الفهرس 
INTRODUCTION
Field experimentOnly 14 pages are availabe for public view
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Abstract
from the precedent results and discussion the following conclusions were reached:
The obtained results of the three studied seasons (2011-2014) showed significantly differences among six tested broad bean genotypes in most of the studied characters.
Roomy 5 genotype showed higher field emergence percentage and taller plants. Also, it was the best genotype with respect to total green pods yield and its components (number and weight of green seeds per plant).
Roomy 101 genotype differed from all the studied genotypes in later flowering, lower number of tillers per plant, lower green pods (width and weight) as well as lower total green pods yield per feddan, but this genotype (Roomy 101) was the highest in T.S.S.
Some of the tested vegetative and reproductive traits were affected by planting density. Increasing plant density from one seed/hill up to three seeds/hill decreased field emergence percentage.
Plants sown with three seeds/hill gave the highest plant height and lowest number of tillers per plant.
Length, width and green pod weight increased with increasing plant density, but with insignificant differences.
The lowest plant density produced the maximum number and weight of green pods and green seed weight per plant, and vice versa. The decrease in these characters with increasing plant density (three seeds/hill) could be attributed to the increased competition among plants for growth factors, which finally reduced the number of tillers per plant.
Increasing in total green pods yield observed at three seeds/hill increased number of plants per unit area and not to the increased production of pods per plant.
With respect to the storability of green pods of the test broad bean genotypes, the faster in loss of weight and quality percentage during storage at room temperature in broad bean is due to water losses.
The fresh and dry matter gain in root and shoot systems of the test bean genotypes was generally decreased as the soil salinity level increased. The adverse concentration effects of the salinizing agent (NaCl) were clearly exhibited by the test genotypes treated with the highest applied salt levels (120 and 200 mM).
The distorted fresh and dry matter yields of root and shoot systems achieved at the highest salinity levels were partially or completely alleviated as salinity levels decreased. In addition, the effectiveness of the different salinity levels varied in the different plant organs. At certain NaCl levels no appreciable difference in the biomass gain were manifested at lower and higher levels.
The data herein obtained reveal that root and shoot lengths of the salt-stressed genotypes were generally attenuated as salinity increased and the successive increases in salinity level did not reduce the root lengths as severely as the shoot ones.
The decrements in the number of leaves, internodes and tillers due to highest salt levels were partially or completely alleviated at the lower salinity ones.
The effectiveness of the salinizing agent in attenuating or enhancing the number of flower production by the test genotypes varied at the different salinity levels.
Pronounced reductions in chlorophyll a and carotenoids biosynthesis were induced by the high levels of the applied salt. Moreover, decreasing the level of the applied salt partially alleviated the deleterious effects achieved at the higher salt levels.
As for chlorophyll b, various responses were achieved at the different levels of the applied salinizing agent.
The lowest crop yield (weight and number of pods and seeds ) were consistently achieved by plants grown at the highest NaC1 levels while at lower salinity ones the adverse effects on crop yield were partially or completely alleviated. Furthermore, some beneficial effects on crop yield were manifested at the lower salt levels, a response which reflects the tolerance of the test genotypes to the lower levels of the applied salinizing agent.
The data herein obtained indicate considerable differences in the production of proline by the different organs (roots and shoots) of the test bean genotypes, due to the various applied levels of salinity.
The different responses, displayed by roots and shoots of the test genotypes at various salinization levels may be taken as a further evidence of the deeply involvement of the salinizing agent supply in modifying certain sites of cellular metabolism leading to, overproduction, or impairment of proline and other compatible osmolytes.