Role of calcium in micronutrient stresses of plants
作者:
JohnC. Brown,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1979)
卷期:
Volume 10,
issue 1-2
页码: 459-472
ISSN:0010-3624
年代: 1979
DOI:10.1080/00103627909366908
出版商: Taylor & Francis Group
关键词: Liming acid soils;Cu‐deficiency;Fe‐deficiency;Mn‐deficiency;differential uptake of Ca by plant genotypes
数据来源: Taylor
摘要:
When calcium carbonate was added to an acid soil, it induced or alleviated a micronutrient stress, depending on the genotype and the soil. Calcium carbonate added to Richland soil (pH 5.2) corrected Mn‐toxicity symptoms in Bragg soybean (Glycine maxL.) Merr.) but induced B‐deficiency symptoms in Coker 71–5089 cotton (Gossypium hirsutumL.). The latter did not develop Mn‐toxicity symptoms. Absorption and transport of Ca may enhance P uptake and induce Fe‐deficiency symptoms on Fe‐inefficient genotypes. Cereals differ in their response to Cu stress and the degree to which Cu deficiency depresses the transport of Ca to top leaves affects the expression of the Cu‐deficiency symptoms (withertip). Manganese‐efficient oat genotypes took up more Ca than Mn‐inefficient oats. In contrast, Fe‐efficient oat genotypes took up less Ca than Fe‐inefficient oats. Calcium is universally important as a competing metal ion in chelation and transport of elements in plants and the differential uptake of Ca may affect use of these micronutrients.
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