Heat conduction temperature corn germplasm penetration type breeding improvement method

A kind of germplasm and corn technology, applied in the direction of plant genetic improvement, botanical equipment and methods, applications, etc., can solve the problems of difficult utilization of tropical corn germplasm and low breeding efficiency, and achieve low breeding efficiency, long cycle and clear purpose Effect

Active Publication Date: 2018-03-16
贵州省旱粮研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of heat-conducting temperature corn germplasm infiltration breeding improvement method, to solve the problem that the tropical corn germplasm in the prior art is difficult

Method used

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  • Heat conduction temperature corn germplasm penetration type breeding improvement method
  • Heat conduction temperature corn germplasm penetration type breeding improvement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 14D1258: Maize Suwan-SPT-Lancaste population (QR273 / Chang7-2 / / H2671) selection line; plant trait phenotype:

[0047] The height of the plant is 2.10 meters, the ear height is 0.85 meters, the seedlings are dark green, and the growth is strong; the leaf sheath is light purple, the root system is purple; the ear tube type, the axis is white; the middle grain type, the number of ear rows is 14-16 rows, the grain is light yellow, and the adult plant The stalk is light purple and the plant type is compact; it is resistant to diseases such as large and small spot of corn, smut and other diseases; the general combining ability is good; the living stalk is mature; the growth period is 115 days in the southwest mountainous area.

[0048] Qian 1858, a new corn variety, was bred by crossing ZH6218 as the female parent and 14D1258 as the male parent. Field phenotypes of hybrids:

[0049] The plant is semi-compact, with a growth period of 120 days, and the growth period of Guidan 8...

Embodiment 2

[0051] 14D1290: Maize Suwan-SPT-Lancaste population (QR273 / Chang7-2 / / H2671) selection line; plant trait phenotype:

[0052] The plant height is 1.65 meters, the ear height is 0.50 meters, the seedlings are dark green, and the growth is strong; the leaf sheath is light purple, the root system is light purple; the panicle is short and cylindrical, the axis is white; the semi-hard grain type is light yellow; the medium-resistant corn is large and small. disease, smut and other diseases; the general combining ability is good; the living stalks are mature; the growth period of summer sowing is 100 days.

[0053] Handan 661, a new corn variety, was bred by crossing M03 as the female parent and 14D1290 as the male parent. Field phenotypes of hybrids:

[0054] The plant is compact, 103 days in the summer sowing area of ​​Huanghuaihai. The plant is compact, with a growth period of 103 days, which is comparable to that of Zhengdan 958. The plant height is 250 cm, the ear height is 12...

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Abstract

The invention discloses a heat conduction temperature corn germplasm penetration type breeding improvement method. According to the method, a local germplasm yellow alteration system serves as a base,a tropic corn Suwan germplasm serves as an antigen, and a Lancaster germplasm is introduced in a penetration manner. According to the method, a temperate corn germplasm can be effectively improved, excellent additive genes of a temperate inbred line are kept, and excellent tropic germplasm resistance is permeated, so that the corn germplasm is improved. The breeding method is high in practicability and operability, definite in purposefulness, cost is saved, breeding efficiency is obviously improved, and the method can be popularized and applied in corn breeding.

Description

technical field [0001] The invention relates to a heat conduction temperature corn germplasm infiltration breeding improvement method, which belongs to the technical field of crop breeding. Background technique [0002] Corn is an important food crop in the world. Its total output is second only to wheat, ranking second. Corn has risen to become the largest food crop in my country. Play a pivotal role. It is the fundamental task of the scientific and technological progress of the national corn industry system to lead and support the development of my country's modern corn industry by increasing corn production. The goal of corn breeding has changed from pursuing absolute high yield to being green, safe and high-quality. Population increase, social development and adjustment of agricultural structure require corresponding varieties. In order to increase farmers' income and enhance international competitiveness, the breeding level and production efficiency must be continuously...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 郭向阳陈泽辉祝云芳王安贵吴迅刘鹏飞
Owner 贵州省旱粮研究所
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