Correlation between leaf functional traits and yield The contents of chlorophyll a ( R 2 = 0.948 p < 0.01) and b ( R 2 = 0.818 p < 0.01), total chlorophyll ( R 2 = 0.948 p < 0.01), and carotenoids ( R 2 = 0.802 p < 0.01) showed highly significant positive correlations with yield ( Figure 5 ).
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Effects of functional characteristics of prickly ash leaves on yield following increased supply of nitrogen fertilizers.
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