Response of Se Stress on the Accumulation of Se and the Absorption of Mineral Elements in Alfalfa

doi:10.7668/hbnxb.2017.02.033

Abstract

Abstract: In order to explore the effect of Se stress on the accumulation of Se and the absorption of other mineral elements in alfalfa.The effect of selenium stress on the accumulation of Se and the absorption of mineral elements in different alfalfa were investigated by pot experiments, including biomass content, translocation factor, tolerance factor,Se accumulation, Se content and mineral elements content in different tissues of Medicago sativa L.. The results showed that the content of Se,tolerance factor, Se accumulation and mineral elements (K,P,Ca,Mg) were gradually increased when the Se stress increased to 100 μmol/L Se,compared with control (non-Se).After exposure to 900 μmol/L Se, Se stress markedly increased the Se accumulation in the different tissues of three alfalfas. However, Se stress markedly decreased the contents of biomass in the different tissues of Medicago sativa cv. Vitoria alfalfa and the root of Medicago sative ssp., and it was markedly decreased the absorption of Zn content. Under different levels of Se stress, Se accumulation and mineral elements (K,P,Mg),compared with other species. Thus, it was concluded that Medicago sativa ssp.had high selenium resistance.

Key words: Selenium accumulation, Medicago sativaL., Mineral element

CLC Number:

S143.7

DAI Huiping, ZHAO Hua, JIA Genliang, CHEN Dejing, ZHANG Xingchang, PEI Jinjin, FENG Baili. Response of Se Stress on the Accumulation of Se and the Absorption of Mineral Elements in Alfalfa[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(2): 226-231. doi: 10.7668/hbnxb.2017.02.033.

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http://www.hbnxb.net/EN/Y2017/V32/I2/226

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