Pre-harvest sprouting inhibitor and method for inhibiting pre-harvest sprouting of rice
An inhibitor and a technology for rice, applied in the field of ear germination inhibitor and inhibition of rice ear germination, can solve the problems of rice seed quality impact, hidden danger of food safety, unfavorable environmental protection, etc., and achieve the reduction of rice ear germination rate, low toxicity 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. Rice seeds were sterilized by 0.1% sodium hypochlorite solution and sprayed evenly with clear water (CK) and the panicle germination inhibitor of the concentration described in Table 1 respectively, and took out the seeds after one hour to dry and put them 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 day ...
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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