In the present investigation, the first (81) and second (82) selective
generations were produced by selection from Ismailawy sweet melon population, 81
and 82 were planted under the two planting methods drep irrigation and balee. The
genotypic and phenotypic coeffident of variability and the narrow sense heritability
and the expected gain under selection were estimated. Partial and multiple linear
correlations were also calculated between some important traits. The results showed
that the genotypic and phenotypic coefficient of variability were nearly equal for fruit
diameter, fruit shape index and fruit flesh thickness in S1 and for fruit length and fruit
flesh thickness in S2. Narrow sense heritability was high for number of fruits I plant,
total yield I plant and total soluble solids of fruit Highly significant and positive
correlations were detected between number of fruiVplant and total yield/plant, fruit
weight and total soluble solids of flesh, fruit length and fruit flesh thickness.
These results may help in selecting the proper breeding program for
improving Ismailawy sweet melon.