不同基因型玉米磷素分配及子粒植酸磷积累的研究

对不同基因型玉米磷素分配及子粒植酸磷积累进行研究。结果表明,不同杂交种玉米各营养器官磷素分配与子粒植酸磷浓度及其积累量存在基因型差异,郑单958和浚单20相对植酸磷浓度低,分别为1.57、1.59 g/kg。子粒中植酸磷占总磷的比例平均值为56%,其中,永玉2号最高,约为62%;浚单20和郑单958较低,约为49%。不同基因型玉米各部位磷浓度、积累量与子粒植酸磷浓度完熟期存在相关性,其上部叶、下部叶、苞叶、穗轴、子粒的磷浓度和茎秆、上部叶、下部叶、苞叶、穗轴、子粒的磷积累量与子粒的植酸磷积累量均达显著水平(P0.05)。

Study on Phosphorus and Seed Phytic Acid Phosphorus Distribution and Accumulation of Different Genotypes Maize

Different genotype maize phosphorus distribution and grain phytic acid phosphorus accumulation were study. The results showed that there were differences between the maize organs phosphorus distribution and grain phytic acid phosphorus content and accumulation of different maize hybrids. The concentration of Zhengdan 958 and Xundan 20 was the lowest, 1.57 g/kg and 1.59 g/kg, respectively. In the actual production, we can expand the low phytate content of corn varieties. The average ratio of AP-P to total P in grain was 56 percent; the Yongyu 2 was the highest which was 62 percent; Xundan20 and Zhengdan958 were the lowest which was 49 percent. There was correlation relationship between the different maize genotypes various parts of phosphorus concentration and accumulation and grain phytic acid phosphorus concentration during the ripe period. The phosphorus concentration of upper-leave, lower-leave, husk-leave, cob and seed and the phosphorus accumulation of stem and upper-leave, lower-leave, husk-leave, cob and seed were significant levels(P<0.05).