Abstract
Chickpea is a legume member that grows in most parts of the world. It is negatively affected by abiotic and biotic factors like drought and fungal diseases respectively. One of the most important soil-borne pathogens affecting chickpeas is Fusarium oxysporum f.sp. ciceris. Its population dynamics in the soil is affected by fluctuation in soil water content and host. Now, drought is common in most areas of the world due to global warming. Drought stress decrease quality and quantity of the chickpeas also, particularly where soil-borne pathogens are the chief stress factor for plants. The use of both drought-tolerant and disease-resistant cultivars may be the only option for cost-effective yield production. In this study, we screened the seeds of chickpea genotypes WR-315, JG-62, C-104, JG-74, CPS-1, BG-212, ANNIGERI, CHAFFA, BG-215, UC-27, ILC-82, and K-850 for drought tolerance at increasing polyethylene glycol (PEG) concentrations (0-, 5-, 7.5-, 10-, 15-, 20-, 25-, 30- and 50%) to create drought stress conditions at different severities. The performances of genotypes that were previously tested in Foc resistance/susceptibility studies were assessed in terms of percentage of germination, radicle and hypocotyl length, germination energy, germination rate index, mean germination time, and vigor index. We determined the genotypes of C-104, CPS-1, and WR-315 as drought-susceptible, moderately drought-tolerant, and drought-tolerant, respectively. We then elucidated the stress levels of selected genotypes (8-day-old seedlings) at 0-15% PEG conditions via measuring proline and malondialdehyde (MDA) contents. Our findings showed that genotypes exhibiting drought tolerance were positively correlated with the Foc resistance and that the responses of chickpea genotypes infected with Foc under drought conditions are the next step to assess the combined stress on chickpea genotypes.