Gibberellic acid (GA3) enhance seed water uptake, germination and early seedling growth in sugar beet under salt stress.
The study was carried out to assess whether water uptake could be improved in sugar beet seeds and salt tolerance at the germination and early seedling stage by soaking the seeds for 10 h in distilled water (control), 100, 150 and 200 mg L(-1) GA3. Electrical Conductivity (EC) values of the NaCl solution were 0.0 (control), 4.7, 9.4 and 14.1 dS n(-1) NaCl. Priming increased the final germination percentage and the germination rate (1/t 50, where t 50 is the time to 50% of germination) under saline condition. Water uptake of primed seeds also increased significantly with increasing concentration of GA3 as compared to control. Priming also alleviated the adverse effect of salt stress on sugar beet in terms of roots and shoots lengths and fresh weights of plants, roots and shoots.
Jamil
Muhammad
M
Department of Life Resources, College of Agriculture and Life Sciences, Sunchon National University, Suncheon 540-742, Republic of Korea.
Rha
Eui Shik
ES
D027461:Beta vulgaris / Q000187:drug effects* / Q000378:metabolism; D018525:Germination / Q000187:drug effects*; D005875:Gibberellins / Q000494:pharmacology*; D012492:Salts / Q000494:pharmacology*; D036226:Seedlings / Q000187:drug effects* / Q000378:metabolism; D012639:Seeds / Q000187:drug effects* / Q000378:metabolism; D013312:Stress, Physiological; D013997:Time Factors; D014867:Water / Q000378:metabolism*
D005875:Gibberellins; D012492:Salts; D014867:Water; C007842:gibberellic acid