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Method for passivating light sensitivity of corn Suwan selfing lines

An inbred, photosensitivity technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., to achieve the effect of improving efficiency, excellent performance and good combining ability

Inactive Publication Date: 2019-08-16
贵州省旱粮研究所 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there has not been any report on direct domestication in the north using the superior maize Suwan inbred line

Method used

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  • Method for passivating light sensitivity of corn Suwan selfing lines
  • Method for passivating light sensitivity of corn Suwan selfing lines
  • Method for passivating light sensitivity of corn Suwan selfing lines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A method for passivating the photosensitivity of the Suwan inbred line of corn, comprising the following steps:

[0043] (1) Utilize the parent QB48 of the hybrid Jindan 999 (QB48×J106), which has a large production area in Southwest China, and its inbred line is a tropical and subtropical photosensitive maize Suwan inbred line with excellent performance and good general combining ability, Therefore, it was directly domesticated as a domestication material in the northern seed production area, and the method of "south selection and north domestication" was carried out by means of fixed sowing date, setting pollination time limit, large group planting, single plant selfing or line hybridization, and domesticated first generation seeds were obtained. ;

[0044] The direct domestication refers to the use of the photosensitive maize Suwan inbred line to be planted in the north to allow it to be domesticated to photosensitivity without separating any other sources of materia...

Embodiment 2

[0048] A method for passivating the photosensitivity of the Suwan inbred line of corn, comprising the following steps:

[0049] (1) Utilize the parent T32 of the hybrids Guidan 8 (T32×P159) and Jinyu 818 (T32×QB506), which have been popularized in southwest China, and their inbred lines are excellent in themselves and have good general combining ability The Suwan inbred line of tropical and subtropical photosensitive maize was directly domesticated in the northern seed production area as a domestication material. The method of "south selection and north domestication" was carried out by means of fixed sowing date, setting pollination time limit, large group planting, and line hybridization. Domesticated 1 generation of seeds;

[0050]The direct domestication refers to the use of the photosensitive maize Suwan inbred line to be planted in the north to allow it to be domesticated to photosensitivity without separating any other sources of material blood; the northern seed produc...

Embodiment 3

[0054] A method for passivating the photosensitivity of the Suwan inbred line of corn, comprising the following steps:

[0055] (1) Using the parent GD909 of the hybrid Jinyu 908 (QR11×GD909), which has been popularized in the mountainous areas of southwest China, its inbred line is a tropical and subtropical photosensitive maize Suwan inbred line with excellent performance and good general combining ability, Therefore, it was directly domesticated as a domestication material in the northern seed production area, and the methods of "south selection and north domestication" were carried out by means of fixed sowing date, setting pollination time limit, large group planting, and single plant selfing to obtain the first generation of domesticated seeds;

[0056] The direct domestication refers to the use of the photosensitive maize Suwan inbred line to be planted in the north to allow it to be domesticated to photosensitivity without separating any other sources of material blood;...

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Abstract

The invention discloses a method for passivating light sensitivity of corn Suwan selfing lines. The light-sensitive corn Suwan selfing lines are directly domesticated in the north seed production areawith a south selection and north domestication method, and a domesticated generation 1 is obtained; the domesticated generation 1 is planted in a head progeny row, and domesticated generation 2 is obtained, domestication is continued 2-3 times, domesticated stabilized seeds are obtained and then identified, and a light-insensitive corn Suwan selfing line is obtained. The light-sensitive corn Suwan selfing lines QB48, T32, GD909, XZ50612 and S611 are used as domestication materials and treated with the south selection and north domestication method, so that the light sensitiveness of the Suwanselfing lines is passivated, the setting percentage is increased by 42%-53%, the seed yield is increased by 51.3%-187.6%, the flowering time is 5-15 d ahead of time, the growth period is shortened, the cost is saved, and the blank of direct domestication of excellent Suwan selfing lines in production in the north is filled up.

Description

technical field [0001] The invention belongs to the technical field of crop breeding, in particular to a method for inactivating the photosensitivity of Suwan inbred line of corn. Background technique [0002] Maize (Latin name: Zeamays L.) is an annual herb of the Poaceae Zea genus. Also known as maize, cob, corn, rice, millet, corn, corn, pearl rice, bract, etc., it is called pearl grain in Northeast Liaoning dialect, barley kernel in Chaozhou dialect, corn in Cantonese, and fanmai in Hokkien dialect. It is the world's largest food crop and has been called the king of feed. At the same time, it is also one of the earliest and most effective crops to use heterosis. Its planting area and total output are second only to rice and wheat. Corn has always been known as a longevity food. It is rich in protein, fat, vitamins, trace elements, cellulose, etc. It has great potential to develop high-nutrition, high-biological function food, and corn has high yield and strong adaptabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 王安贵陈泽辉任洪柏光晓张泽志祝云芳郭向阳刘鹏飞吴迅
Owner 贵州省旱粮研究所
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