【摘要】 大豆种子中的磷(P)60%～80%以植酸的形式存在,而植酸对于人和单胃动物是一种抗营养因子。本研究采用60Coγ射线辐射诱变,首次在中国大豆资源中创造出籽粒高无机P含量的突变材料LPA-4297和LPA-1216,并对其重要农艺性状作了初步的观察。根据突变体和亲本种子中不同P组分的变化,以及与前人在大豆和其它作物中有关低植酸突变研究所得结果的比较,初步确定LPA-4297为低植酸Ⅰ型(lpa1)、LPA-1216为Ⅱ型(lpa2)突变体。更多还原

【Abstract】 In soybean seed,about 60%-80% phosphorous (P) is stored as phytic acid,which is believed as an important anti-nutrition factor to human being and non-ruminant livestock.In this study,two soybean mutant lines,LPA-4297 and LPA-1216,with high inorganic P in seeds,were induced and isolated for the first time from Chinese soybean germplasm by using 60Co gamma rays irradiation.Preliminary observations on agronomic characters of the mutants in parallel with their parents were also made.Based on the changes of P composition in mutant seeds,and according to similar findings in already known low phytate mutants in crops including soybean,it is considered that the mutation in LPA-4297 is similar to the type1 low phytate mutation (lpa1),and that in LPA-1216 is similar to type 2 mutation (lpa2).更多还原