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Phenotypic variation in hypocotyl elongation among elite sand rice (Agriophyllum squarrosum) lines.
Liu, Yujie; Cui, Xiaoyun; Li, Xiaofeng; Ran, Ruilan; Chen, Guoxiong; Zhao, Pengshan.
Afiliação
  • Liu Y; Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences Lanzhou China.
  • Cui X; Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu Province Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences Lanzhou China.
  • Li X; University of Chinese Academy of Sciences Beijing China.
  • Ran R; Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu Province Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences Lanzhou China.
  • Chen G; Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu Province Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences Lanzhou China.
  • Zhao P; University of Chinese Academy of Sciences Beijing China.
Ecol Evol ; 14(8): e70051, 2024 Aug.
Article em En | MEDLINE | ID: mdl-39114161
ABSTRACT
Sand rice (Agriophyllum squarrosum), widely distributed in Central Arid Asia and prevalent in the sand dunes of northern China, presents a promising potential as a climate-resilient crop. The plasticity of hypocotyl growth is the key trait for sand rice to cope with wind erosion and sand burial, ensure seedling emergence, and determine plant architecture. In this study, we assessed the overall hypocotyl phenotype of six sand rice elite lines, which were collected from different regions of northern China, and selected by our group over past decade through common garden trials. Significant phenotypic variations were observed in thousand-seed weight (TSW), seedling emergence percentage, hypocotyl length and diameter, and seedling fresh weight among the lines. The elite line Aerxiang (AEX) exhibited excellent agronomic performance with superior and synchronous emergence, and high survival percentage, distinguishing itself as a prime candidate for further large-scale cultivation. Contrastingly, the lines from the arid regions showed markedly lower performance. Partial Least Squares Path Modeling (PLSPM) was used to assess the impact of seed provenance climate factors, including annual mean temperature (AMT) and annual mean precipitation (AMP), on trait variability among lines. The findings indicate a significant correlation between climate factors and hypocotyl length, highlighting the intricate adaptation of sand rice to local climate. The comprehensive understanding of the mechanisms behind phenotypic variations offers valuable insights for sand rice de novo domestication and innovative germplasm resources, and lays the foundation for ecological restoration in sandy areas.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article