研究成果

World's First Clarification of Genetic Diversity of ‘Hiyuna’, a Traditional Asian Vegetable
― Four subpopulations distributed in India, China, and other countries―

Related Research Program
Food

 

World's First Clarification of Genetic Diversity of ‘Hiyuna’, a Traditional Asian Vegetable
―Four subpopulations distributed in India, China, and other countries―

Main Points

  • Elucidated for the first time in the world, the genetic diversity of 465 species of ‘hiyuna’,  a traditional leafy vegetable in the Asian region
  • Identified 5,638 single nucleotide polymorphism markers necessary for breeding, and created a core collection of 105 accessions

  • Expectations for breeding new ‘hiyuna’ varieties with improved nutritional value, taste, and yield

Overview

JIRCAS, in collaboration with the University of Tsukuba, the World Vegetable Research Center, and the Kazusa DNA Research Institute, has elucidated the genetic diversity of edible amaranth (Amaranthus tricolor L.) also known as ‘hiyuna’ in Japanese, a traditional vegetable in Asian regions, for the first time in the world.

Cultivated in developing regions of Southeast Asia such as Vietnam and Indonesia, ‘hiyuna’ is a highly nutritious crop that is resistant to environmental stress. However, breeding research has been delayed due to low demand in developed countries. In this study, the research group analyzed the genetic diversity of 465 ‘hiyuna’ genetic resources and identified 5,638 single nucleotide polymorphism (SNP) markers in order to establish a breeding platform. A core collection was also created consisting of 105 accessions originating from diverse countries and regions such as India, Bangladesh, and China.

Marker selection breeding using the SNP markers and core collection obtained this time will pave the way for the development of breeding techniques and new varieties to improve nutritional value, eating quality, and yield. It is also expected to contribute to sustainable vegetable production in tropical and subtropical regions.

The research results were published in the electronic edition of the international scientific journal Scientia Horticulturae on September 9, 2022 (JST).

 

Publication

Authors
K Hoshikawa, YP Lin, R Schafleitner, K Shirasawa, S Isobe, DC Nguyen, R Ohsawa, Y Yoshioka
Title
Genetic diversity analysis and core collection construction for Amaranthus tricolor germplasm based on genome-wide single-nucleotide polymorphisms
Journal
Scientia Horticulturae
DOI: https://doi.org/10.1016/j.scienta.2022.111428

For Inquiries

JIRCAS President 
KOYAMA Osamu
Program Director
NAKASHIMA Kazuo
Principal Investigators
HOSHIKAWA Ken (Biological Resources and Post-harvest Division), YOSHIOKA Yosuke (Faculty of Life and Environmental Sciences, University of Tsukuba) and SHIRASAWA Kenta (Kazusa DNA Research Institute)
Press Coordinators
OMORI Keisuke (Head, Information and Public Relations Office, JIRCAS E-mail:koho-jircas@ml.affrc.go.jp) and HIRAOKA Kiriko (Public Relations and Research Promotion Group, Kazusa DNA Research Institute Tel: 0438-52-3930)
 
 
 

'Hiyuna' genetic resources grown at the World Vegetable Center

Accessions exhibit a variety of phenotypes, including leaf color, shape, and height. All 465 accessions are grown at the World Vegetable Center.

Classification and geographic distribution of ‘hiyuna’ genetic resources using SNP markers

Pie charts show subpopulations (Q1-Q4) and percentage of intermediate type lineages for each country/region.