and Siete Cerros were crossed in 1972 in all possible combinations excluding reciprocals. In 1972–1973 the F1 hybrids and the five parents were field grown at Bornoya in randomized complete blocks. The characters studied were plant height, spike length, 1000-kernel weight, and plant yield. The analysis of data showed that (a) with respect to plant height and 1000-kernel weight all F1 combinations deviated from the corresponding midparental values, (b) for the same characters the GCA variances were significant and the GCA ÷ SCA ratios high, (c) the characters’ plant height, spike length, and 1000-kernel weight were probably controlled by two effective factors each, and (d) plant height had the highest and 1000-kernel weight the lowest heritability (h 2 = 0.66 and h 2 = 0.26, respectively). It was concluded that a desired response to selection could be expected for plant height and 1000-kernel weight.
KeywordsPlant Height Agronomic Trait Recessive Gene Plant Yield Spike Length
Unable to display preview. Download preview PDF.
- Anonymous (1960–1961). Annual Report, Adapazari Experimental Station, Adapazari, Turkey.Google Scholar
- Crumpacker, D. W. and Allard, R. W. (1962). A diallel cross analysis of heading date in wheat. Hilgardia 32(6): 275–318.Google Scholar
- Gökgöl, M. (1954). General foundations of wheat breeding (in Turkish). Karinca Matb. Ankara.Google Scholar
- Griffing, B. (1956). Concept of general and specific combining ability in relation to diallel crossings systems. Austr. J. Biol. Sci. 9: 463–493.Google Scholar
- Hayman, B. L (1954). The theory and analysis of diallel crosses. Genetics 39: 235–244.Google Scholar
- Hayman, B. I. (1963). Notes on diallel-cross theory. Stat. Genet. Plant Breed. 982: 571–578.Google Scholar
- Lupton, F. G. H. (1961). Studies in the breeding of self-pollinating cereals. 3. Further studies in cross prediction. Euphytica 10: 209–224.Google Scholar
- Steel, R. G. D. and Torrie, J. H. 1960. Principles and Procedures of Statistics. McGraw-Hill, New York.Google Scholar
- Whitehouse, R. H. H., Thompson, J. B., and de Valle-Ribeizo, M. A. M. (1958). Studies on the breeding of self-pollinating cereals. 2. The use of diallel cross analysis in yield prediction. Euphytica 7: 147–169.Google Scholar
- Yildirim, M. B. and Manas, O. (1974). A program for the analysis of diallel crosses on an IBM 1130 computer (in Turkish). Bitki 1: 122–127.Google Scholar