نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه زراعت و اصلاح نباتات، دانشکدگان کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران.
2 سازمان تحقیقات، آموزش و ترویج کشاورزی (AREEO)، موسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In order to optimize the use of water resources in agriculture, the utilization of drought-tolerant species plays a significant role, directly impacting the country’s food and water security. This study was conducted to determine the optimal soil moisture level for achieving maximum yield with efficient water use in several quinoa genotypes. The experiment was carried out during the 2020–2021 growing season at the research farm of the College of Agriculture and Natural Resources, University of Tehran Located in Karaj. A split-plot experiment based on a randomized complete block design with three replications was used. The treatments included four irrigation levels based on cumulative evaporation (90 (control), 110, 130, and 150 mm) and ten quinoa genotypes (Titicaca, Giza1, Atlas, Blanka, Kancolla, Marangani, Q1, Q3, Q12 and Q29). The interaction between irrigation level and genotype was significant for all measured traits. Under normal irrigation conditions, genotypes Kancolla, Titicaca, Q12, and Giza1 produced the highest grain yields, while Atlas exhibited the greatest yield reduction (68%) and ranked lowest. Genotype Q1, with the lowest percentage yield reduction, was identified as the most drought-tolerant genotype. The best irrigation level for Q1, achieving the highest water use efficiency (WUE) of 2.20 kg/m³, was at 150 mm evaporation. Results indicated that an optimal balance between high yield and WUE was achieved by genotype Kancolla at 90 mm, Titicaca at 110 mm, and Q1 at 130 and 150 mm evaporation levels.
کلیدواژهها [English]
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