FORMATION OF A WORK CHICKPEA COLLECTION BY ASCOCHYTA BLIGHT TOLERANCE
According to the results of the research of the chickpea collection of the National Center of Plant Genetic Resources of Ukraine in 2005 and 2016, when the epiphytoty of Ascochyta blight were noted. The working collection of chickpea for resistance to Ascochyta blight was formed under provocative field conditions. This collection includes 68 accessions of desi and kabuli chickpea from 19 countries: for 34 samples of each type. The collection is formed on the 1 - 9 disease rating scale. 1 - very low resistance (15 samples: 6-kabuli and 9-desi), 3 - low (8 samples of both morphotypes), 5 - medium (8 and 7 samples, respectively), 7 - high (9 and 5 samples) and 9 - very high (4 and 5 samples). All samples from the formed collection were differentiated within each morphotype in three groups of seed size: large, medium and small. There was analyzed of pedigrees of resistant accessions and was proved their relatively narrow genetic basis and duration of use of stable parental components. The collection included as often used in the world breeding practice samples (ILC 3279) as local accessions. It will allow to expand the genetic base of resistance of new varieties. The collection is submitted for registration to the NCPGR of Ukraine. Varieties Stepnoj 1 and Vysokorosly 30 are registered as donors of resistance to Ascochyta blight.