Fig. 3From: Seasonal and diurnal patterns of non-structural carbohydrates in source and sink tissues in field maizeDiurnal changes of net photosynthesis rates in the newly expanded leaves at the periods of 7th leaf expanded (a) and 13th leaf expanded (b) and the ear leaves at 28 days after pollination (c) for maize hybrids. * and ** indicate significant levels at P ≤ 0.05 and P ≤ 0.01, respectivelyBack to article page