Characterization and association mapping for drought adaptation in Ethiopian sorghum ( Sorghum bicolor (L.) Moench) germ
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RESEARCH ARTICLES
Characterization and association mapping for drought adaptation in Ethiopian sorghum (Sorghum bicolor (L.) Moench) germplasm Alemu Tebeje1 · Kassahun Bantte2 · Temesgen Matiwos2 · Andrew Borrell3 Received: 18 September 2019 / Accepted: 15 September 2020 © Society for Plant Research 2020
Abstract Knowledge of drought related traits and their mechanisms of drought adaptation are the key component in selecting genotypes that withstand the effects of drought in sorghum. The objectives of this study were to assess genetic variability among sorghum germplasm, to map QTL associated with root and shoot traits, and to identify tightly linked SSR markers. The experiment was carried out at Jimma University under greenhouse condition. One hundred thirty-six sorghum genotypes were characterized for twelve traits using a high throughput root phenotyping platform in a randomized complete block design with three replications. Among these genotypes, 108 of them were used for studying population structure and trait-marker association analysis using 39 SSR markers. The analysis of variance indicated that highly significant difference (P
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