Water Deficit Research Papers - Academia.edu (original) (raw)

The Experiment was conducted in the experimental farm of Horticulture and Landscape Department, Agriculture college of Diyala University, Iraq, during spring season 2016. The objective of the experiment was to investigate the interaction of three factors, first factor: three tomato Genotypes namely {Bobcat (V 1), Finenss (V 2) and Hadeer (V 3)}, second factor: Irrigation levels, control treatment (100 %) depletion of 50 % of field capacity and 50 % of the amount water of the control. Three levels of perlite (P 0 , 5 % and 10 %) as a volumetric percentage of soil. The experiments were arranged in a Strip Split Plot Design factor with three replications Randomized Completely Block design (RCBD) used. Results statistically analyzed by applying (SAS) program. The results comparison done by applying multi-Duncan Test under 0.05 probability. Results showed: 1-Bobcat genotype had significant differences in root length (least length), fruit weight average, height fruit weight, yield per plant, total yield and total soluble solid (T.S.S) in fruit juice. Results were 52.06 cm, 179.8 g, 340.06 g, 5.079 kg per plant 135.43 ton hc-1 and 6.26 %, respectively. Finenss Genotype had superior in plant high, leaves number per plant, flower number per cluster, earliness of maturation, fruits number per plant and percentage of total acidity in fruits juice, results were 103.86 cm, 78.39 leaf plant-1 , 5.99 flower per cluster, 65.78 day, 40.45 fruits per plant and 0.769 % vegetative mas. Hadeer genotype had superiority in dry matter weight and flower set percentage, results were 21.38 % and 54.24 % respectively. b 2. Irrigated plants with full irrigation had superiority in low proline concentration, less of root length, greatest of root dry weight and flower number per cluster, results were 2.341 mg g-1 , 52.55 cm, 42.55 g and 5.64 Flower per cluster respectively. Plants irrigated with 50 % (partially) of irrigation (I 2) had superiority in the leaves number, earliness of flowering in 50 % of total flowers per experimental unit, earliness of maturity and pH of fruit juice, results were 63.15 leaf, 21.56 days, 67.41 days and 4.574. No significant differences found between irrigation levels for all parameters, that's means the reduction of irrigation amount to half had no negative affect aforementioned parameters. 3. Plants grown in the soil with 10 % perlite had superiority in leaves number, total leaf area plant, less of proline concentration and heights fruit weight, results were 65.89 leaf plant-1 , 185.13 dcm 2 , 2.078 mg g-1 and 273.78 g fruit-1. Plants grown in soil with 5 % perlite had superiority in fruit firmness and fruit total acidity percent, were 9.01 kg cm-2 and 0.778 % respectively. Addition of perlite with both levels P 1 and P 2 (no significant differences found between both) result in significant differences in comparison to control treatment in plant height, stem diameter, total branches number, dry Weight percent of vegetative growth, chlorophyll content, less of root length, root dry Weight, flowers number per cluster, flowers set percentage, fruits number per plants, fruit weight average, yield per plant and total yield, that's led to conclude, 5 % of perlite result increasing studied parameters. c 4. Interactions of three factors (genotypes, perlite and irrigation levels) had significant differences in all studied parameters. V 2 I 2 P 2 treatment had superiority in plant length, branches number, leaves number, fruit number per plant and vitamin C content, results were 114.20 cm, 35.33 branch plant-1 , 95.67 leaf plant-1 , 48.33 fruit plant-1 and 20.17 mg 100 ml-1. V 2 I 1 P 2 treatments had superiority in stem diameter, leaves area and less content of proline, results were 1.80 cm, 209.86 dcm 2 plant-1 and