Cra fta~Brandner SJ. P hospho rus nutr ition influence o n star ch and sucr ose accumulatio n,and act ivities of A DP glucose pyr ophosphor ylase and sucr ose~pho sphate sy nthase dur ing the gr ain filling period in soybean. Plant Phy siol(Bethesda),1992,98(3): 1133~1138.
[11]
Peaslee DF,M o ss DN,Phot osynthesis in Kand M gdeficient maize(Zea mays L,)leaves. So il Sci Am er Pr oc,1966,30: 220~223.
[12]
V alle BL,T he metallobiochemistr y o f zinc enzymes. A dv Enzymo l,1984,56: 284~430.