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Open AccessArticle

Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame

1
The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
2
Institute of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
*
Author to whom correspondence should be addressed.
Genes 2020, 11(10), 1221; https://doi.org/10.3390/genes11101221
Received: 30 August 2020 / Revised: 14 October 2020 / Accepted: 14 October 2020 / Published: 18 October 2020
(This article belongs to the Section Plant Genetics and Genomics)
Genetic dissection of yield components and seed mineral-nutrient is crucial for understanding plant physiological and biochemical processes and alleviate nutrient malnutrition. Sesame (Sesamum indicum L.) is an orphan crop that harbors rich allelic repertoire for seed mineral–nutrients. Here, we harness this wide diversity to study the genetic architecture of yield components and seed mineral–nutrients using a core-collection of worldwide genotypes and segregating mapping population. We also tested the association between these traits and the effect of seed nutrients concentration on their bio-accessibility. Wide genetic diversity for yield components and seed mineral–nutrients was found among the core-collection. A high-density linkage map consisting of 19,309 markers was constructed and used for genetic mapping of 84 QTL associated with yield components and 50 QTL for seed minerals. To the best of our knowledge, this is the first report on mineral–nutrients QTL in sesame. Genomic regions with a cluster of overlapping QTL for several morphological and nutritional traits were identified and considered as genomic hotspots. Candidate gene analysis revealed potential functional associations between QTL and corresponding genes, which offers unique opportunities for synchronous improvement of mineral–nutrients. Our findings shed-light on the genetic architecture of yield components, seed mineral–nutrients and their inter- and intra- relationships, which may facilitate future breeding efforts to develop bio-fortified sesame cultivars. View Full-Text
Keywords: bioavailability; biofortification; iron; QTL co-localization; macronutrients; micronutrient; zinc bioavailability; biofortification; iron; QTL co-localization; macronutrients; micronutrient; zinc
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MDPI and ACS Style

Teboul, N.; Gadri, Y.; Berkovich, Z.; Reifen, R.; Peleg, Z. Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame. Genes 2020, 11, 1221.

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