In order to explore the physiological and biochemical mechanism of male sterility in watermelon,the changes of antioxidant enzymes,metabolic substances and endogenous hormones in male flower buds of male sterile strains and fertile strains were compared at different developmental stages.Using the male sterile line GMS4 of watermelon as the test material,the physiological and biochemical indicators of male bud at different developmental stages were determined.The results showed that the SOD and CAT activities decreased overall and while the POD activity increased during the whole bud development period.The soluble protein content of male buds of sterile strains was lower than that of fertile strains,and the proline content of male buds of sterile strains showed a decreasing trend,while that of fertile strains was the opposite.The content of IAA,ABA,ZR,GA3 and JA endogenous hormones in male flower buds bewteen sterile and fertile strains were significantly different,and the change trend was different.The results showed that the changes of anti-oxidant enzyme activity,metabolic substances and endogenous hormone contents might be related to watermelon anther abortion.
维普
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