CN105165594A - Breeding method of high-yield purple corn hybrid - Google Patents

Abstract

The invention relates to a breeding method of a high-yield purple corn hybrid. The planting density of the bred corn hybrid (Guangziyu No.36) is 3500-4500/666.7m<2>. The purple corn hybrid has the advantages of strong disease, lodging, drought and wind resistance, stay-green straws, sweet and waxy mouthfeel, excellent quality and wide suitable plantation range under the planting density.

Description

The selection of the purple corn hybrid seed of a kind of high yield

Technical field

The present invention relates to the selection of the purple corn hybrid seed of a kind of high yield.

Background technology

Corn, mostly is yellow, white, purple mixes in vain, yellowish-white blend color.Qarnet rice, the protophyte in Andes, just has high phenolic compounds and anthocyan.Anthocyan is blue red Protoapigenone, and be the source of the colors such as redness in plant, purple, aubergine and blueness, having non-oxidizability and anti-mutability, is potent antioxidant.Qarnet rice, through the supervision of Chinese agriculture grain quality, test center detects containing 18 seed amino acids, and containing 21 kinds of trace elements of needed by human and multivitamin and natural colouring matter, be rich in Anticancer Element Selenium selenium especially, promote intelligence element zinc and iron and calcium etc., and excellent taste, not only soft but also tender, skin is thin smooth slightly sticky, also has a kind of special delicate fragrance, so be a kind of superior natural beauty flavor nutrient health-care food with the food that Qarnet rice processes from strand.Though Qarnet rice is good, rod is little, grain is few, and output is not as good as traditional corn, and per mu yield only has 50-60 kilogram.Fine quality corn planting output is high, general per mu yield 850 kilograms, and high yield every mu can reach more than 1000 kilograms, but mouthfeel extreme difference, be only suitable for as food staple food, feed industry and liquor-making raw material.Therefore, not only high yield but also the good improved seeds corn of mouthfeel had become China's important subject in seed selection.

Summary of the invention

The object of the invention is to solve the problems referred to above existed, and provides the selection of the purple corn hybrid seed of a kind of high yield, and parental source female parent of the present invention is selected from honest 99 black glutinous No. 1 filial generations purple with Shanghai, forms through selfing separating stable; Male parent is selected from the filial generation of capital lavender agate No. 3 variants, forms through selfing separating stable.

The present invention includes following steps:

(1) Juvenile stage: female parent is selected from honest 99 and backcrosses with purple black glutinous No. 1 filial generation in Shanghai, selects elite plant strain selfing, select excellent pure strain after selfing in offspring, so experience backcrosses after three times and selects excellent female parent pure lines; Male parent is selected from after the pure lines Pacific Ocean 99 is hybridized with No. 3, pure lines capital lavender agate and backcrosses through going through three generations, selects elite plant strain, select excellent father pure lines through selfing in offspring;

(2) breed breeding: get the excellent pure line cultivar that step (2) screens, hybridize respectively, in the hybrid combination first generation of hybrid, select the improved seeds that affinity is strong, improved seeds are planted, select the high yield most improved seeds of the good corn hybridization of mouthfeel again;

(3) affinity measures: be sheerly with male parent 22 respectively by maternal 46 pure lines and hybridize, select the improved seeds that 184 affinity is strong in 1620 the hybrid combination first generation of hybrid;

(4) get step (3) will select improved seeds and plant, through screening superseded secondary kind, select top grade kind, top grade kind continues field plot test again, obtains the wide purple of optimum kind and educates No. 36.

The present invention has the following advantages:

1, the planting density of selecting and breeding corn crossbreed of the present invention (wide purple educates No. 36) can reach 3500-4500 plant/acre, and under this planting density, disease resistance is comparatively strong, Resistance To Helminthosporium Turcicum, helminthosporium maydis, smut, stem rot, short mosaic disease and banded sclerotial blight.When fresh fringe is gathered, stalk leafiness is green, and protect green degree well, stiff in straw, lodging resistance is strong.

2, disease-resistant, drought resisting, wind loading rating are strong, and premature senescence resistance ability is strong, straw staygreen.

3, fresh food quality is excellent, and sweet mouthfeel is glutinous, is applicable to popular edible.

4, best in quality, be applicable to planting range wide, plantation output is high, and general per mu yield 400 kilograms, high yield every mu can reach more than 500 kilograms.

Specific embodiment of the invention scheme is as follows:

One, Juvenile stage

1, female parent selection: maternal (numbering BH122) adopts pure lines honest 99 to backcross with purple black glutinous No. 1 filial generation in pure lines Shanghai, excellent 236 strain selfings are selected in offspring, 28 strains of excellent pure lines are selected and free pure lines hybridization backcrosses for three times after the selfing of 4 generations, again from 848 elite plant strains through the selfing of 4 generations, select excellent pure lines 56 female parent pure lines, measure and screening through affinity, select female parent (numbering BH122);

2, male parent is selected: male parent (numbering BH166) backcrosses through going through three generations after adopting the pure lines Pacific Ocean 99 and No. 3, pure lines capital lavender agate to hybridize, elite plant strain 258 is selected in offspring, excellent pure lines 22 male parent pure lines are selected through the selfing of 4 generations, through vitality test and screening, select male parent (numbering BH155);

3, get the excellent pure line cultivar that step 1,2 screens and be sheerly hybridization respectively, cultivate the selection of the purple corn hybrid seed of high yield.

Claims (1)

1. a selection for the purple corn hybrid seed of high yield, its feature has following steps:

(1) Juvenile stage: female parent is selected from honest 99 and backcrosses with purple black glutinous No. 1 filial generation in Shanghai, selects elite plant strain selfing, select excellent pure strain after selfing in offspring, so experience backcrosses after three times and selects excellent female parent pure lines; Male parent is selected from after the pure lines Pacific Ocean 99 is hybridized with No. 3, pure lines capital lavender agate and backcrosses through going through three generations, selects elite plant strain, select excellent father pure lines through selfing in offspring;

(2) breed breeding: get the excellent pure line cultivar that step (2) screens, hybridize respectively, in the hybrid combination first generation of hybrid, select the improved seeds that affinity is strong, improved seeds are planted, select the high yield most improved seeds of the good corn hybridization of mouthfeel again;

(3) affinity measures: be sheerly with male parent 22 respectively by maternal 46 pure lines and hybridize, select the improved seeds that 184 affinity is strong in 1620 the hybrid combination first generation of hybrid;

(4) get step (3) will select improved seeds and plant, through screening superseded secondary kind, select top grade kind, top grade kind continues field plot test again, obtains the wide purple of optimum kind and educates No. 36.