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2Haramaya University, School of Graduate Studies, College of Agriculture and Environmental Sciences, Dire Dawa, Ethiopia
Ascochyta blight (Didymella rabiei) is economical imperative foliar diseases limiting the yield and yield components that associated traits of (Cicer arietinium L.) worldwide. The purpose of the study is to evaluate the acquiesced chickpea genotypes from International Center for Agricultural Research in the Dry Areas (ICARDA) in Morocco. The experimental was designed as an optimized completed randomized block design during two consecutive growing seasons in 2018 to 2019 at Alem Tena and Dhera under natural conditions in hot spot area. The disease assessment was recorded on 1-9 based rating scale. The results revealed that a statistically significant difference (P<0.05) on Ascochyta blight resistance due to the genotypes in two growing seasons except in 2019 at Alem Tena. From overall reflection due to genotypes and location seven genotypes were resistant. But there are no significant interaction effects by genotype by location in 2018 growing season. Thus, those genotypes are: FLIP-11-153C, FLIP-11-155C, Flip-10-369C, Flip-10-371 and FLIP-11-81C were durable sources of resistance and highly stable in 2018 and 2019 growing season over locations and years. This implies genotypes gets genotypic differences for their level of reactions and it suggested that clear evidences that ample of source of variability among the genotypes in the disease resistance. The genotypes which given a considerable level of resistance are suggested to be screened at reproductive stage to confirm resistance level. Therefore, the resistant source found in these findings can be utilized in chickpea improvement program for the parental materials to develop cultivar and their heritability will be determined.
Ascochyta blight,Ascochyta rabiei,Chickpea,Durable resistance,Genetics severity