Integrated Cytological, Physiological, and Comparative Transcriptome Profiling Analysis of the Male Sterility Mechanism of 'Xinli No.7' <i>Pear</i> (<i>Pyrus</i> sp.).

During the development of flower buds, the activities of SOD and POD in ‘Xinli No.7’ and ‘Korla Fragrant Pear’ showed a decreasing trend.

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The CAT activity of ‘Xinli No.7’ and ‘Korla Fragrant Pear’ showed a trend of increasing first and then decreasing during the bud development period, and there was a significant difference between the two after March 29 ( Figure 2 G). 2.3.

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This study revealed that both ‘Xinli No.7’ and ‘Korla Fragrant Pear’ exhibited an increasing trend in MDA content, a phenomenon that may be closely associated with the progressive decrease in SOD activity observed in both cultivars throughout the entire floral bud developmental stage.

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