PDF(Pubmed)
Abstract：
Mineral element accumulation in plants is influenced by soil conditions and varietal factors. We investigated the dynamic accumulation of 12 elements in straw at the flowering stage and in grains at the mature stage in eight rice varieties with different genetic backgrounds (Japonica, Indica, and admixture) and flowering times (early, middle, and late) grown in soil with various pH levels. In straw, Cd, As, Mn, Zn, Ca, Mg, and Cu accumulation was influenced by both soil pH and varietal factors, whereas P, Mo, and K accumulation was influenced by pH, and Fe and Ni accumulation was affected by varietal factors. In grains, Cd, As, Mn, Cu, Ni, Mo, Ca, and Mg accumulation was influenced by both pH and varietal factors, whereas Zn, Fe, and P accumulation was affected by varietal factors, and K accumulation was not altered. Only As, Mn, Ca and Mg showed similar trends in the straw and grains, whereas the pH responses of Zn, P, K, and Ni differed between them. pH and flowering time had synergistic effects on Cd, Zn, and Mn in straw and on Cd, Ni, Mo, and Mn in grains. Soil pH is a major factor influencing mineral uptake in rice straw and grains, and genetic factors, flowering stage factors, and their interaction with soil pH contribute in a combined manner.
摘要：
植物中矿质元素的积累受土壤条件和品种因素的影响。我们研究了8个具有不同遗传背景的水稻品种（Japonica，Indica,和混合物)和开花时间(早期，中间,和后期）在不同pH值的土壤中生长。在稻草里，Cd,As,Mn,Zn,Ca,Mg,铜的积累受土壤pH值和品种因素的影响，而P,Mo,钾的积累受pH的影响，Fe和Ni的积累受品种因素的影响。在谷物中，Cd,As,Mn,Cu,Ni,Mo,Ca,镁的积累受pH和品种因素的影响，而Zn,Fe,磷的积累受品种因素的影响，钾的积累没有改变。只有As,Mn,Ca和Mg在秸秆和谷物中显示出相似的趋势，而锌的pH响应，P,K,和Ni之间的区别。pH和开花时间对Cd,Zn,锰在稻草和镉上，Ni,Mo,和锰在谷物中。土壤pH是影响稻草和谷物中矿物质吸收的主要因素，和遗传因素，开花期因素，它们与土壤pH值的相互作用以组合方式发挥作用。
