Paper Details

Study of effects of end-season drought stress on the length of spikes, number of nodes per stalk, and diameter of stalks of irrigated barley lines in moderate regions of kermanshah province

Korosh Fatahi, Sarah Beigzadeh

DOI: https://dx.doi.org/10.12692/ijb/5.6.113-118

Int. J. Biosci. 5(6), 113-118. September, 2014. (PDF)

Abstract:

In 2009-10, a research was done in order to study the effects of late-season drought stress on yield and yield components of irrigated barely lines with 2 factors of genotype and drought stress in the form of split plot test in the format of complete random blocks with 3 repetition in Islamabad-e Gharb Station (Kermanshah province).For 9 levels of lines MBD-85-3 , MBD-85-6, MBD-85-8, MBD-85-14, MB-85-3, MB-85-5,MB-85-18 and 2 control cultivars Yosuf (D5) and Nosrat, drought stress and genotypes were considered as major and minor factors, respectively. Each plot was set at a 12-m2 area ( each ridge 60 cm). Plant density was set at 400 seeds/m2 with 4-5 cm planting depth. Seeding was performed by winter Schneider test seeder with sprinkler irrigation. Soil test determined the amount and type of fertilizer to be used .Results of variance analysis showed that the difference between cultivars in terms of spike length as well as the difference between irrigation levels became significant at 1% level, but variety (cultivar) × irrigation interactions did not became significant . According to the variance analysis results, no significant differences were observed between cultivars in terms of the number of nodes per stalk, between irrigation levels and between cultivar × irrigation interactions. For diameter of stalks, results showed a significant difference at 5% level between cultivars, but not between irrigation levels. However, cultivar × irrigation interactions were significant at 1% level.