IDENTIFICATION OF NEW QTL CONFERRING RESISTANCE TO ANTHRACNOSE (ASCOCHYTA RABIEI) IN A RIL POPULATION OF CHICKPEA

Authors : Arzu YILDIRIM, Abdullah KAHRAMAN, Frederick John MUEHLBAUER, Bahattin TANYOLAC

Pages : 93-99

Doi:10.17557/tjfc.467465

View : 23 | Download : 8

Publication Date : 2018-12-15

Article Type : Research Paper

Abstract :Ascochyta blight insert ignore into journalissuearticles values(AB); is a consistent problem affecting large growing areas of chickpea in all countries where this crop is cultivated. This disease is capable of causing large yield losses under conducive environmental conditions. To characterize the genetics of resistance to AB in chickpea, a population consisting of 77 recombinant inbred lines insert ignore into journalissuearticles values(RILs); derived from an inter-specific cross of Cicer arietinum insert ignore into journalissuearticles values(FLIP84-92C, resistant parent); x Cicer reticulatum Lad. insert ignore into journalissuearticles values(PI 599072, susceptible parent); was used. Each RIL and the parents were inoculated with blight spores by spraying. The RILs were scored for disease reactions under greenhouse conditions at 20 °C in a 12 h photoperiod. A linkage map was constructed using RAPD markers. Eleven linkage groups were obtained, of which three were small. The map spanned 889.1 cM with an average marker density of 10.1 cM. Two QTL were detected on linkage groups 1 and 4, which together explained 31% of the total phenotypic variation for AB resistance. These markers can improve precision of molecular breeding in this population. 
Keywords : Ascochyta blight, chickpea, linkage map, QTL analysis