Disruption of the Contents of Endogenous Hormones Cause Pollen Development Obstruction and Abortion in Male-Sterile Hybrid Lily Populations.

The MDA content in the sterile line showed a slightly increasing trend from the sporogenous cell stage to the microspore mother cell stage but significantly increased in the tetrad stage, reaching 0.69 mg·g −1 , which was 3.54 times higher than that in the microspore mother cell stage and significantly higher than that in fertile lines in the same time period ( Figure 3 D). 2.4.

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In the three stages of anther development, the MDA content in the fertile lines presented an increasing trend after decreasing first, and the peak MDA content in the microspore mother cells of HF, M, and F was 0.27 mg·g −1 , 0.26 mg·g −1 , and 0.22 mg·g −1 , respectively.

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