الفهرس 
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Abstract
This study aimed to study how to increase the adaptation of tomato plants to grow at hot weather conditions of summer seasons.
The plants in the nurse were subjected either to drought
conditions by prohibiting water or by irrigation it with saline water
as the concentration of 100 mM. After transplanting, plants were
foliar sprayed by Purshade or Prolina at 5, 10 cm3/L.
Data recorded were relevant to vegetative growth, flowering
and fruit setting, chemical composition of different plant parts as
well as fruit quality and fruit yield.
Results could be summarized as follows:
1-Growth
1.1. Root length:
Drought and saline water irrigation positively affected root
length. Purshade and prolina spraying showed, in general, significant
increase in root length.
1.2. plant height:
Drought treatments generally gave the highest plant height.
Purshade at both tested concentrations achieved the highest plant
height.
1.3. Number of leaves:
Both saline water irrigation or exposing transplants to drought
gave superior records in number of leaves. Prolina and purshade
exerted, in general, significant increase in number of leaves.
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Summary
1.4. Number of branches:
Drought and salinity reduced plant height and thus
encouraged the branching of plants. Purshade at both tested
concentrations showed superior records.
1.5. Leaves fresh and dry weights:
Drought and saline water irrigation gave the highest leaves
fresh and dry weights. Prolina at the lowest concentration and
purshade at the highest concentration gave the highest record in
leaves fresh and dry weights.
1.6. Branches fresh and dry weights:
Saline water irrigation of plants in the nurse exhibited
superior records in branches fresh and dry weights. Purshade at both
studied concentrations and prolina at the lowest concentration
attained superior records in both fresh and dry weights.
1.7. Roots fresh and dry weights:
Drought treatments at first sampling date of the first season
and saline water at the two studied seasons achieved superior records
in fresh and dry weights. Purshade and prolina at both concentrations
achieved superior record in fresh and dry weight.
1.8. Total plants fresh and dry weights:
Saline water irrigation and drought gave plants with the
highest plant dry weight. Purshade at the highest concentration and
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Summary
prolina at the lowest concentration gave the highest record in both
fresh and dry weights.