CN101889537A

CN101889537A - Method for preparing high-yield hybrid waxy corn seeds

Info

Publication number: CN101889537A
Application number: CN201010216728XA
Authority: CN
Inventors: 李荣河; 李继刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-05
Filing date: 2010-07-05
Publication date: 2010-11-24

Abstract

The invention discloses a method for preparing high-yield hybrid waxy corn seeds and belongs to the field of the production of crop hybrid seeds. In the method, a new hybrid combination which is bred from an SCA matched force determination group is adopted, namely Taibai 113*Taibai 101, wherein the female parent Taibai 113 is a second cycle line bred through continuous selfing of Bai 107*Shen 219 in 2003; and the male parent Taibai 101 is a hybrid LD981F2 white-grain plant in a corn institution in Shandong Agricultural Academy of Science and is bred through continuous multi-generation selfing in 2004. The seeds have the advantages of maturity with living plants and high disease resistance.

Description

A kind of producing method for seed of high-yield hybrid waxy corn kind

Technical field:

The present invention relates to the seed production technique of corn hybrid seed, belong to the field of agriculture seed selection new varieties.

Background technology:

Corn is the high yield cereal crops, also is valuable forage crop.The Maize Production development of nearly 30 years China is very fast, and area under cultivation expands 34584.15 ten thousand mu in 2000 to towards 23747.2 ten thousand mu of the seventies, and per mu yield is increased to 306.49 kilograms in 2000 from 139.1 kilograms of the seventies, increases by 120.3%.The raising of per unit area yield removes and enriches fertilizer, outside the measure of prevention and elimination of disease and pests is strengthened, so the major measure that the corn hybrid seed of high yield also is volume increase is promoted in seed selection. and the requirement of the update of China's corn variety is still extremely urgent.

Summary of the invention:

The object of the invention is to accelerate the speed of the update of China's corn variety, improve constantly China's maize yield, satisfy under the present different ecological environment Maize Production to the requirement of corn variety, and the producing method for seed of producing high yield and high quality hybrid maize kind is provided.

A kind of producing method for seed of high-yield hybrid waxy corn kind is realized by following measure:

The new combination of a hybridization of adopting the seed selection of SCA combining ability test group to form, combination: safe white 113 * too white 101, maternal safe white 113 is second cycle lines that white 107 * Shen 219 forms through continuous selfed breeding, bred in 2003, male parent safe white 101 is the strains of the white grain of the single 981F2 choosing in academy of agricultural sciences, Shandong corn institute crossbreed Shandong, and the many generation seed selections in 2004 of selfing form continuously.

The seed grain white that uses producing method for seed of the present invention to produce, grain type horse flute profile, the plant type compactness, seedling stage the leaf sheath purple.About 260 centimetres of plant heights, 100 centimetres of left and right sides, fringe position complete stool number of blade 18-20 sheet, leaf green.In the seedling stage seedling gesture, filigree purple, flower pesticide purple.The fruit ear cylindricality, about 20 centimetres of spike lengths, thick 5.5 centimetres of fringe, bald 0.5 centimetre, tassel row number 14-16 is capable, several 42 of row grain, thick 2.9 centimetres of axle, cob white, white grain, horse flute profile, thousand kernel weight 372 grams, seed-producing rate 86.5%.Bar maturation alive, disease resistance is good.Live variety comparative test of our unit's summer in 2006 is amounted to 666.5 kilograms of per mu yields and is amounted to 615.3 kilograms of per mu yields than CK Zheng Dan 958, volume increase 8.32%; Live variety comparative test of our unit's summer in 2007 is amounted to 644 kilograms of per mu yields and is amounted to 611.5 kilograms of per mu yields than CK Zheng Dan 958, volume increase 5.31%.

This combination be fit to cornfield interplanting and the summer live, wait the capable cultivation of line-spacing or width, summer sowing 4000 strain/mus, date of seeding, is by the end of May at the beginning of 6 months, about 96 days breeding times.Gently execute seed manure, heavy dressing ear manuer is mended granules application fertilizer.The little leaf spot of the Chinese People's Anti-Japanese Military and Political College, bacterial wilt, graywall, smut, virus disease.Attention control aphid corn borer.

Embodiment:

The specific embodiment of the present invention is as follows:

Maternal: safe white 113 inbred line summer production of hybrid seeds 4000-4500 strain/mus, by the end of May-6 month in sowing, 95 days breeding times, left and right sides plant height was about 170 centimetres, about 85 centimetres of fringe positions, leaf sheath color purple, white axle, white horse flute profile.

Male parent: safe white 101 inbred line summer production of hybrid seeds 4000-4500 strain/mus, by the end of May-6 month in sowing, 95-98 days breeding time, 210 centimetres of plant heights, plant type compactness, grain white, white half a horse flute profile, flower pesticide purple, filigree purple.Disease-resistant, anti-.The attention control aphid.A short management method is on earth adopted in the production of hybrid seeds.

Father and mother's one's own profession ratio is 1: 4, maternal thickness of sowing 3500-4000 strain/mu, and male parent thickness of sowing 1000-1200 strain/mu is broadcast male parent earlier and is broadcast male parent 2/1 after 2/1,3 day and sow simultaneously with female parent.

Claims

1. the producing method for seed of a high-yield hybrid waxy corn kind, the new combination of a hybridization that it is characterized in that adopting the seed selection of SCA combining ability test group to form, combination: safe white 113 * too white 101, maternal safe white 113 is second cycle lines that white 107 * Shen 219 forms through continuous selfed breeding, bred in 2003, male parent safe white 101 is the strains of the white grain of the single 981F2 choosing in academy of agricultural sciences, Shandong corn institute crossbreed Shandong, and the many generation seed selections in 2004 of selfing form continuously.