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Method for producing cotton seeds by inducing long cotton stigmas

A technology of long stigma and cotton, which is applied in the production of hybrid cotton hybrid seeds and cotton artificial long stigma seed production. It can solve the problems that the purity of hybrids cannot meet the production requirements and the difference between flowers is large, so as to improve the efficiency of seed production and breeding. The effect of short cycle and strong adaptability

Inactive Publication Date: 2012-05-30
JIANGSU ACAD OF AGRI SCI
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Problems solved by technology

Although this study clarified the appropriate concentration of GA3 to induce long stigmas, the induced flowers vary greatly from flower to flower, and the purity of the hybrids produced cannot meet the production requirements.

Method used

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  • Method for producing cotton seeds by inducing long cotton stigmas
  • Method for producing cotton seeds by inducing long cotton stigmas
  • Method for producing cotton seeds by inducing long cotton stigmas

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Experimental program
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Effect test

Embodiment Construction

[0018] 1. Materials and Methods

[0019] 1.1 Species tested: Sumian 22, American Jijiaoye.

[0020] 1.2 Test location: Lishui Plant Science Base of Jiangsu Academy of Agricultural Sciences.

[0021] 1.3 Test treatment:

[0022] The experiment was carried out between 2008 and 2010. In 2008, the suitable induction concentration and induction method of GA3 solution, the research and development of small-scale pollinators and heat-insulated pollinators were mainly carried out. In 2009, on the basis of the previous year's work, completed the technical research on pollination with conical turbine negative pressure pollinators; on the basis of heat-insulated pollinators, began to develop low-temperature energy-storage cotton pollinators; In terms of the technique of inducing long stigmas, we have carried out a study on the actual effect of stably inducing more than 95% of the stigmas higher than the stamen clusters by more than 8mm for cotton hybrid seed production. In Sumian 22, ...

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Abstract

The invention relates to a method for producing cotton seeds by inducing long cotton stigmas, belonging to the technical field of cotton hybrid seed production and suiting for producing cotton hybrid seeds. The method comprises the following steps of: dipping a GA3 solution with the concentration of 1000 PPM (Parts Permillion) on the bud base of 8-18 days and dipping each flower with 150-200 microlitre of GA3 solution; inducing more than 95 percent of stigmas to be 8mm higher than a stamen cluster; and directly pollinating without removing stamens after the cotton blossoms out. Flowers are quantitatively dipped by adopting the exogenous hormone GA3, more than 95 percent of stigmas can be stably induced to be 8mm higher than the stamen cluster, and the purity of the produced hybrid seeds can accord with the production requirement.

Description

technical field [0001] The cotton artificial long stigma seed production method of the invention belongs to the technical category of hybrid cotton hybrid seed production and is suitable for producing cotton hybrid seed. Background technique [0002] Hybrid dominance is a common phenomenon in the biological world. In cotton, like other crops, heterosis is common. Hybrid vigor can be produced by interbreeding between species or species. The first generation of hybrids generally increases yield by 20% to 30%, and the second and third generations of hybrids still have an advantage of 10% to 12%. And hybrid cotton will be used for large-scale production, one is to select a high-dominant hybrid combination, and the other is to have a method for producing its hybrid cotton seeds easily and quickly in large quantities. [0003] In the production technology of cotton hybrid seeds, according to the flowering habit of cotton, people have studied a variety of utilization methods, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01G7/06
Inventor 张香桂倪万潮何循宏林家彬沈新莲徐鹏
Owner JIANGSU ACAD OF AGRI SCI
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