Stability analysis and molecular evaluation of new garden pea genotypes in Egypt | ||||
| Arab Journal of Biotechnology | ||||
| Volume 20, Issue 1, June 2017, Page 71-86 PDF (1.09 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/arjb.2017.428502 | ||||
 View on SCiNiTO | ||||
| Abstract | ||||
| Thirteen new promising lines in addition to two commercial cultivars of garden pea (Pisum sativum L.) were evaluated under six environments in Lower Egypt (two seasons of 2013/2014 and 2014/2015, in three locations). Data were recorded for plant length, no. of days to flowering, pod length, pod weight, no. of seeds/pod, 100-seeds weight, shelling percentage and total green yield. The linear response of genotypes to environments was highly significant for all studied traits. The mean squares due to Environment + (Genotypes × Environment) was significant for all studied traits. The results of stability analysis indicated that the genotypes G1, G5, G6 and G13, most stable genotypes, gave the maximum total green yield overall the six studied environments and were adapted to environments for total green yield and most studied traits. Also, the genotype G10 can be considered promising line as early and short stem length cultivar due to its performance and stability for total green yield and most studied traits. The genetic similarity coefficients among garden pea genotypes evaluated by SCOT markers varied from 68.4% to 99.6%, indicating high level of genetic diversity existing among the pea genotypes which could be valuable for pea breeding in the future. The dendrogram generated with hierarchical UPGMA (Un-weighted Pair Group Method with Arithmetic Averages) cluster analysis of the Jaccard's similarity coefficient matrices revealed two major clusters. | ||||
| Keywords | ||||
| Garden peas; Stability; Regression coefficient; Genotype × Environment; SCOT markers; Genetic similarity | ||||
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