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Efficient breeding method adopting multi-female-parent one-male-parent mode to prepare oilseed rape hybrid

A hybrid and rapeseed technology, applied in the field of crop genetics and breeding, can solve the problems affecting the purity of seed production, high cost of seed production, low yield, etc., achieve important scientific value and production application value, large amount of seed production, and accelerate the breeding process Effect

Inactive Publication Date: 2017-01-18
陕西省杂交油菜研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Nuclear male sterile line (GMS): It is mainly used to induce andricide of normal plants in the production of GMS sterile line. No matter it is single recessive nuclear sterile or double recessive nuclear sterile, it needs to be manually removed during seed production. About 50% of the normal fertile plants are not only time-consuming and labor-intensive, but the seed production cost is high and the yield is low, and the purity of the seed production is affected by human factors

Method used

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  • Efficient breeding method adopting multi-female-parent one-male-parent mode to prepare oilseed rape hybrid
  • Efficient breeding method adopting multi-female-parent one-male-parent mode to prepare oilseed rape hybrid
  • Efficient breeding method adopting multi-female-parent one-male-parent mode to prepare oilseed rape hybrid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1: Taking 2013 as an example, using 18 inducible sterile lines or nuclear male sterile lines, the specific implementation steps of preparing hybrids by the method of multiple mothers and one father (see Table 4):

[0052] Table 4: Hybrids configured with 18 inducible sterile lines using a common male parent pollination line, male parent ZY1

[0053]

[0054] 1. Parental selection: The selected male parent pollination line ZY1 has the following characteristics: strong growth potential, dispersed plant type, high oil content, medium to high stalk, good horniness, mid-to-late maturity, good resistance, and midwinter. The selected 18 inducible sterile lines have 3-4 characteristics such as short stem early maturity, compact plant type, concentrated flowering period, good yield, high oil content, good general combining ability, lodging resistance and disease resistance, and suitable for machine harvesting. , All of them are semi-winter high-generation strains.

[0055] 2. ...

Embodiment 2

[0066] Example 2: Taking 2015 as an example, the implementation steps of using 15 cytoplasmic male sterile lines to configure hybrids using the method of multiple mothers and one father:

[0067] 1. Parental selection: The selected male parent pollination line SR3 is an excellent restorer line for cytoplasmic male sterility, dual-use in winter and spring. Its characteristics are as follows: early maturity and short stalks, short branches, straight siliques, good yellowing, compact plant type, strong resistance and tolerance, and high oil content. The 15 cytoplasmic male sterile lines are all Shaan 2A cytoplasm, which belong to spring sterile lines. Its characteristics are: strong growth potential, good yield, high plant height, mid-to-late maturity, good openness, easy seed production, poor lodging resistance, scattered plant types, and easy to be affected by low temperature in the early stage to produce micronized self-fertilization.

[0068] 2. Safety isolation: the same as the ...

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Abstract

The invention discloses an efficient breeding method adopting a multi-female-parent one-male-parent mode to prepare an oilseed rape hybrid. The method comprises the steps that multiple semi-winterness high-generation homozygous selfing lines high in general combining ability, early-maturing in short stem, resistant to lodging and diseases, compact in plant type, high in oil content, centralized in flowering phase and suitable for mechanical harvesting are screened and serve as chemical hybridization agent SX-1 induced male sterile female parents to perform male sterile line induction; multiple semi-winterness cell nucleus male sterile lines or semi-winterness cytoplasmic cell nucleusmale sterile lines excellent in agronomic traits, good in fecundity and free of obvious defects are selected, meanwhile one high-generation parentselfing line or an excellent restoring line wide in application range, strong in resistance and good in high yield stability is selected, the line with semi-winterness or weak-winterness photo and temperature sensitivity serves as a common pollination line male and are cross-fertilized with multiple sterile lines of three types of CIMS, GMS or CMS to prepare and produce the hybrid for an oilseed rape region. The efficient breeding method has the advantages of shortening a breeding period, improving the breeding efficiency and saving the costs and is suitable for popularization and application.

Description

Technical field [0001] The invention belongs to the technical field of crop genetic breeding, and specifically relates to a high-efficiency breeding method for preparing rape hybrids by adopting multiple mothers and one father mode. Background technique [0002] Since the 1960s, my country has started the research on the utilization of rape heterosis. It is the first country in the world to bred hybrid rapeseed and promote it on a large scale. The utilization of rape heterosis is at the world's leading level. At present, cytoplasmic male sterility (CMS), nuclear male sterility (GMS), and the use of chemical hybridization agents to induce male sterility (CIMS) are the main ways to utilize rape heterosis. [0003] The chemical hybridization agent SX-1 is an ideal chemical hybridization agent developed and screened by the Shaanxi Hybrid Rape Research Center. It obtained the national invention patent in 2006 (Patent No.: ZL03105389.0). It has the characteristics of no pollution, low c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 韦世豪董育红李永红田建华李殿荣王学芳张耀文
Owner 陕西省杂交油菜研究中心