The Plant Regulator Soaking Seeds and its Reflections on Growth and Yield Quality of Wheat

A greenhouse pot experiment was carried out during November 2013 to May 2014. Winter wheat grains (Triticum aestivum L.), cultivars Abu-Ghureb and Cham6 were used to investigate the effect of soaking seeds in 300ppm of benzyl adenine (BA) or daminozide solutions for 6 hours before sowing vegetative, yield components, leaf chlorophylls and some chemical constituents of seeds. BA treatment led to significant increases in tiller number plant-1, chlorophyll b, P, dry gluten, N and protein contents of seeds. It also led to significant decreases in number of leaves plant-1. In addition, the number of tillers plant-1, shoots dry weight plant-1, P, N and protein contents of seeds were increased by daminozide treatment, but this caused a significant decrease in the plant height, number of leaves plant-1 and flag leaf area. Number of grains plant-1, weight of 1000 grains and grains yield were significantly increased by both treatments. Cultivar variability was noted for some tested parameters. The tall, N, P content and protein content of Abu-Ghureb cultivar were higher significantly than Sham6. The case was opposite with number of leaves plant-1, flag leaf area, shoots dry weight plant-1, spike length and grain number plant-1

Response of Some Bread Wheat Genotypes (Triticum aestivum L.) to Salinity at Early Growth Stage

This study aimed to detect the salinity harsh influence on germination of Triticum aestivum L. seeds, seedling growth and some physiological defense mechanisms to determine the salt- tolerant genotype. The study conducted as a completely randomized design with 3 replicates for each treatment. Four bread wheat genotypes; Hawler- 2, Azady, Adana, Rabeae were subjected to two irrigation patterns; tape water (control) and 100 mM NaCl (salt stress). The highest percent of germination; 46.77 recorded by Rabeaa genotype. Meanwhile Azady and Rabeaa had highest mean germination time (MGT); 16.71 and 16.03 respectively. Longest root was exhibited by Adena;10.50 cm. while longest shoot represented by Hawler-2; 16.40 cm. Highest dry weight of root was 1.01 g. Root: shoot ratio; 1.63 exhibited by Rabeaa. Hawler- 2 showed minimum chlorophyll a; 0.90 mg/ g. Lowest chlorophyll b and total content observed in Adena; 2.18 and 2.3 mg g-1 respectively. Azady and Rabeaa recorded higher MSI%; 43.3 and 43 % respectively as compared to others. Rabeaa recorded highest water content, proline and sugar content; 22.7, 0.31 and 11.56 mg g-1. Therefore, it could suggest that Rabea and Azady can be successfully grown under 100 mM NaCl saline condition