| 摘要: |
| 测定了15% |
| 关键词: 15% |
| DOI：10.11841/j.issn.1007-4333.2003.03.076 |
| 修订日期：2002-11-29 |
| 基金项目:国家自然科学基金资助项目(30070864) |
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| Effect of 15% Hymexazol-Metalaxyl-Thiram seed coating formulation on the growth of watermelon seedlings and disease resistance-related enzymes |
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| Abstract: |
| To examine the effect of the 15% Hymexazol-Metalaxyl-Thiram seed coating formulation on watermelon seeds, this study was done on their germination, growth and development of the seedlings. The results showed that the germination rate of seeds, length and width of cotyledon and height of seedlings were not significantly different,compared with these of uncoated seeds. However, the length of roots was 15% longer, 22% more sideroots was observed in coated seeds and the weight of one hundred fresh seedlings rose 7%, after being treated. Moreover, accumulated content of Malondialdehyde(MDA) decreased by 59% and content of soluble protein increased by 17% through the coating treatment. Importantly, the activity of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and polyphenoloxidase (PPO) in the seedlings were stimulated evidently, they were 46%,43%,31% respectively, and 57% higher than those of the untreated. It is concluded that the germination of watermelon seeds treated by the chemical was safe, the growth and development of seedlings were promoted and the activity of disease resistance-related enzymes was also increased after being treated. |
| Key words: 15% Hymexazol Metalaxyl Thiram seed coating formulation,watermelon,growth and development,disease resistance related enzymes |
