Phenotyping and a genome-wide association study of elite lines of pearl millet.

Autor: Kambara K; Asian Research Center for Bioresource and Environmental Sciences (ARC-BRES), Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Midori-cho, Nishitokyo-shi, Tokyo 188-0002, Japan., Gupta SK; International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, Telangana State, India., Takano T; Asian Research Center for Bioresource and Environmental Sciences (ARC-BRES), Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Midori-cho, Nishitokyo-shi, Tokyo 188-0002, Japan., Tsugama D; Asian Research Center for Bioresource and Environmental Sciences (ARC-BRES), Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Midori-cho, Nishitokyo-shi, Tokyo 188-0002, Japan.
Jazyk: angličtina
Zdroj: Breeding science [Breed Sci] 2024 Jun; Vol. 74 (3), pp. 240-246. Date of Electronic Publication: 2024 Jul 05.
DOI: 10.1270/jsbbs.23082
Abstrakt: Pearl millet ( Pennisetum glaucum (L.) R. BR.) is a cereal crop mainly grown in India and sub-Saharan Africa. In pearl millet, genes and genomic regions associated with traits are largely unknown. Pearl millet parental lines bred at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) are useful for the production and breeding of pearl millet. However, the phenotypic diversity of these lines has not been fully evaluated. In this study, 16 traits of 107 of those parental lines were assessed with field trials in Japan, and a genome-wide association study (GWAS) was performed using these phenotypic data to identify the genomic regions and genes associated with those traits. The GWAS revealed genomic regions associated with culm height and pigmentation of the shoot basal part (PS). The genomic region associated with PS contained a homolog of PHENYLALANINE AMMONIA LYASE 2 ( PAL2 ), a gene involved in anthocyanin accumulation in Arabidopsis thaliana . The PAL2 homolog can be a candidate for a gene involved in regulating PS in pearl millet. These results provide a better understanding of the phenotypic diversity of pearl millet and its genetic background.
(Copyright © 2024 by JAPANESE SOCIETY OF BREEDING.)
Databáze: MEDLINE
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