School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
*Corresponding authors: e-mail: zxsjf@ujs.edu.cn and ddl@ujs.edu.cn
**Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Institute of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
Online published on 19 October, 2020.
The response of two okra cultivars (Chinese Red (var. Red velvet) and Chinese Green (var. Blondy)) were investigated against four level of salinity i.e., 0.00%, 0.06%, 0.12%, and 0.18% (control, slight, moderateand severe) that were made with equal proportional of NaCl and CaCl2. Salt stress significantly reduced thegermination percentage, germination energy percentage and germination speed. Chinese Red showed toleranceat moderate level of 35% reduction in germination rate but Chinese Green exhibited slight stress with 25%reduction in germination percentage. Speed of germination decreased in both the cultivars that delayed seeds germination. Seedling growth, fresh weight and dry weight were also reduced due to increasing salt stress. Plumule length, radical length, fresh weight and dry weight of Chinese Green were 4.9cm, 1.50cm, 0.31g and0.092g at slight stress, that were higher than Chinese Red, but in moderate stress Chinese Red have bettergrowth than Chinese Green. It was concluded that Chinese Red under these environment stress tolerant tomoderate stress and Chinese Green tolerant to slight stress. This study results can be helpful to utilize salinewater resources to get maximum production.
Abelmoschus esculentus, Germination, Seedling growth, Salt stress
