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A kind of breeding method of high-yield variety of Brassica napus

A cabbage type rapeseed and variety technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of inability to take into account large grains and multiple grains, high cost, and poor repeatability between years, so as to reduce material costs and manpower. Cost-to-use, repeatable, and easy-to-implement effects

Active Publication Date: 2018-06-26
江西省农业科学院作物研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, what the present invention intends to solve is the defects that the existing breeding technology of high-yield Brassica napus varieties cannot take into account large grains and multiple grains, poor annual repeatability, and high cost. Breeding method of high-yielding Brassica napus varieties with good grain and annual repeatability and low cost

Method used

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  • A kind of breeding method of high-yield variety of Brassica napus

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Embodiment 1

[0052] This embodiment provides a method for breeding high-yield rapeseed varieties, including the following steps:

[0053] 1. Kernel weight germplasm resource identification:

[0054] 1) Field test:

[0055] After applying the base fertilizer to the test field, a rape seeder (model: 2BYD-6, no seeds added) was used to complete the plowing, ditching, and boxing of the test field at one time. Among them, the width of the compartment is 1.5m, and the row spacing is 30cm;

[0056] In early September, the Brassica napus breeding resources were collected, and different strains of Brassica napus seeds were sown in the experimental field. Two rows were sown for each strain, and 15 seedlings were fixed in each row to ensure uniform seeding and neat emergence. Among them, the fertilization method in the experimental field was carried out according to the principle of re-application of base fertilizer, increased application of phosphorus and potassium fertilizer, and mandatory application of ...

Embodiment 2

[0077] This embodiment provides a method for breeding high-yield rapeseed varieties, including the following steps:

[0078] 1. Kernel weight germplasm resource identification:

[0079] 1) Field test:

[0080] After applying the base fertilizer to the test field, a rape seeder (model: 2BYD-6, no seeds added) was used to complete the plowing, ditching, and boxing of the test field at one time. Among them, the width of the compartment is 1.5m, and the row spacing is 30cm;

[0081] In the first ten days of October, the Brassica napus breeding resources were collected, and different strains of Brassica napus seeds were sown in the experimental field. Two rows were sown for each strain, and 15 seedlings were fixed in each row to ensure uniform seeding and neat emergence. Among them, the fertilization method in the experimental field was carried out according to the principle of re-application of base fertilizer, increased application of phosphorus and potassium fertilizer, and mandatory a...

Embodiment 3

[0101] This embodiment provides a method for breeding high-yield rapeseed varieties, including the following steps:

[0102] 1. Kernel weight germplasm resource identification:

[0103] 1) Field test:

[0104] After applying the base fertilizer to the test field, a rape seeder (model: 2BYD-6, no seeds added) was used to complete the plowing, ditching, and boxing of the test field at one time. Among them, the width of the compartment is 1.5m, and the row spacing is 30cm;

[0105] In early September, the breeding resources of Brassica napus were collected, and different strains of Brassica napus seeds were sown in the experimental fields. Two rows were sown for each strain, and 15 seedlings were fixed in each row to ensure uniform seeding and neat emergence. Among them, the fertilization method in the experimental field was carried out according to the principle of re-application of base fertilizer, increased application of phosphorus and potassium fertilizer, and mandatory application...

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Abstract

The invention discloses a breeding method for a high-yield variety of Brassica napus. According to the breeding method, germplasm resource identification, reorganization and isolation and identification of the seed weight per pod, repolymerization and purification are carried out and then hybrid combinations are prepared or taken as the conventional varieties to be subjected to yield identification, thus the high-yield variety of the Brassica napus can be obtained. The breeding method gives balanced consideration on two yield limiting factors of the thousand seed weight and seed weight per pod, so that the high-yield variety can be more conveniently and quickly screened and identified to realize the consideration of large seeds and multiple seeds. Furthermore, compared with seed testing on the thousand seed weight and seed weight per pod simultaneously, the breeding method only carries out seed testing on one character of the seed weight per pod, thereby being easy in implementation, improved in breeding efficiency, and further greatly lowered in the material cost and labor use cost.

Description

Technical field [0001] The invention relates to the technical field of plant breeding methods, in particular to a method for breeding high-yield rapeseed varieties. Background technique [0002] Rape is divided into three types: cabbage-type rape, mustard-type rape, and cabbage-type rape. Among them, cabbage-type rape has the highest yield and is the largest and highest total oil crop in my country. Increasing the yield per plant of Brassica napus, and then increasing its total yield, is very important to guarantee the supply of edible vegetable oil, improve economic efficiency and mobilize farmers' enthusiasm for planting. [0003] In order to increase the yield of Brassica napus, the breeding of new high-yield varieties is the key. Traditional breeding methods will consider the yield composition of Brassica napus, and usually divide its yield composition into four parts: one is the effective number of individual plants per unit area; the other is the effective number of siliques...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 陈伦林李书宇丁戈熊洁宋来强邹晓芬
Owner 江西省农业科学院作物研究所
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