摘要
通过盆栽试验研究了落花生(Arachis hypogaea L.)对硒元素的生物富集作用。结果表明:随着生长发育期的推进,落花生对硒的生物累积作用呈动态变化,表现在植株体内硒的含量、硒元素累积进程及其贮量上。硒在植株内的累积以下针期为转折点,呈前轻后重之势,全株中55％的硒是结荚后累积的,下针期前硒以叶片为累积贮存中心,其后以荚果为中心,硒在植株内趋向于分布在植株生长旺盛的器官。成熟收获后,植株不同器官的贮量以果仁>叶>果壳>茎>根,含量分布为果仁>根>果壳>茎>叶。
Pot experiment was conducted to study the Se bioaccumulation in peanut (Arachis hy-pogaea L.) .The results are as follows: 1) The Se content, process of bioaccumulation and reserves in peanut all showed dynamic changes with plant growth. 2) Peanut could accumulate more Se after needling stage compared with the early stages, 55 % of total Se was enriched after fruiting. 3) Se tended to distribute in the most actively growing organs at every growth stage. Before needling stage leaf was the main organ of Se accumulation and storage, but after that peanut pods became the main Se-accumulating and storing organ. At maturity, the total Se reserves in different parts of peanut followed the order: kernel > leaf > shell > stem > root, while the Se content in different organs had a trend of kernel > root > shell > stem > leaf.
基金
国家自然科学基金
关键词
花生
器官
硒
吸收
累积
Se, Peanut, Uptake, Accumulation, Dynamics
