Effect of Spraying with Proline on Two Cultivars of Potato Under Salt Stress
Keywords:Proline, Burren, Sodium Chloride, Riviera, cultivars
During the fall season on September 15, 2019, the experiment was carried out on one of the farms belonging to a farmer in the Al-Tahmaziya area, the Hilla city, Babylon province. This experiment included a study of the effect of four concentrations of NaCl (without addition, 4, 8,10 dsm-1) and proline spraying at a concentration of (0, 200, 250 ppm) on two potato cultivars(Burren and Riviera). The experiment was conducted according to the Split split-plot design with three replicates, where the main plot occupied the cultivars. As for the proline subplot, the sub-sub- the plot was occupied by NaCl, and the results were The cultivars showed significant differences between them in effect on the studied traits, where the Burren cultivar was significantly excelled and gave the highest values for the traits of the number of tubers 7.63 tubers.plant -1, the fresh weight of the tubers was 601.25 g, while the Riviera cultivar excelled and gave the highest values for root length traits 40.75 cm, leaf sodium, and a chloride content (3.87 and 3.43%), respectively. The treatment of proline spraying with a concentration of 250 ppm was significantly excelled and gave the highest values of root length traits 40.06 cm, the number of tubers 8.61 tubers. Plant -1, while the concentration 200 ppm significantly excelled and gave the highest value of the fresh weight of tubers, amounted to 680.53 g. The results of the experiment also showed that adding sodium chloride to irrigation water harmed the root growth traits and the quantitative and qualitative traits, especially the concentration of 10 dsm-1, where it gave the lowest values for most of the studied traits in comparison with the control treatment that gave the highest values. The triple interaction treatment consisting of (Burren cultivar + proline spraying at a concentration of 250 ppm + 4 dsm -1) was significantly excelled and gave the highest value in the quality of the number of tubers 11.90 tubers.plant-1, and the treatment of (Burren + Proline spraying at a concentration of 250 ppm + 4 dsm -1) was significantly excelled and gave the highest value for the fresh weight of tuber 846.10 g.
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