Paper Details

Enhance the allelopathic potential of two rice cultivar (Oryza sativa L.) by foliar application of salicylic acid under salinity stress

Mohammadali Esmaeili,  Ayoub Heidarzade

DOI: https://dx.doi.org/10.12692/ijb/6.4.177-183

Int. J. Biosci. 6(4), 177-183. February, 2015. (PDF)

Abstract:

In order to investigate the effect of salicylic acid under salinity stress as an allelopathy stimulator in rice cultivars a hydroponic and pot experiment was carried out in factorial arrangement. Rice cultivars (Tarom and Neda) were grown under different levels of salinity stress (0, 4dS/m and 8dS/m) until 5 leaf stage, also at the same time the salicylic acid was used as foliar (0, 1% and 2%). The root exudates were collected and used as a growth bio-inhibitor in barnayardgrass pot culture. The highest inhibitory effects on chlorophyll, leaf area, root and nitrogen contents of barnyardgrass was obtain when the SA (%2) + EC (4dS/m) treatment was used (with 38%, 60%, 38% and 37.5% inhibition, respectively). Also, chlorophyll content was closely correlated with nitrogen content. Therefore, it may be possible to recommend that, the foliar application of SA 2% will be suitable for better stand of rice seedlings and more allelopathic potential on barnyardgrass in moderate saline conditions of paddies.