干旱区生态环境知识资源中心(Arid): The Alkali Tolerance of Broomcorn Millet (Panicum miliaceum L.) at the Germination and Seedling Stage: The Case of 296 Broomcorn Millet Genotypes

Arid

DOI	10.3389/fpls.2021.711429
	The Alkali Tolerance of Broomcorn Millet (Panicum miliaceum L.) at the Germination and Seedling Stage: The Case of 296 Broomcorn Millet Genotypes
	Ma, Qian; Wu, Caoyang; Liang, Shihan; Yuan, Yuhao; Liu, Chunjuan; Liu, Jiajia; Feng, Baili
通讯作者	Feng, BL (corresponding author), Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Yangling, Shaanxi, Peoples R China.
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2021
卷号	12
英文摘要	Broomcorn millet (BM), one of the earliest domesticated cereal crops originating in northern China, can tolerate extreme conditions, such as drought and high temperatures, which are prevalent in saline-alkali, arid, and barren landscapes. However, its adaptive mechanism to alkali stress is yet to be comprehensively understood. In this study, 80 and 40 mM standard alkali stress concentrations were used to, respectively, evaluate the alkali tolerance at the germination and seedling stages of 296 BM genotypes. Principal component analysis (PCA), Pearson's correlation analysis, and F-value comprehensive analysis were performed on the germination parameters (germination potential, germination index, germination rate, vigor index, root length/weight, sprout length/weight, and alkali damage rate). Based on their respective F-values, the BM genotypes were divided into five categories ranging from highly alkali resistant to alkali sensitive. To study the response of seedlings to alkaline stress, we investigated the phenotypic parameters (plant height, green leaf area, biomass, and root structure) of 111 genotypes from the above five categories. Combining the parameters of alkali tolerance at the germination and seedling stages, these 111 genotypes were further subdivided into three groups with different alkali tolerances. Variations in physiological responses of the different alkali-tolerant genotypes were further investigated for antioxidant enzyme activity, soluble substances, malondialdehyde (MDA) content, electrolyte leakage rate, and leaf structure. Compared with alkali-sensitive genotypes, alkali-tolerant genotypes had high antioxidant enzyme activity and soluble osmolyte content, low MDA content and electrolyte leakage rate, and a more complete stomata structure. Taken together, this study provides a comprehensive and reliable method for evaluating alkali tolerance and will contribute to the improvement and restoration of saline-alkaline soils by BM.
英文关键词	alkali tolerance genotypic variation phenotype antioxidant enzymes soluble osmolytes cell membrane broomcorn millet
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000698835600001
WOS关键词	SALT-STRESS ; PHYSIOLOGICAL-RESPONSES ; OXIDATIVE STRESS ; MALUS-HALLIANA ; LEAVES ; PLANT ; PHOTOSYNTHESIS ; CADMIUM ; GROWTH
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368519
作者单位	[Ma, Qian; Wu, Caoyang; Liang, Shihan; Yuan, Yuhao; Liu, Chunjuan; Liu, Jiajia; Feng, Baili] Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ma, Qian,Wu, Caoyang,Liang, Shihan,et al. The Alkali Tolerance of Broomcorn Millet (Panicum miliaceum L.) at the Germination and Seedling Stage: The Case of 296 Broomcorn Millet Genotypes[J]. 西北农林科技大学,2021,12.
APA	Ma, Qian.,Wu, Caoyang.,Liang, Shihan.,Yuan, Yuhao.,Liu, Chunjuan.,...&Feng, Baili.(2021).The Alkali Tolerance of Broomcorn Millet (Panicum miliaceum L.) at the Germination and Seedling Stage: The Case of 296 Broomcorn Millet Genotypes.FRONTIERS IN PLANT SCIENCE,12.
MLA	Ma, Qian,et al."The Alkali Tolerance of Broomcorn Millet (Panicum miliaceum L.) at the Germination and Seedling Stage: The Case of 296 Broomcorn Millet Genotypes".FRONTIERS IN PLANT SCIENCE 12(2021).