Effect of calcium on nutrient uptake and accumulation in Camellia oleifera under aluminum stress

doi:10.14088/j.cnki.issn0439-8114.2022.22.003

Abstract

Abstract: To explore the effect of calcium on nutrient element uptake and accumulation in Camellia oleifera under aluminum stress, a comparative experiment with different concentrations of calcium and aluminum treatments was set up with common Camellia oleifera variety Xianglin XCL 15 cuttings as the material to determine the contents of nine essential nutrients, including aluminum, calcium, nitrogen, phosphorus, potassium and magnesium, in Camellia oleifera roots, stems and leaves. The results showed that aluminum stress significantly increased the aluminum content and root copper content of all organs of Camellia oleifera and inhibited the uptake and accumulation of calcium, nitrogen, magnesium, zinc and potassium, which decreased by 24.05%~54.93%, 30.2%~47.0%, 34.15%~47.7%, 31.48%~55.93% and 6.70%~30.05%, respectively, compared with the control treatment. There was no significant change in phosphorus content and stem and leaf iron content in all organs of Camellia oleifera under aluminum stress, but the root iron content decreased significantly. The application of exogenous calcium significantly reduced the aluminum content of Camellia oleifera and inhibited the accumulation of aluminum uptake. With the increase of exogenous calcium concentration, the contents of calcium, nitrogen, phosphorus, potassium and magnesium gradually increased, especially the most significant effect under 3.0 mmol/L calcium treatment, while the high concentration of calcium （5.0 mmol/L） inhibited the accumulation of nitrogen and zinc and the accumulation of copper in the root system of Camellia oleifera. In conclusion, the application of the moderate amount of exogenous calcium could promote the uptake and accumulation of nutrient elements in Camellia oleifera.

Key words: Camellia oleifera, aluminum stress, calcium, nutrient elements

CLC Number:

S512

HUANG Li-yuan, HU Guang-wei, WANG Qiong, LIU Zhen. Effect of calcium on nutrient uptake and accumulation in Camellia oleifera under aluminum stress[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(22): 19-24.

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