CN1039180C

CN1039180C - Breeding method for hybrid corn with high-yield and protein of quality

Info

Publication number: CN1039180C
Application number: CN 94102552
Authority: CN
Inventors: 李维鼎
Original assignee: INSTITUTE OF CEREAL CROPS XINJIANG ACADEMY OF AGRICULTURAL SCIENCES
Current assignee: INSTITUTE OF CEREAL CROPS XINJIANG ACADEMY OF AGRICULTURAL SCIENCES
Priority date: 1994-03-18
Filing date: 1994-03-18
Publication date: 1998-07-22
Anticipated expiration: 2014-03-18
Also published as: CN1104419A

Abstract

The present invention relates to a breeding method for hybrid corn with high yield and protein of high quality. The method comprises the technical measures: the selection of a selfing line of high-lysine corn, the combination of hybrid and superior lines, seeding in a proper period, proper row pitch, safe isolation, the removal of impure and poor plants, artificial supplementary pollination, etc. B73(ZPL773) as a female parent and 202-1 as a male parent are used for preparing a corn hybrid called Xinyu No. 7. The lysine content of the corn hybrid is from 0.35 to 0.39%. Compared with the yield of a commercial variety SC704, the yield of the Xinyu No. 7 is increased by 10%, and the average yield is more than 700kg per unit in a large area.

Description

The selection of hybrid corn with high-yield and protein of quality

The present invention relates to a kind of selection of corn hybrid seed, belong to crop hybrid superiority and utilize technical field.

The high-quality protein maize breeding starts from 1964 in the world, and China starts from early seventies.High-quality protein maize claims high nutrient corn again, and lysine content is generally between 0.35-0.45%, and is higher more than 60% than conventional corn.1969, the U.S. bred first high-lysine corn crossbreed U-24 in the world, and then states such as the Soviet Union, Romania, Yugoslavia have bred Peter Krass Nuo Daer 303 Fu Er, HS ₃₃₀, HD ₃₁₀, BC ₃₀₂/ O ₂, ZPSC ₀₇₄/ O ₂, OSSYNT/O ₂Etc. kind.China has successively bred flat 203, the kinds such as new beautiful No. 6 of middle list 206, agricultural university 107, Shandong since the eighties.In order to improve O ₂The output of corn hybrid seed, the main direction of high-quality protein maize breeding is to cultivate the high-lysine corn crossbreed that endosperm is hard or semi-rigid (being called for short the Q.P.M crossbreed) on the our times.

Because high-quality protein maize is more extensive than conventional corn purposes, especially particular significant effect aspect nonruminants such as the pig of feeding, chicken is so the breeding high-yield high-quality protein maize hybrid can further improve the Maize Production level of China, greatly develop livestock breeding, favourable changing covered people's lives.The present invention just is being based on above-mentioned purpose, and a kind of grain of seed selection is raised the hybrid corn with high-yield and protein of quality of dual-purpose, uses in the agricultural production of China and goes.

A kind of selection of hybrid corn with high-yield and protein of quality comprises the assorted excellent combination of apolegamy, proper seeding, and suitable row ratio, safety is isolated, technical measures such as roguing and artificial supplementary pollination.The present invention is with B ₇₃(zpl773) being maternal, is male parent with 202-1, preparation Xinyu No.7 corn hybrid seed.

Proper seeding is meant that father and mother originally sow simultaneously.

Suitable row is than being meant the father: mother is 1: 4 or 1: 5.

The safety isolation is meant that production of hybrid seeds isolation distance is more than 300 meters.

Description of drawings:

Fig. 1: for Xinyu No.7 male parent 202-1 backcrosses, the general figure of inbred line

Fig. 2: be Xinyu No.7 hybrid combination figure

Advantage of the present invention and good effect are as follows:

Xinyu No.7 is in 1993 by the Xinjiang Corn Regional Test, by Xinjiang autonomous region farming article Plant validation board's authorization name. It is a high yield, high-quality, many anti-, adaptable in Late-maturing high-quality protein maize hybrid, lysine content 0.35-0.39% conforms to high nutrition jade The requirement of rice. Xinyu No.7 is fit to Xin Jiangnan, North SinKiang spring sowing and south about the 126 days time of infertility Boundary wheat paddock cover sowing planting. Xinyu No.7 output height, the average per unit area yield of large tracts of land be more than 700 kilograms, Than the local superior corn cenospecies SC that promotes₇₀₄Volume increase is more than 10%, and oneself records present high yield It is 1015 kilograms. It also is the high-quality protein maize hybrid that a grain is raised dual-purpose, and is of many uses.

Narrate embodiments of the invention below:

The hybrid combination of Xinyu No.7 corn single cross hybrid is B ₇₃(ZPL773) X202-1.Maternal B ₇₃(ZPL773) be to draw from Yugoslavic inbred line.Male parent 202-1 number is the inbred line of own seed selection, and back transformation becomes rich hard O ₂Inbred line.

Father and mother originally sow simultaneously during the Xinyu No.7 production of hybrid seeds.Father and mother's one's own profession ratio is 1: 4 or 1: 5.Flower synchronization, it is solid good to pollinate, and production of hybrid seeds isolation distance is more than 300 meters.

Xinyu No.7 plant type compactness, blade upper punch, suitable dense planting, medium fertility every mu of 4500-5000 strain in ground.Note beginning sowing in good time, every mu can be spread the red 1.5-2 kilogram control of furans soil insect before the whole ground, and red several of furans is spread in the every strain of typhon mouth phase, control of maize snout moth's larva harm effectively.

The feature of Xinyu No.7:

Plant height 280-290 centimetre, 130-150 centimetre of fringe position, blade 21-22 sheet; tassel branch 8-12, flower pesticide aubergine, filigree yellow green; the long cartridge type of fruit ear, does not have bald point by spike length 21-25 centimetre; thick 5.5 centimetres of fringe, head progeny row 18-22 is capable, row grain number 45-50 grain; marshalling, cob aubergine, seed yellow; the horse flute profile, about thousand kernel weight 300 grams, kernel productivity 85%.

Maternal B ₇₃(ZPL773) feature:

Seedling leaf sheath aubergine, plant height 240-260 centimetre, 90-100 centimetre of fringe position, 21-23 sheet leaf, blade is narrower, female fringe upper blade upper punch, the bottom is open and flat slightly, and blade is dark green.Tassel branch 9-11, compactness is shorter, flower pesticide yellow green, filigree pistac, fruit ear garden cartridge type, long 13.5-14 centimetre; thick 4.5 centimetres of fringe, seed 18 row, cob redness, seed yellow, half horse flute profile; thousand kernel weight 254 grams, about 130 days breeding times, cane is hard, and is anti-, anti-smut.

Male parent 202-1 feature:

Seedling leaf sheath purple.Plant height 170-180 centimetre, 95-106 centimetre of fringe position, 20-22 sheet leaf, leaf is light green; more roomy, female fringe upper blade upper punch, tassel prosperity, 13-15 branch; pollen amount is big, flower pesticide aubergine, filigree light green, fruit ear cartridge type; long 16-18 centimetre, cob redness, seed yellow, horse flute profile; rely amino acid content 0.497%, the heavy 210-240 gram of dry granular, about 130 days breeding times, anti-; anti-fringe Maize Ear Rot, smut, drought resisting.

Claims

1, a kind of selection of hybrid corn with high-yield and protein of quality comprises the assorted excellent combination of apolegamy, proper seeding, suitable row ratio, safe isolation, roguing and artificial supplementary pollination measure, it is characterized in that: with B ₇₃(ZPL773) being maternal, is male parent with 202-1, preparation Xinyu No.7 corn hybrid seed.

2, selection according to claim 1 is characterized in that: proper seeding is meant that father and mother originally sow simultaneously.

3, selection according to claim 1 is characterized in that: suitable row is than being meant the father: mother is 1: 4 or 1: 5.

4, selection according to claim 1 is characterized in that: the safety isolation is meant that production of hybrid seeds isolation distance is more than 300 meters.