Date Received: 16-04-2025
Date Accepted: 30-05-2025
Date Published: 30-05-2025
##submissions.doi##: https://doi.org/10.31817/tckhnnvn.2025.23.5.
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Effect of Drought on Growth and Yield of Quinoa (Chenopodium quinoa Willd.) at Flowering Stage
Keywords
Drought tolerance, quinoa, flowering stage, drought tolerant index
Abstract
This study evaluated the effects of drought stress during the flowering stage on the growth and yield of 10 quinoa genotypes originating from different sources. A two-factor experiment, including genotypes (10 quinoa genotypes) and drought treatments (artificial drought for 2 weeks during the flowering stage), was arranged in a randomized complete block design (RCBD) with five replications. The results showed that drought stress during the flowering stage significantly reduced main stem height, number of leaves per main stem, number of primary branches, leaf area, accumulated dry matter, 1000-seed weight, and individual plant yield in most genotypes. However, the degree of impact varied among them. Genotypes G18, G23, and Atlas maintained relatively stable growth and yield under drought conditions, indicating strong adaptability. Genotypes Cahuil, Q4, Lucaboldo, and Isluga exhibited good recovery capacity as evident by enhanced leaf development and dry matter accumulation after the drought period. Conversely, Q1 and Titicaca were the most severely affected, showing pronounced declines across all observed traits. Genotypes G18, G23, and Atlas are proposed as potential materials for breeding programs and for expanding quinoa production under drought-prone conditions.
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