Comparison of Sunn pest, Eurygaster integriceps Put., resistance in barley in Neyshabour

Subject Areas : Plant Pests

isa jabaleh ¹ , roya Askari ² , majid Taherian ³

1 - Assistant Professor of Department of Plant Protection, ACECR -Khorasan Razavi, Kashmar Higher Education Institute, Kashmar, Iran
2 - MSc Student at Agriculture entomology, Department of Plant Protection, ACECR -Khorasan Razavi, Kashmar Higher Education Institute, Kashmar, Iran
3 - Department of Agronomic and Horticulture Crops Research, Khorasan-e Razavi Agricultural and Natural Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Mashhad, Iran.

Received: 2020-06-18 Accepted : 2020-06-18 Published : 2019-02-20

Keywords: Yield, genotype, tolerance index, Eurygaster integriceps,

Abstract :

Barley is one of the world's main sources of nutrients for human and animal, and E. integriceps is one of the most important pests reducing its yield. This study was conducted on different barley genotypes to identify the genotypes that are resistant to Sunn pest. The study was a randomized complete block design with three replications that was conducted in 2016 and 2017 in Neyshabour Agricultural Research Center. The results showed that the highest number of E. integriceps was recorded in genotype 3 and the lowest number of E. integriceps was related to genotypes 2 and 6. Genotype 13, with the important indices of grain yield under non-stress condition (Yp) and genotype 10, with the important indices of grain yield under stress condition (Ys) in the region, were identified to have high yield potential and low sensitivity to E. integriceps. Yp had a positive and significant correlation with the mean of productivity (MP), geometric mean (GMP), and stress tolerance index (STI). YS had a positive and significant correlation with all indices except stress susceptibility index (SSI) and tolerance index (TOL). Therefore, the MP, GMP, and STI were the only indices that showed a positive and significant correlation with Yp and Ys. In conclusion, based on the results of this study, genotype 20 can be nominated as a E. integriceps-resistant genotype in Neishabour region. Genotype 1 can also be reported as a sensitive genotype to E. integriceps with low yield.