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Development of an Aus-Derived Nested Association Mapping (Aus-NAM) Population in Rice.

ABSTRACT: A genetic resource for studying genetic architecture of agronomic traits and environmental adaptation is essential for crop improvements. Here, we report the development of a rice nested association mapping population (aus-NAM) using 7 aus varieties as diversity donors and T65 as the common parent. Aus-NAM showed broad phenotypic variations. To test whether aus-NAM was useful for quantitative trait loci (QTL) mapping, known flowering genes (Ehd1, Hd1, and Ghd7) in rice were characterized using single-family QTL mapping, joint QTL mapping, and the methods based on genome-wide association study (GWAS). Ehd1 was detected in all the seven families and all the methods. On the other hand, Hd1 and Ghd7 were detected in some families, and joint QTL mapping and GWAS-based methods resulted in weaker and uncertain peaks. Overall, the high allelic variations in aus-NAM provide a valuable genetic resource for the rice community.

SUBMITTER: Kitony JK 

PROVIDER: S-EPMC8234321 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Development of an <i>Aus</i>-Derived Nested Association Mapping (<i>Aus</i>-NAM) Population in Rice.

Kitony Justine K JK   Sunohara Hidehiko H   Tasaki Mikako M   Mori Jun-Ichi JI   Shimazu Akihisa A   Reyes Vincent P VP   Yasui Hideshi H   Yamagata Yoshiyuki Y   Yoshimura Atsushi A   Yamasaki Masanori M   Nishiuchi Shunsaku S   Doi Kazuyuki K  

Plants (Basel, Switzerland) 20210621 6

A genetic resource for studying genetic architecture of agronomic traits and environmental adaptation is essential for crop improvements. Here, we report the development of a rice nested association mapping population (<i>aus</i>-NAM) using 7 <i>aus</i> varieties as diversity donors and T65 as the common parent. <i>Aus</i>-NAM showed broad phenotypic variations. To test whether <i>aus</i>-NAM was useful for quantitative trait loci (QTL) mapping, known flowering genes (<i>Ehd1</i>, <i>Hd1</i>, an  ...[more]

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