Assessment of drought tolerance in seedlings of sugar beet (Beta vulgaris L.) cultivars using inorganic and organic solutes accumulation criteria

doi:10.1080/00380768.2014.921579

	Assessment of drought tolerance in seedlings of sugar beet (Beta vulgaris L.) cultivars using inorganic and organic solutes accumulation criteria
	Wu, Guo-Qiang 1; Wang, Chun-Mei 2; Su, Yan-Yan 1; Zhang, Jing-Jing 1; Feng, Rui-Jun 1; Liang, Na 1
刊名	SOIL SCIENCE AND PLANT NUTRITION
	2014
卷号	60 期号:4 页码:565-576
关键词	sugar beet osmotic adjustment drought stress cation soluble sugars proline
ISSN号	0038-0768
DOI	10.1080/00380768.2014.921579
英文摘要	Drought is a major environmental factor limiting the production of crops. Drought tolerance of sugar beet (Beta vulgaris L.) cultivars in terms of growth and inorganic and organic solute accumulation was analyzed in this study. Four-week-old seedlings of three cultivars, "Gantang7", "SD13829" and "ST21916", differing in drought tolerance, were treated with different degrees of drought stress. Plant shoots and roots were harvested at 5 d after stress and subjected to analysis. Drought significantly reduced shoot fresh weight and water content in the three cultivars, though the least reduction was found in "ST21916". Either decrease or no change in sodium (Na+) and potassium (K+) concentrations was observed in the three cultivars as an effect of drought, whereas a higher root Na+ and a lower root K+ concentration was noted in "Gantang7". Root calcium (Ca2+) concentration significantly increased in "Gantang7" exposed to moderate and severe drought. Severe drought also caused a significant increase in the proline level in "SD13829" but not in "Gantang7" and "ST21916". Under drought stress, soluble sugar concentrations significantly increased in both "Gantang7" and "SD13829" whilst remaining unchanged in "ST21916". It is clear that Na+, K+ and soluble sugars are major contributors to osmotic adjustment (OA), while Ca2+ and proline have minor contributions to OA in all three cultivars. According to our comprehensive assessment of drought tolerance, it is shown that "ST21916" is more tolerant to drought than the other two cultivars. Therefore, our results suggest that "ST21916" may be more suitable for planting in arid and semi-arid regions.
资助项目	Natural Science Foundation of Gansu Province, China[1208RJZA238]
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000342318400013
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34532]
专题	生命科学与工程学院
通讯作者	Wu, Guo-Qiang
作者单位	1.Lanzhou Univ Technol, Sch Life Sci & Engn, Lanzhou 730050, Peoples R China 2.CAAS, Lanzhou Inst Husb & Pharmaceut Sci, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Wu, Guo-Qiang,Wang, Chun-Mei,Su, Yan-Yan,et al. Assessment of drought tolerance in seedlings of sugar beet (Beta vulgaris L.) cultivars using inorganic and organic solutes accumulation criteria[J]. SOIL SCIENCE AND PLANT NUTRITION,2014,60(4):565-576.
APA	Wu, Guo-Qiang,Wang, Chun-Mei,Su, Yan-Yan,Zhang, Jing-Jing,Feng, Rui-Jun,&Liang, Na.(2014).Assessment of drought tolerance in seedlings of sugar beet (Beta vulgaris L.) cultivars using inorganic and organic solutes accumulation criteria.SOIL SCIENCE AND PLANT NUTRITION,60(4),565-576.
MLA	Wu, Guo-Qiang,et al."Assessment of drought tolerance in seedlings of sugar beet (Beta vulgaris L.) cultivars using inorganic and organic solutes accumulation criteria".SOIL SCIENCE AND PLANT NUTRITION 60.4(2014):565-576.