| Popis: |
Environmental changes have become a phenomenon that deserves a continuous assessment for their impact on the quality and productivity of crop genotypes worldwide, especially in the Middle East. This is required whether for the development of agriculture sector or economic profits. Many crop plants have diverse adaptive mechanisms to tolerate or resist a biotic stress condition. Thus, this study aimed to evaluate differential responses of five quinoa (Chenopodium quinoa Willd.) genotypes in twelve environments (three irrigation levels and two locations during two growing seasons (2016/2017 and 2017/2018). Drought is a biotic stress that has been studied in quinoa but the assessment of drought tolerance indices and environmental variation of quinoa genotypes across environments has not been studied satisfactorily. So, in the present work, evaluation of yield reliability was done depending on drought tolerance indices and stability of tested genotypes as estimated by grain yield. The results showed that Line 14 of the tested genotypes excelled in the grain yield and stability parameters across different environments, whereas Chipaya genotype showed the best performance under high drought stress conditions. Yield reliability of the tested genotypes was estimated to combine relatively high yield under drought stress conditions and response to improved agricultural conditions and high production in favorable environments. |
