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Agronomy
Volume 13
Issue 7
10.3390/agronomy13071880
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Article

Comprehensive Evaluation of Ecological Functional Traits and Screening of Key Indicators of Leymus chinensis Germplasm Resources from Northern China and Mongolia

by
Na Liu
1,2,
Fenghui Guo
3,
Bin Li
1,2,
Zeyao Jing
1,2,
Wuyun Bai
4 and
Xiangyang Hou
1,2,*
1
College of Grassland Science, Shanxi Agricultural University, Taigu 030801, China
2
Key Laboratory of Model Innovation in Forage Production Efficiency, Ministry of Agriculture and Rural Affairs, Taigu 030801, China
3
Industrial Crop Research Institute, Shanxi Agricultural University, Fenyang 032200, China
4
College of Chemistry and Environmental Science, Inner Mongolia Normal University, Hohhot 010022, China
*
Author to whom correspondence should be addressed.
Agronomy 2023, 13(7), 1880; https://doi.org/10.3390/agronomy13071880
Submission received: 14 May 2023 / Revised: 2 July 2023 / Accepted: 12 July 2023 / Published: 17 July 2023
(This article belongs to the Special Issue Climate Change and Grassland Ecosystem Management)
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Abstract

Leymus chinensis is important for ecological restoration and stock farming in Eurasia. In the context of climate change, excavating L. chinensis germplasm resources with excellent ecological functional traits is important to resist grassland degradation and promote the restoration of degraded grassland ecosystems. In this study, we used 42 L. chinensis germplasm resources (LC01–LC42) from different geographical sources to perform a multidimensional comprehensive evaluation of drought tolerance, rhizome space expansion, and soil improvement abilities. (1) LC07, LC15, LC18, and LC19 exhibited excellent ecological functional traits and could be used in breeding for ecological restoration. They were mainly from eastern and central Mongolia and central Inner Mongolia. (2) Principal component analysis showed that eight principal components with eigenvalues ≥1 were extracted from 26 traits of L. chinensis. The cumulative contribution rate was 80.551%. (3) There was a significant positive correlation between the F value and longitude and a significant negative correlation of the F value with latitude. L. chinensis germplasms from high longitudes and low altitudes may exhibit better comprehensive performance. (4) Plant height, leaf number, tiller number, malonaldehyde, chlorophyll content, dry weight on the ground, maximum one-direction extended distance, and organic matter can be used as key indices to comprehensively evaluate L. chinensis germplasm resources.
Keywords: global climate change; ecological restoration; index screening; drought tolerance; rhizome space expansion; soil improvement ability global climate change; ecological restoration; index screening; drought tolerance; rhizome space expansion; soil improvement ability

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MDPI and ACS Style

Liu, N.; Guo, F.; Li, B.; Jing, Z.; Bai, W.; Hou, X. Comprehensive Evaluation of Ecological Functional Traits and Screening of Key Indicators of Leymus chinensis Germplasm Resources from Northern China and Mongolia. Agronomy 2023, 13, 1880. https://doi.org/10.3390/agronomy13071880

AMA Style

Liu N, Guo F, Li B, Jing Z, Bai W, Hou X. Comprehensive Evaluation of Ecological Functional Traits and Screening of Key Indicators of Leymus chinensis Germplasm Resources from Northern China and Mongolia. Agronomy. 2023; 13(7):1880. https://doi.org/10.3390/agronomy13071880

Chicago/Turabian Style

Liu, Na, Fenghui Guo, Bin Li, Zeyao Jing, Wuyun Bai, and Xiangyang Hou. 2023. "Comprehensive Evaluation of Ecological Functional Traits and Screening of Key Indicators of Leymus chinensis Germplasm Resources from Northern China and Mongolia" Agronomy 13, no. 7: 1880. https://doi.org/10.3390/agronomy13071880

APA Style

Liu, N., Guo, F., Li, B., Jing, Z., Bai, W., & Hou, X. (2023). Comprehensive Evaluation of Ecological Functional Traits and Screening of Key Indicators of Leymus chinensis Germplasm Resources from Northern China and Mongolia. Agronomy, 13(7), 1880. https://doi.org/10.3390/agronomy13071880

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