A method to quickly break the dormancy of barnyardgrass seeds and increase the germination rate

A technology for breaking dormancy and germination rate, applied in the fields of seed and rhizome treatment, agriculture, application, etc., can solve the problems of large difference in germination time, long seed dormancy time, slow germination of barnyard grass, etc., to achieve consistent germination time and improve germination rate. , the effect of the simple method

Active Publication Date: 2021-11-02
HUNAN PLANT PROTECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is the most commonly used germination method at present. This method is simple and convenient, but there are also the following problems: 1. The seeds dormant for a long time, and generally need a winter to germinate in the coming year; 2. Barnyard grass germinates slowly, with low germination rate and weak germination potential ; 3. The germination is irregular and the germination time varies greatly, especially in the bioassay test of herbicides, which affects the results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method of quickly breaking barnyardgrass seed dormancy and improving germination rate of the present invention, comprising the following steps:

[0029] (1) On June 28, 2016, mature barnyardgrass seeds were collected from the field. First, mature ears of barnyardgrass were put into a nylon mesh bag for collecting seeds and patted gently. The mature seeds fell into the mesh bag and collected. After returning, put the seeds in the sun for 3 days; then store the barnyardgrass seeds in a -20°C refrigerator for 35 days to obtain dormant barnyardgrass seeds;

[0030] (2) The barnyardgrass seeds obtained after the step (1) are placed in concentrated sulfuric acid (mass concentration greater than or equal to 70%) and soaked for 12 minutes, then taken out and rinsed repeatedly with clear water to clean the sulfuric acid on the seeds to obtain thinned barnyardgrass seeds of chaff;

[0031] (3) The barnyardgrass seeds obtained after the step (2) are placed in an artificial clim...

Embodiment 2

[0033] A method of quickly breaking barnyardgrass seed dormancy and improving germination rate of the present invention, comprising the following steps:

[0034] (1) On October 2, 2016, mature barnyardgrass seeds were collected from the field. First, the mature ears of barnyardgrass were put into the nylon mesh bag used to collect the seeds and patted gently. The mature seeds fell into the mesh bag and collected. After returning, put the seeds in the sun for 5 days; then store the barnyardgrass seeds in a -20°C refrigerator for 30 days to obtain dormant barnyardgrass seeds;

[0035] (2) The barnyardgrass seeds obtained after the step (1) are placed in concentrated sulfuric acid (mass concentration greater than or equal to 70%) and soaked for 15 minutes, then taken out and rinsed repeatedly with clear water to clean the sulfuric acid on the seeds to obtain thinner barnyardgrass seeds of chaff;

[0036] (3) The barnyardgrass seeds obtained after the step (2) are placed in an ar...

Embodiment 3

[0038] A method of quickly breaking barnyardgrass seed dormancy and improving germination rate of the present invention, comprising the following steps:

[0039] (1) On June 23, 2017, mature barnyardgrass seeds were collected from the field. First, mature ears of barnyardgrass were put into a nylon mesh bag for collecting seeds and patted gently. The mature seeds fell into the mesh bag and collected. After returning, put the seeds in the sun for 3 days; then store the barnyardgrass seeds in a -20°C refrigerator for 37 days to obtain dormant barnyardgrass seeds;

[0040] (2) The barnyardgrass seeds obtained after the step (1) are placed in concentrated sulfuric acid (mass concentration greater than or equal to 70%) and soaked for 14min, then taken out and rinsed repeatedly with clear water to clean the sulfuric acid on the seeds to obtain thinner barnyardgrass seeds of chaff;

[0041] (3) The barnyardgrass seeds obtained after the step (2) are placed in an artificial climate c...

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PUM

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Abstract

The invention discloses a method for quickly breaking the dormancy of barnyardgrass seeds and improving the germination rate, comprising the following steps: putting the mature barnyardgrass ears into a nylon mesh bag and tapping lightly, so that the mature seeds fall into the mesh bag naturally; The obtained barnyardgrass seeds are placed in the sun to dry, and then stored in an environment of ‑20°C to 0°C to obtain barnyardgrass seeds that have broken dormancy, soaked in concentrated sulfuric acid, and then rinsed with water to obtain thinning Barnyardgrass seeds with husks were placed in an artificial climate chamber for germination. The method of the invention is simple and easy to operate, can quickly break seed dormancy and realize seed germination in a short period of time, shorten the dormancy time of barnyard grass seeds, the germination process only needs 3-5 days, saves a lot of time, and has a high germination rate. It can also make the seeds of barnyardgrass germinate neatly and the germination time is consistent, which is conducive to improving the efficiency and accuracy of research, and is suitable for indoor bioassays of the vicious weed barnyardgrass in my country's farmland, detection of herbicide resistance and other fields.

Description

technical field [0001] The invention belongs to the technical field of plant protection, in particular to a method for rapidly breaking the dormancy of barnyardgrass seeds and increasing the germination rate. Background technique [0002] Barnyardgrass (Echinochloa crusgalli (L.). Beaiv.) is one of the world's top ten malignant weeds, and it is also the most widely distributed weed in China's rice production areas and has the greatest impact on rice yield. In my country's rice fields, the damage area is as high as 9.4×10 5 hm 2 , accounting for 43.5% of the total area of ​​rice fields in my country, seriously affecting the yield and quality of rice. Especially with the rapid development of light cultivation methods, the area of ​​direct-seeding rice has increased rapidly, and the occurrence base of barnyardgrass in direct-seeding rice is more, as high as 1200 plants / m 2 , if no control is carried out, rice grains will fail due to the harm of barnyardgrass. Chemical weedi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C1/00
CPCA01C1/00
Inventor 马国兰刘都才刘雪源彭亚军李巳夫
Owner HUNAN PLANT PROTECTION INST
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