Efficient sorghum crossbreeding method

A hybrid breeding and sorghum technology, applied in the field of breeding, can solve the problems of low efficiency, long period of sorghum hybrid breeding, low utilization rate of scarce germplasm resources, etc., and achieves the goal of increasing the number of hybrid combinations, increasing the breeding success rate and improving the breeding efficiency. Effect

Pending Publication Date: 2021-06-25
SHANGQIU ACADEMY OF AGRI & FORESTRY
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Problems solved by technology

[0006] The purpose of the present invention is to provide a high-efficiency cross-breeding method for sorghum, which aims to solve the t

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  • Efficient sorghum crossbreeding method

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Example Embodiment

[0025] Embodiment 1: a method for high-efficiency hybrid breeding of sorghum, comprising the following steps,

[0026] (1) Individual plant selection: Based on the breeding goal, the F 2 10-20 individual plants with excellent growth potential, no defects, and breeding target traits were preliminarily selected from the populations (groups of 100-300 plants) segregated from generation to generation, and marked; Among the primary selected individual plants, select 1 to 2 individual plants whose ears and plants meet the requirements as the female parent, and hang tags, indicating the source and other marking information.

[0027] (2) Arranging spikelets: Firstly, according to breeding requirements and material properties, 7 to 10 spikelets are generally reserved according to needs; secondly, excess spikelets are cut off from the junction of the primary branch of the sorghum spike and the main axis. Then combine the small parchment bags prepared in advance to wrap the reserved spi...

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Abstract

The invention discloses an efficient sorghum crossbreeding method, and aims to solve the technical problems of long period, low efficiency and low utilization rate of scarce germplasm resources of current sorghum crossbreeding. The method comprises the following steps: selecting a single plant with a target character as a female parent from a low-generation material bred based on a sorghum line, selecting spikelets with a required number of primary branches after heading, respectively bagging and isolating the spikelets, respectively carrying out cross pollination on each spikelet after artificial castration, performing direct cross pollination on sterile single plants, and performing maintainer pollination with a maintainer line. According to the method, a single sorghum spike is divided into a plurality of spikelets by using a small braid dividing method, so that the problem that a scarce single spike can only be utilized once is solved, the breeding period is greatly shortened, and the breeding efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of breeding, in particular to a high-efficiency hybrid breeding method for sorghum. Background technique [0002] Sorghum has a very long history of cultivation in China, forming a unique type of sorghum. At present, sorghum is the fifth largest cereal crop in the world (corn, wheat, rice, barley and sorghum). The perennial sorghum planting area in the world is about 42.34 million hectares, and the perennial sorghum planting area in my country is about 743,000 hectares. Sorghum has good drought resistance, low water consumption, high water use efficiency, and high comparative benefits. It has irreplaceable advantages in the crop production system in the arid regions of Northeast, North, and Northwest China. [0003] Although sorghum is no longer a staple crop, it is still indispensable in agricultural production. The development of sorghum industry is also the need of national economic development. As we ...

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Application Information

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IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 孟彦陈敏菊孙喜云袁海波张福娟孟宪政韩同进闫艳梅
Owner SHANGQIU ACADEMY OF AGRI & FORESTRY
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