الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
In winter season of year 2001/2002 based on morphological character especially tendril or afila leaf character, earliness, short stems and high yield, individual selection of 240 plants from heterogeneous population, single selected plant was collected separately and stored to the next year. In winter season of 2002/2003 the progeny of each selected plant were sown in rows with proper spacing, progenies were evaluated visually. Forty-eight selected progenies were chosen on the basis of high yield and homogeneity were harvested individually on the dry seed stage to be evaluated in replicated yield trials in the next year. The local pea’s selections were evaluated separately in an experiment and the introductions varieties (Fifteen varieties of peas were obtained from UK) were evaluated in another experiment.
The comparable standards for the first experiment were ”Sohag 1” and the commercial variety ”Lincoln”. The standard varieties for the second experiments were “Sohag 1”, ”Sohag 2”, ”Little Marvel” and ”Lincoln”.
The second experiment had two separate parts for fresh harvested peas and for dry peas, however the first experiment only for dry peas. The experiments were performed in winter seasons of 2003-2004, and 2004-2005, due to environmental stress and insufficient irrigation the blooming stage and plant’s yield were affected in winter seasons of 2003-2004. Hence, it is focused on the experiments in the next season2004-2005. The important characters were recorded for fresh and dry peas i.e. fresh pod length (cm), fresh pod thickness (cm), fresh pod width (cm), the fresh pod weight (g), number of seeds per pod, number of ovules per pod. The filling of fresh pod, Seed set percentage, weight of 100 fresh seeds (g), sizing the green shelled peas (seed size < 7.5mm%, seed size 7.5 - 8.4 mm%, seed size 8.5- 10 mm% and seed size > 10mm% of total green seed yield), early fresh pods yield kg/fed, total fresh pods yield kg/fed, total fresh seeds yield kg/fed, shell out percentage for fresh pods, weight of 100 dry seeds (g), dry pods yield kg/fed, dry seeds yield kg/fed and shell out percentage for dry pods. The last four characters were recorded in both experiments also estimation of genetic parameters i.e. genotypic and phenotypic variance, phenotypic and genotypic coefficient of variation, broad sense heritability, the expected genetic advance and genetic advance as percent of the mean in both of them too.
The obtained results of the present investigation could be summarized as follows:
Among different pea genotypes in the first experiment the general performance of the tested genotypes for the studied characters showed that line 160, line 177, line 149, line 153, Sohag 1, line 220 and line 120, showed best results for most of the growth and yield parameters, also three from these genotypes (line 153, line 177 and Sohag 1) showed minimum score in lodging, they scored (1), i.e., completely upright or erect which suitable for mechanical growing and harvesting. Therefore, these field pea genotypes can be considered promising genotypes for cultivar development as new varieties to recommend for growers of Middle Egypt region on the basis of better growth and dry yield performance. This for dry pea’s production spacing studies must be performed for the suitable spacing.
A recommendation to plant breeders to continue their efforts on studying more important characters influencing on yield and quality of these genotypes like dehiscent pods character and resistance to diseases.
Concerning the second experiment results showed that among different pea genotypes the main crop variety “Balmoral” and the early variety “Jaguar”, showed best results for most of the growth and yield parameters, also the results from large yield experiment supporting this finding, furthermore the seeds for these two promising varieties which obtained from the large yield experiment were used by other researchers and producers to evaluate them in different locations in Egypt like, Cairo, Giza, Dakahlia, Kafr El-sheikh, Alexandria, Beni Suef, Assiut, Sohag and New Valley, and these varieties showed great adaptability and great performance too. So, “Balmoral” and “Jaguar” varieties are recommended for growers in Egypt on the basis of better growth, fresh and dry yield performance.