Available Online: http://www.ejpau.media.pl/volume19/issue4/abs-03.html
FIELD ASSESSMENT OF REACTION AND YIELD OF SOME BARLEY GENOTYPES UNDER NATURAL INOCULUMS OF RHYNCHOSPORIUM COMMUNE
Kaivan Karimi1, Mohammad S. Khaledian2
1 Young Researchers and Elite Club, Qorveh Branch, Islamic Azad University, Qorveh, Iran
2 Department of Agronomy, Agricultural and Natural Resources Research Center of Kurdistan, Sanandaj, Iran
Barley scald caused by Rhynchosporium commune is known as one of the most deleterious diseases on barley all over the world, especially in the Middle East including Iran. Barley genotypes screening against this disease is an efficient way to find the more tolerant pedigrees. For this purpose, a field experiment was designed at Ghamlou station in the Kurdistan province of Iran during 2013 and 2014, and reaction of twenty four lines and commercial cultivars were evaluated under natural inoculums of R. commune. Based on our results, the genotypes had different reactions compared with each other during both years of experiment. Disease severity rate in 2013 was higher than in 2014, while reactions of some genotypes showed a positive correlation. All genotypes in 2014 had higher yield than in 2013. It appears that different reaction of the genotypes during these both years was in association with meteorological fluctuations such as rainfall rate. Finding resistant or tolerant genotypes to scald disease and compatible to specific areas along with their extensive cultivation lead to obtain the most adapted and yielding cultivars.
Key words: Hordeum vulgaris, Scald, Disease incidence, Screening.
Young Researchers and Elite Club, Qorveh Branch, Islamic Azad University, Qorveh, Iran
Mohammad S. Khaledian
Department of Agronomy, Agricultural and Natural Resources Research Center of Kurdistan, Sanandaj, Iran
Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.