Abstract
For sustainable agricultural production, besides drought, plant resistance to irrigation water and soil salinity should be investigated. Researchers mostly focused on salinity and drought resistance of common species (wheat, barley, maize etc.). However, number of studies on chickpea with various uses is quite limited. In present study, 11 chickpea varieties were subjected to germination tests under different electrical conductivity of irrigation water salinity (ECi) conditions to identify irrigation water salinity resistant and sensitive varieties. In germination tests, besides control treatment (0 dS/m), five different ECi levels (6, 8 10, 12 and 16 dS/m) were used in germination solution. Sodium Absorption Ratio (SAR) of saline waters were adjusted to be below 3. GGE biplot method was used for visual assessment of genotype response to saline irrigation waters. Threshold salinity value for germination was identified as 12 dS/m based on germination ratios and seedling dry weights, 8 dS/m based on seedling stem lengths and 10 dS/m based on seedling root lengths. Based on germination ratios and seedling dry weights, Azkan cultivar was identified as the most resistant and Cagatay cultivar was identified as the most sensitive cultivar to irrigation water salinity.
Highlights
Chickpea is used in human nutrition and animal feeding in various parts of the world
Decreasing germination ratios were observed with increasing irrigation water salinity levels (Table 2)
Except for one genotype (G8), germination was observed in all genotypes at 16 dS/m electrical conductivity (ECi) level
Summary
Chickpea is used in human nutrition and animal feeding in various parts of the world. Soil salinity induces osmotic stress by increasing both the accumulation of toxic concentration of Na and Cl ions and the prevention of uptake of essential nutrients such as K, Ca and NO3 (Munns 2002; OkhovatianArdakani et al 2010; Peykanpour et al 2016). Such negative impacts of salinity alter soil flora and fauna, impairs germination and mergence and reduce yield and quality. Natural supply of sufficient quantity and quality irrigation water is getting more difficult every day and water quality has become more important problem than water supply
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