A comprehensive characterization of agronomic and end-use quality phenotypes across a quinoa world core collection.

Autor:	Craine EB; The Land Institute, Salina, KS, United States., Davies A; Department of Chemistry, University of Wyoming, Laramie, WY, United States., Packer D; Sustainable Seed Systems Laboratory, Department of Crop and Soil Sciences, Washington State University, Pullman, WA, United States., Miller ND; Department of Botany, University of Wisconsin-Madison, Madison, WI, United States., Schmöckel SM; Department Physiology of Yield Stability, Institute of Crop Science, Faculty of Agriculture, University of Hohenheim, Stuttgart, Germany., Spalding EP; Department of Botany, University of Wisconsin-Madison, Madison, WI, United States., Tester M; Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia., Murphy KM; Department of Chemistry, University of Wyoming, Laramie, WY, United States.
Jazyk:	angličtina
Zdroj:	Frontiers in plant science [Front Plant Sci] 2023 Feb 16; Vol. 14, pp. 1101547. Date of Electronic Publication: 2023 Feb 16 (Print Publication: 2023).
DOI:	10.3389/fpls.2023.1101547
Abstrakt:	Quinoa ( Chenopodium quinoa Willd.), a pseudocereal with high protein quality originating from the Andean region of South America, has broad genetic variation and adaptability to diverse agroecological conditions, contributing to the potential to serve as a global keystone protein crop in a changing climate. However, the germplasm resources currently available to facilitate quinoa expansion worldwide are restricted to a small portion of quinoa's total genetic diversity, in part because of day-length sensitivity and issues related to seed sovereignty. This study aimed to characterize phenotypic relationships and variation within a quinoa world core collection. The 360 accessions were planted in a randomized complete block design with four replicates in each of two greenhouses in Pullman, WA during the summer of 2018. Phenological stages, plant height, and inflorescence characteristics were recorded. Seed yield, composition, thousand seed weight, nutritional composition, shape, size, and color were measured using a high-throughput phenotyping pipeline. Considerable variation existed among the germplasm. Crude protein content ranged from 11.24% to 17.81% (fixed at 14% moisture). We found that protein content was negatively correlated with yield and positively correlated with total amino acid content and days to harvest. Mean essential amino acids values met adult daily requirements but not leucine and lysine infant requirements. Yield was positively correlated with thousand seed weight and seed area, and negatively correlated with ash content and days to harvest. The accessions clustered into four groups, with one-group representing useful accessions for long-day breeding programs. The results of this study establish a practical resource for plant breeders to leverage as they strategically develop germplasm in support of the global expansion of quinoa. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2023 Craine, Davies, Packer, Miller, Schmöckel, Spalding, Tester and Murphy.)
Databáze:	MEDLINE
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