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

Active Publication Date: 2014-08-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Above-mentioned two kinds of methods all can play the effect of suppressing rice ear germination, and have no adverse effect to the germination of the seed after harvesting, but contain multiple chemical reagents in the ear germination agent of its spraying, will have certain effect on the quality of rice seed. There are certain hidden dangers in the impact and food safety, and it is not conducive to environmental protection

Method used

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  • Pre-harvest sprouting inhibitor and method for inhibiting pre-harvest sprouting of rice
  • Pre-harvest sprouting inhibitor and method for inhibiting pre-harvest sprouting of rice
  • Pre-harvest sprouting inhibitor and method for inhibiting pre-harvest sprouting of rice

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The present invention discloses a pre-harvest sprouting inhibitor and a method for inhibiting pre-harvest sprouting of rice, wherein the pre-harvest sprouting inhibitor adopts water as a solvent, and contains 1000-2000 mg/kg of eugenol. The method comprises: uniformly spraying the pre-harvest sprouting inhibitor on rice panicle at a period from the late milk stage to the early yellow ripe stage of rice. According to the present invention, the low-toxic and easily-degradable eugenol is adopted as the main component of the pre-harvest sprouting inhibitor so as to effectively reduce the pre-harvest sprouting rate of rice and make the harvested rice seeds maintain good comprehensive property; and the treatment agent adopts water as the matrix, and has characteristics of no organic solvent addition, good environmental protection benefit, simple production process, low material consumption and low cost.

Description

technical field [0001] The invention belongs to the technical field of seed production, and in particular relates to a panicle germination inhibitor and a method for inhibiting rice panicle germination. Background technique [0002] Ear germination refers to the phenomenon that grains germinate on ears due to encountering conditions suitable for germination before harvesting. In addition to causing a large number of seeds to deteriorate, ear germination is even more harmful because it increases the difficulty of seed storage and soaking and accelerating germination, and seriously affects the quality of seeds. The ear germination problem of rice in my country is quite prominent. Generally, the ear germination rate is about 5%. However, if it encounters rainy weather during the maturity period, a large number of ears will germinate, ranging from 10% to more than 50%, causing serious economic losses in agricultural production. . [0003] Among the existing methods for inhibiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N31/16A01P21/00A01G7/06
Inventor 胡晋胡琦娟关亚静胡伟民宋文坚
Owner ZHEJIANG UNIV
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