干旱区生态环境知识资源中心(Arid): Response of broomcorn millet (Panicum miliaceum L.) genotypes from semiarid regions of China to salt stress

Arid

	Response of broomcorn millet (Panicum miliaceum L.) genotypes from semiarid regions of China to salt stress
	Liu Minxuan; Qiao Zhijun; Zhang Shuang; Wang Yinyue; Lu Ping
来源期刊	The Crop Journal
ISSN	2095-5421
出版年	2015
卷号	3 期号:1 页码:57-66
英文摘要	Salt tolerance of crops is becoming more and more important, owing to the constant increase of salinity in arid and semi-arid regions. Broomcorn millet (Panicum miliaceum L.), generally considered tolerant to salinity, can be an alternative crop for salt affected areas. To assess genotypic variation for vegetative-stage salinity tolerance, 195 broomcorn millet accessions from a core collection were evaluated for germination percentage, shoot length, and root length during germination in 8 mL of deionized water (control) or 8 mL of a 120 mmol L~(-1) salt solution (treatment). Six genotypes with different levels of salt tolerance were selected based on the growth parameters and ion concentrations in plant at the seedling stage and used for confirmation of the initial salinity response. Substantial variation for salinity tolerance was found on the basis of salt damage index [(germination percentage under control - germination percentage under salinity) / germination percentage under control * 100, SDI] and 39 accessions exhibited strong salt tolerance with SDI lower than 20%. The salt tolerance performance of the genotypes was generally consistent across experiments. In the seedling growth study, seedling number, root length and belowground biomass were adversely affected (showing more than 70%, 50%, and 32% reduction, respectively) in sensitive genotypes compared to tolerant genotypes (35%, 31%, and 3% reduction, respectively) under 160 mmol L~(-1) NaCl treatment. In general, whole-plant salinity tolerance was associated with increased Na~+ concentration and Na~+/ K~+ ratio, and salt-tolerant genotypes often had higher root and lower shoot Na~+ concentration than sensitive ones. Na~+ concentration in root was closely related to salt tolerance and may be considered as a selection criterion for screening salt tolerance of broomcorn millet at the seedling or vegetative stages.
英文关键词	Salinity tolerance Genetic variation Ion response Broomcorn millet
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5396907
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335480
作者单位	Liu Minxuan, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.; Zhang Shuang, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.; Wang Yinyue, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.; Lu Ping, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.; Qiao Zhijun, Institute of Genetic Resources, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi 030000, China.
推荐引用方式 GB/T 7714	Liu Minxuan,Qiao Zhijun,Zhang Shuang,et al. Response of broomcorn millet (Panicum miliaceum L.) genotypes from semiarid regions of China to salt stress[J],2015,3(1):57-66.
APA	Liu Minxuan,Qiao Zhijun,Zhang Shuang,Wang Yinyue,&Lu Ping.(2015).Response of broomcorn millet (Panicum miliaceum L.) genotypes from semiarid regions of China to salt stress.The Crop Journal,3(1),57-66.
MLA	Liu Minxuan,et al."Response of broomcorn millet (Panicum miliaceum L.) genotypes from semiarid regions of China to salt stress".The Crop Journal 3.1(2015):57-66.