Effect of Mn Deficiency on Carbon and Nitrogen Metabolism of Different Genotypes Seedlings in Maize (<i>Zea mays</i> L.).

Effect of Mn Deficiency on Leaf Dry Weight and Leaf Phenotype In a two-way ANOVA ( Table 1 ), it was found that genotypes, MnSO 4 concentration, and genotypes × MnSO 4 concentration interactions had highly significant effects on shoot dry weight, root dry weight, and plant height of maize seedlings ( p < 0.01), except for the genotype × MnSO 4 concentration interaction, which had no significant effect on root dry weight ( p > 0.05).

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Unlike in the sensitive genotype, the leaf soluble sugars, sucrose, NSC, and SPS, as well as the SS activities of B73, showed an increasing trend in total Mn deficiency ( Figure 5 ), increasing by 20.05%, 17.19%, 8.8%, 75.18%, and 36.69% ( p < 0.05), respectively, and reaching the significant level.

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The above indicators of Mo17 reached a peak at 10% Mn concentration and demonstrated a decreasing trend with a further increase in Mn deficiency ( Figure 5 ).

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