to assess the "Effect Of Saline Irrigation Water On Growth, Nutrients Composition And Yield Of Onion (Allium Cepa L.) Varieties" during the winter, season of 2017-18. The pot experiment comprised four levels of salinity viz., <2.0, 4.0, 6.0 and 8.0 dS m -1 and five different varieties viz., V1-GJWO-3, V2-GJRO-11, V3-Talaj red, V4-Pilli patti and V5-PWF-131 in Factorial Completely Randomized Design with replicated three times. The experimental result revealed that the growth, yield and yield attribute, quality parameters, bio-chemical parameters, nutrient content and nutrient uptake were significantly influenced by the different varieties of onion. The highest plant height (49.33 cm), fresh straw yield (37.03 g), fresh weight of bulb (39.21 g), volume of bulb (25.67 cm 3 ), bulb yield (133.33 g/pot) and quality parameters viz., neck thickness and TSS among different tested varieties of onion.

In 10 x 10 diallel analysis in linseed, additive (D) and dominance (HI and H2) components were found significant for days to flower, days to maturity, plant height, capsules per plant, 500-seeds weight, harvest index and seed oil content. Only dominance components (H) and H2) were significant for number of seeds per capsule and biological yield. The degree of dominance indicated preponderance of additive genetic variance for days to flower and days to maturity, equal importance of both genetic components for 500-seeds weight and seed oil content and greater magnitude of dominance component for rest of the characters. Reciprocal recurrent selection or biparental mating is suggested for improvement of all the characters except seeds per capsule and biological yield.

Genetic analysis of components of variation for seed yield, oil yield and yield components revealed the importance of both additive and non additive type of gene action in the inheritance of all the characters studied. However, preponderance of additive components was observed for phenological traits, viz. days to flower and days to maturity, equal importance of both additive and dominance components for plant height, primary branches per plant, 500-seeds weight and seed oil content, whereas preponderance of dominance component was revealed for number of capsules per plant, seeds per capsule, seed yield per plant, biological yield per plant, harvest index and oil yield per plant. The biparental mating or diallel selective mating is suggested to exploit the genetic components for improvement of the characters studied.

Genetic analysis of seed yield and five yield components as well as oil yield per plant through 10 X 10 diallel excluding reciprocal revealed that all the characters were governed by both additive as well as dominance gene effects, with preponderance of additive gene effect for days to flower; equal importance of both gene effects for days to maturity and with greater magnitude of dominance gene effect for plant height,seeds per capsule, 500 seeds weight, seed yield per plant and oil yield per plant. Asymetrical distribution of increasing and decreasing alleles was noticed for all the traits except seeds per capsule, seed yield and oil yield. More number of dominant genes were present (K/K >1) for days to flower, days to maturity and plant height. The population improvement through reciprocal recurrent selection or biparental mating is suggested for increasing seed and oil yield.

Salinity is one of the most important factor limiting fruit growth and production of several horticultural crops. A pot experiment was undertaken during Rabi 2017-18 at Department of Agricultural Chemistry & Soil Science, JAU, Junagadh in order to investigate the effect of different levels of saline irrigation water on yield and yield attributing characters of tomato (Solanum lycopersicum L.) varieties. The experiment consists of four salinity levels viz., < 2.0, 4.0, 6.0 and 8.0 dS m -1 with four different varieties viz.,V1: GT-6, V2: JT-3, V3: AT-3 and V4: DVRT-2 of tomato. Results reported that saline water treatments significantly reduced the vegetative growth parameters and hence total yield of tomato. The yield and yield attributing characters were also significantly influenced by different tested varieties of tomato and recorded highest yield with V1 (GT-6) variety.