Breeding method of hybrid corn

A corn breeding and corn technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of comprehensive resistance, decline in high yield, degeneration of seed performance, and high ear position, and achieve low seed production cost, The effect of strong drought tolerance and low ear position

Inactive Publication Date: 2011-07-20
WHEAT RES INST OF AGRI SCI
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Problems solved by technology

[0002] At present, Zhengdan 958 and Jundan 20 are the summer maize varieties widely used in production. Zhengdan 958 has been produced and used for many years, and its seed properties have degraded, and its comprehensive resistance and high yield have declined; Jundan 20 has disease resistance. Sex and high yield are very good, but the biggest disadvantage is that the ear position is too high, easy to lodging, and often seriously reduce yield due to lodging

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  • Breeding method of hybrid corn
  • Breeding method of hybrid corn

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with specific embodiments.

[0018] 1. Source of parents

[0019] Female parent inbred line PK17: It is based on the hybrid combination of P78599 / 478 as the basic material for selection, and 478 is used as the recurrent parent, backcrossed for 3 generations, and then 5 generations of cross-breeding, careful selection, and elimination. An excellent maize inbred line with high combining ability, multi-resistance and strong growth vigor.

[0020] The male inbred line PK8: was bred with E28 / Chang 7-2 as the basic material, Chang 7-2 as the recurrent parent, backcrossed for 2 generations, and then selfed for 5 generations.

[0021] 2. Characteristics

[0022] 2.1 Variety characteristics Seedlings grow strong, the first leaf is oval, the leaf sheath is purple red, and the leaf color is dark green; the adult plant height is 240cm, the ear height is 100cm, the plant type is compact, the leaves are wider an...

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Abstract

The invention discloses a breeding method of a hybrid corn, comprising the following steps of: cultivating a male parent by taking E28 / Chang 7-2 as basic materials; cultivating a female parent by taking P78599 / 478 as the basic materials; and preparing hybrid Jindan No.63. The breeding method disclosed by the invention realizes the organic combination of the disease resistance, the lodging resistance, the high yield and the water-saving performance of summer corn breeds and has appropriate maturation stage, wide adaptability and high seed production output.

Description

technical field [0001] The invention relates to a corn breeding method, in particular to a hybrid corn Jindan 63 breeding method. Background technique [0002] At present, Zhengdan 958 and Jundan 20 are the summer maize varieties widely used in production. Zhengdan 958 has been produced and used for many years, and its seed properties have degraded, and its comprehensive resistance and high yield have declined; Jundan 20 has disease resistance. Both sex and high yield are good, but the biggest disadvantage is that the ear position is too high, easy to lodging, and the yield is often severely reduced due to lodging. [0003] The material E28 used for the breeding of corn Jindan 63 was crossed by Wu Jichang of Dandong Academy of Agricultural Sciences and others with A619Ht as the source of resistance and Lv9kuan. Lv9kuan was used for three generations of backcrossing and continuous selfing for multiple generations. It was bred in 1979 and has a large amount of pollen. , good ...

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Application Information

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IPC IPC(8): A01H1/02
Inventor 张虎张久刚王建军崔爱民阎翠萍樊志新屈非连吉明杨丽萍单皓张伟段学艳
Owner WHEAT RES INST OF AGRI SCI
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