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Method for combining hybrid first generation seed with cytoplasmic male sterility system

A male sterile line, cytoplasmic technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of restricting the selection of strong dominant combinations and narrowing the selection range of male parents.

Inactive Publication Date: 2009-04-08
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this method has special requirements on whether the male parent can restore the fertility of the hybrid offspring, the selection range of the male parent is narrow, which limits the selection of strong dominant combinations to a certain extent.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0010] Kenaf cytoplasmic male sterile K03A (see invention patent: ZL 200510019454.4) was used as the female parent, and K03B was used as the male parent to reproduce the cytoplasmic male sterile line K03A; the kenaf cytoplasmic male sterile line K03A was used as the female parent, and Fuhong 992 was used as the female parent. (Provided by Fujian Agriculture and Forestry University) The kenaf hybrid K03-2 was bred from the male parent group, which showed normal fertility, high yield, high quality, and high resistance to kenaf anthracnose. This variety passed the expert appraisal organized by the National Agricultural Technology Extension Service Center in 2007, and was named "Hongyou No. 1" (Guopinjianma 2007003).

Embodiment 2

[0012] The cytoplasmic male sterile line "Fuhong No. 3 A" of kenaf (see invention patent: ZL 200510019454.4 Example 4) was used as the female parent, and the cytoplasmic male sterile line "Fuhong No. 3" was propagated with "Fuhong No. 3 B" as the male parent. No. 3 A"; another cytoplasmic male sterile maintainer line "Yuefeng No. 1 B" (see invention patent: ZL 200510019454.4 Example 3) was used as the male parent to produce the kenaf hybrid K07-2, which showed male sterility , high yield, high quality, high resistance to kenaf anthracnose, more than 20% more than the widely popularized kenaf variety "Qingpi No. 3".

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Abstract

The invention relates to a method for combining the first generation of hybrid seeds by kenaf cytoplasmic male sterile line, and belongs to the technical field of combination of crop hybrid seeds. The method is characterized in that the kenaf cytoplasmic male sterile line (also called cytoplasmic-nuclear male sterile line) is taken as female parent, and is combined and crossbred with any one of male fertile varieties (lines), and the male fertile variety (line) is in accordance with the breeding target and is taken as male parent, without considering whether the first generation of hybrid restores the fertility. The method can greatly improve the freedom degree of kenaf hybridized combination, and is easy to breed the hybridized combination with comparative advantages.

Description

Technical field: [0001] The invention relates to a method for combining crop hybrids, in particular to a method for using kenaf cytoplasmic male sterile lines to combine first-generation seeds of hybrids. Background technique: [0002] Kenaf, also known as "kenaf", is an annual bast fiber crop of the Malvaceae Hibiscus genus. Because kenaf is cultivated for the purpose of harvesting bast fibers or stems, the heterosis rate is as high as 35% to 40%. The utilization of kenaf heterosis has long been the main goal of kenaf breeding at home and abroad. Utilization of cytoplasmic male sterile lines of kenaf for hybrid seed production. [0003] In September 2008, the "Breeding Method of Cytoplasmic Male Sterile Line of Kenaf Wild Abortive Type" invented by Zhou Ruiyang of Guangxi University won the national invention patent (ZL 200510019454.4). According to this method, K03A (see: Guikejianzi No. [2004] No. 152), Fu 3A, P3A, 917A, 722A, 763A and L23A (see: Guikejianzi No. [2007] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 周瑞阳
Owner GUANGXI UNIV
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