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

An inhibitor and technology for rice, applied in the field of ear germination inhibitor and rice germination inhibition, can solve the problems to be further improved, and achieve the effects of good safety and environmental protection benefits, maintaining comprehensive quality and low cost.

Active Publication Date: 2015-10-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the panicle germination inhibitor disclosed in the above-mentioned invention still needs to be further improved aspect rice panicle germination inhibition effect

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Test material: F1 seeds of hybrid rice Qianyou 1.

[0026] 2. Drugs for testing: panicle germination inhibitors A, G, I.

[0027] 3. Test method:

[0028] Drug preparation and seed treatment: The three drugs were prepared according to Table 1 to the concentration required for the experiment. After the rice seeds were sterilized by 0.1% sodium hypochlorite solution, they were evenly sprayed with clear water (CK) and panicle germination inhibitor respectively, and the seeds were taken out and dried after one hour.

[0029] Germination conditions and index determination: the germination conditions were set at 30°C for 8 hours with light; and 20°C for 16 hours without light. Use a paper bed for germination, a small germination box (12*12cm) plus three layers of filter paper. There were 50 seeds per treatment, and three replicates were set up. The germination potential was measured on the third day of germination, and the daily germination number was counted in the fi...

Embodiment 2

[0042] 1. Test material: F1 seeds of hybrid rice Qianyou 1.

[0043] 2, test agent: panicle germination inhibitor A, G, I (with embodiment 1).

[0044] 3. Test method:

[0045] Medicament preparation and seed treatment: with embodiment 1.

[0046] Simulation of panicle germination conditions: In the light incubator, set the light and temperature conditions as 8 hours of light, 38°C; 16 hours of no light, 20°C. Place an air humidifier on the bottom layer of the light incubator to keep the average humidity of the incubator at about 92%. Each treatment was repeated three times, and 50 seeds of each repetition were suspended on a nylon mesh cloth, placed in an incubator for several days, and then the ear germination rate and ear germination index were counted.

[0047] 4. Grading standards for ear germination seeds and calculation methods for ear germination indicators:

[0048] Level 0 - full seed;

[0049] Grade 1-seeds with ruptured lemma shell;

[0050] Level 2 - the sho...

Embodiment 3

[0057] In Examples 1 and 2, the effect of the ear germination inhibitor on delaying seed germination was confirmed. In this example, the field ear germination inhibitory effect of the ear germination inhibitor was studied.

[0058]1. Test material: female parent of indica three-line hybrid rice Qianyou 1.

[0059] 2, test agent: panicle germination inhibitor A, G, I (with embodiment 1).

[0060] 3. Test method:

[0061] The experiment was carried out at the farm of Zijingang Campus of Zhejiang University in 2014. 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....

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Abstract

The invention discloses a pre-harvest sprouting inhibitor and a method for inhibiting rice pre-harvest sprouting. According to the pre-harvest sprouting inhibitor, water serves as a solvent, and eugenol with the concentration of 400-1,200 mg / kg, uniconazole with the concentration of 300-600 mg / kg and maleic hydrazide with the concentration of 400-500 mg / kg are contained. The method for inhibiting rice pre-harvest sprouting comprises the steps that during the period from the milk ripeness final stage to the gold ripeness initial stage of rice, the pre-harvest sprouting inhibitor is evenly sprayed to spikes of the rice. The eugenol low in toxicity and easy to degrade, the uniconazole capable of inhibiting biosynthesis of gibberellin and maleic hydrazide having the strong sprouting inhibitive ability are combined, the rice pre-harvest sprouting rate is effectively reduced, and harvested rice seeds can be maintained with good comprehensive quality; water serves as the matrix of the inhibitor, no organic solvent is added, environmental friendliness is achieved, the production technology is simple, the use amount of materials is small, and cost is low.

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] Seeds of cereal crops such as rice often germinate on the ears when they encounter continuous rainy, high temperature and high humidity weather conditions during the maturity period, that is, ear germination. The panicle germination caused the rice seed vigor to decrease, and the storability of rice decreased. The greater harm is to increase the difficulty of seed storage and seed soaking and germination, which seriously affects the quality of seeds. The ear germination problem in the production process of hybrid rice in my country is quite prominent. If it encounters rainy weather during the rice maturity period, a large number of ears will germinate, ranging from 10% to as high as 50%, causing serious economic losses in agricultural production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/54A01P21/00A01N31/16
Inventor 胡晋胡琦娟曹栋栋关亚静胡伟民宋文坚
Owner ZHEJIANG UNIV
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