STABILITY PARAMETERS FOR YIELD AND ITS COMPONENTS IN WHITE MUSTARD (Brassica alba, L.) IN DIFFERENT ENVIRONMENTS | ||||
| Journal of Plant Production | ||||
| Article 11, Volume 30, Issue 11, November 2005, Page 6653-6667 PDF (4.53 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2005.237747 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| T. H.S. Abou EI-Nasr,; M. M. Ibrahim; K. A. Aboud | ||||
| Genetics and Cytology Dept. National Research Center (NRC), Dokki, Cairo, Egypt. | ||||
| Abstract | ||||
| Stability parameters of 20 genotypes of white mustard were evaluated under four environments in two locations and assessed using three different stability methods. These method were Eberhart and Russell (1966), Perkins and Jinks (1968) and Freeman and Perkins (1971). The investigation included five characters (plant height, number of primary branches, number of secondary branches, number of pods on main branch and seed yield). Results revealed significant genotype x environment interactions for all studied traits and the response to environmental changes of each genotype differed as indicated by M.S. pooled deviation and heterogeneity items. Wider ranges of regression coefficient values were observed from the studied stability methods suggesting possibility of selection for specific genotypes patterns. Four genotypes (6, 10,12, 13)were most stable for studied characters in four environments. Stability for yield components such as seed yield per plant should be considered when breeding for yield stability in white mustard. Comparing the different stability methods revealed that Eberha"rt & Russell and Freeman & Perkins were of equal importance in assessing stability and cleared that there were significant genetic background variations between white mustard genotypes and response to environmental conditions. Genetic characterization of white mustard genotypes by SOS-PAGE analysis of protein fractions revealed that the differences in the banding profile pattern in the altered environment (clay vs. sandy soils). Moreover, some other protein bands were also found ir. the sandy soil more than in the clay soil. | ||||
| Keywords | ||||
| Selection; White Mustard; Genotype-environment interaction; Stability measurements | ||||
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