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Two-line sterile line propagating method for rice in high mountain region

A technology for rice in high mountain areas, applied in the field of two-line male sterile line breeding of rice in high mountain areas, can solve the problems of high risk in breeding and the influence of changes in light and temperature conditions, etc., and achieve strong operability, simple technology, and economical cost low effect

Inactive Publication Date: 2019-03-08
铜仁科学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The two-line male sterile line is the material basis for two-line hybrid rice breeding. During the breeding process, the two-line male sterile line is easily affected by changes in light and temperature conditions in the environment, resulting in greater risks in breeding.
At present, the breeding of the two-line CMS mainly adopts three methods of short-day low temperature in winter in Hainan, short-day low temperature in high altitude areas, and cold water series irrigation. However, in actual production, the above three methods have more Conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for propagating a two-line male sterile line of rice in an alpine region, comprising the following steps:

[0027] a. Field transformation: carry out field transformation on the sterile line breeding field to ensure that there are at least 3 water inlets per mu of water inlet and at least 3 water outlets at the water outlet to form string irrigation;

[0028] b. Seed treatment: soak the seeds in 300 times of 40% strong chlorine essence for 24 hours for disinfection, wash them with clean water and immerse them to accelerate germination, break the chest under the condition of 28°C-30°C, and dry seedling seedlings can be sown when the buds are white; the step a The soaking time in the medium is 24h;

[0029] c. Sowing: Sowing is carried out at a stable daily average temperature above 15°C; dry seedling raising is adopted for seedling raising: seedbed production, acid adjustment, fertilization, disinfection, and sowing seedbed management should comply with the regu...

Embodiment 2

[0035] a. Field transformation: carry out field transformation on the sterile line breeding field to ensure that there are at least 3 water inlets per mu of water inlet and at least 3 water outlets at the water outlet to form string irrigation;

[0036] b. Seed treatment: soak the seeds in 40% strong chlorine essence 300 times solution for 22 hours for disinfection, wash them with clean water and immerse them to accelerate germination, break the chest under the condition of 28°C to 30°C, and dry seedling seedlings can be sown when the buds are white; the step a The soaking time in the medium is 24h;

[0037]c. Sowing: Sowing is carried out at a stable daily average temperature above 15°C; dry seedling raising is adopted for seedling raising: seedbed production, acid adjustment, fertilization, disinfection, and sowing seedbed management should comply with the regulations of DB52 / T 430-2001; the best leaf age for transplanting At the 5-leaf stage, the sowing rate is 50g-75g seed...

Embodiment 3

[0043] a. Field transformation: carry out field transformation on the sterile line breeding field to ensure that there are at least 3 water inlets per mu of water inlet and at least 3 water outlets at the water outlet to form string irrigation;

[0044] b. Seed treatment: soak the seeds in 300-600 times of 40% strong chlorine solution for 26 hours for disinfection, wash and immerse in clear water, accelerate germination, break the chest under the condition of 28-30°C, and dry seedling seedlings can be sown when the buds are white; The soaking time in the step a is 24h;

[0045] c. Sowing: Sowing is carried out at a stable daily average temperature above 15°C; dry seedling raising is adopted for seedling raising: seedbed production, acid adjustment, fertilization, disinfection, and sowing seedbed management should comply with the regulations of DB52 / T 430-2001; the best leaf age for transplanting At the 5-leaf stage, the sowing rate is 50g-75g seeds per square meter; 2 Use 40%...

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Abstract

The invention discloses a two-line sterile line propagating method for rice in a high mountain region. The two-line sterile line propagating method for the rice in the high mountain region comprises the following steps: a, performing field transforming; b, performing seed treatment; c, sowing; d, transplanting in the same field; e, performing fertilizer management; f, performing water management;and g, performing disease and insect prevention and control. The method is simple and economic; the propagating of dual purpose genic male sterile lines of the rice is performed successfully in the mode of regulating and controlling the development of a sterile line during growth duration through cold spring serially irrigating and cultivating technologies; and the two-line sterile line propagating method for the rice in the high mountain region has the advantages of low economical cost, simple technology and high operability.

Description

technical field [0001] The invention relates to the technical field of rice, in particular to a method for propagating a two-line male sterile line of rice in an alpine region. Background technique [0002] The two-line male sterile line is the material basis for two-line hybrid rice breeding. During the breeding process, the two-line male sterile line is easily affected by changes in light and temperature conditions in the environment, resulting in greater risks in breeding. At present, the breeding of the two-line CMS mainly adopts three methods of short-day low temperature in winter in Hainan, short-day low temperature in high altitude areas, and cold water series irrigation. However, in actual production, the above three methods have more Conditions. Contents of the invention [0003] The object of the present invention is just to provide a kind of two-line male sterile line breeding method of rice in high mountain area in order to solve the above problems. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C1/00A01C1/08A01G13/00A01G22/22
CPCA01C1/00A01C1/08A01G13/00A01G22/22
Inventor 陈阳松车崇洪龙淑君李育生李甫荣吴勇信吴仲益陆小燕杨粟栋
Owner 铜仁科学院
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