BREEDING VALUE OF CHICKPEA ACCESSIONS IN TERMS OF DROUGHT TOLERANCE IN THE CONDITIONS OF THE EASTERN FOREST-STEPPE OF UKRAINE
Journal Title: Наукові доповіді НУБіП України - Year 2017, Vol 4, Issue 4
Abstract
Chickpea is a drought-tolerant grain legume, but drought-induced loss of yield can range from 30 to 100%. Evaluation of accessions for tolerance to this factor is of great importance for further breeding. To study the diversity of collection accessions for response to drought, we applied an index approach that is widely used by foreign scientists. Using seven the most common ones: drought susceptibility index, tolerance index, mean productivity, yield stability index, yield index, stress-tolerance index and the geometric mean of productivity, we evaluated 89 accessions from the basic chickpea collection of the National Center for Plant Genetic Resources of Ukraine (NCPGRU). We determined the breeding value of these accessions in terms of drought tolerance. To confirm the data obtained, in subsequent years (2008-2015), a model population of chickpea accessions, which represented accessions with highly-expressed important breeding and economic characteristics, was evaluated. Evaluation of the collection chickpea accessions for the seven indices of drought tolerance found that desi accessions had higher drought tolerance than kabuli accessions. We identified 20 sources of drought tolerance for the Eastern Forest-Steppe Ukraine: ten of each morphotype. These accessions can be involved in breeding programs for on creating competitive chickpea varieties, which will be adapted to the conditions of the Eastern Forest-Steppe of Ukraine. The references of drought tolerance were selected: for kabuli type – variety ‘Dniprovskyi Vysokoroslyi’ (Ukraine); for desi - ‘Krasnokutskiy 123’ (Russia).
Authors and Affiliations
N. O. Vus, L. N. Kobyzeva, O. M. Besuhla
Keywords
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