A kind of panicle germination inhibitor and the method for suppressing rice panicle germination
An inhibitor and rice technology, which is applied in the field of seed germination inhibitor and suppression of rice seed germination, can solve problems such as food safety hazards, impact on rice seed quality, unfavorable environmental protection, etc., achieve low toxicity, reduce rice seed germination rate, and low cost Effect
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Embodiment 1
[0023] 5% rice panicle germination inhibitor: mix the original drug of eugenol and emulsifier evenly, add a small amount of distilled water and stir evenly, then slowly add the remaining distilled water and fully stir. Wherein eugenol 5%, polyoxyethylene sorbitan monolaurate 5%, calcium dodecylbenzenesulfonate 2.5%, water 87.5%.
[0024] Physicochemical properties and stability of 5% rice panicle germination inhibitor:
[0025] Appearance: milky white liquid, no visible suspended matter and sediment;
[0026] Emulsification and dispersibility: it can quickly and evenly disperse in water, presenting a transparent uniform and stable solution;
[0027] Stability in storage: Stratification occurs after half a month at room temperature, and the homogeneity can be restored by slight shaking;
[0028] Cold storage test: Stored in a refrigerator at 0°C for a week, the preparation is no different from that at room temperature, and the homogeneity can be restored by shaking slightly. ...
Embodiment 2
[0030] 1. Test material: F1 seeds of hybrid rice Qianyou 1
[0031] 2. Drug for testing: 5% active ingredient panicle germination inhibitor
[0032] 3. Test method
[0033] Drug configuration and treatment: Dilute the 5% panicle germination inhibitor in Example 1 to the concentration required for the experiment according to the ratio in Table 1. After the rice seeds were sterilized by 0.1% sodium hypochlorite solution, they were evenly sprayed with clear water (CK) and the ear germination inhibitor of the concentration described in Table 1, and the seeds were taken out after one hour to dry and placed on the bed.
[0034] Seed germination and seedling indicators: the germination conditions were set to light for 8 hours, 30°C; no light for 16 hours, 20°C. Use a paper bed for germination, a small germination box (12*12cm) plus three layers of filter paper. There were 100 seeds per treatment, and three replicates were set up. The germination potential was measured on the 4th ...
Embodiment 3
[0047] In Example 2, the delaying effect of the panicle germination inhibitor on seed germination was confirmed. In this example, the panicle germination inhibitory effect of the panicle germination inhibitor in the field was studied.
[0048] 1. Test material: Indica three-line hybrid rice Qianyou 1
[0049] 2. Drug for testing: 5% active ingredient panicle germination inhibitor
[0050] 3. Test method
[0051] The experiment was carried out at the farm of Zijingang Campus of Zhejiang University in 2013. According to the characteristics of the growth period of the parents, the seeds were sown in stages, and gibberellin was sprayed in stages to ensure that the parents met at the flowering stage. Three repetitions were set for each treatment. The length of a single plot in the north-south direction was about 2.5m with an interval of 0.5m, the width in the east-west direction was about 1m, and the interval between the male parents was 20cm. The area of the plot was 2.5m 2 .
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