CN101243767A - Breeding method for heat-proof cucumber species Jinlv No. 4 - Google Patents

Abstract

The invention relates to a breeding method for a heat resistant new cucumber hybrid Jinlv No.4, which is characterized in that, the Jinlv No.4 hybrid is acquired by the hybridization of high generation inbred line Q24 as the female parent and high generation inbred line F15 as the male parent; after three years plot experiment, two years regional test and one year production test, the new cucumber hybrid Jinlv No.4 is bred. The breeding method has the advantages of high disease resistance; the hybrid is suitable to be grown on summer open field; stability performance is good; prolificacy is good; plants are compact and growth vigor is strong; the leaves are dark green; the main stem fruits most; the first female flower is on the 5th to 6th node; female flower node rate is around 40%; recovery cucumbers are numerous; side branches seal automatically after fruiting, so the hybrid is suitable for close planting; average early yield is 10% to 15% more than Jinchun No.4; average total yield is around 10% more than Jinchun No.4; the yield per hectare can achieve 75000kg; marketability is good; the fruit is straight and about 35cm in length; the color is dark green with obvious sting protuberances; the fruit is about 220g in weight; the fruit neck is short; the flesh is light green, crisp and sweet, and the quality is good.

Description

The selection that No. 4, heat-proof cucumber species Jinlv

Technical field

The invention belongs to the cultivation of variety of crops, the selection that No. 4, particularly a kind of heat-resisting new cucumber species Jinlv

Background technology

Cucumber is imported the history in existing more than 2,000 year of China's cultivation into, and domestication and human continuous selection through natural conditions have formed multiple cucumber type and kind.Especially since the sixties in this century, China's cucumber variety seed selection enters a new historical stage, various types of cucumber varieties have been bred successively, but the tailored version cucumber variety that is applicable to different crops for rotation is also few, the different crops for rotation of normal appearance can't be selected specific breed in the production, or have selected not give the damnous problem of producing to the kind of crops for rotation.Some problems of No. 4 existence such as grade of existing open country kind Tianjin spring as shortcomings such as kind of a sexual involution, poor heat resistance, have restricted the popularization of these kinds in the production, have also influenced vegetable grower's benefit.

Summary of the invention

The selection that the purpose of this invention is to provide No. 4, a kind of heat-proof cucumber species Jinlv is at producing the active demand of going up different planting form specific breeds, the heat-resisting cucumber variety of seed selection.Breeding solving the problem that cucumber open country in summer kind lacks of new varieties makes the vegetable grower select kind pointed, reduces blindness.

Concrete scheme of the present invention is:

The selection that No. 4, a kind of summer open country heat-proof cucumber species Jinlv:

One is to form good inbred line Q24 high temperature resistant, disease-resistant, high yield with the heat proof material of being introduced by Spain through transformation;

Another is that heat-resisting quantity is good, and product are of fine quality, and disease resistance is good, the inbred line F15 that coordinate force is good;

Inbred line F15 is made female parent, obtain green No. 4 kinds in Tianjin as paternal hybrid with inbred line Q24;

Through 3 years small plot experiments; Through 2 years regional tests and the test of annual product, finally breed green No. 4 new breeds of cucumbers in heat-resisting Tianjin again.This kind can normal growth under summer 36 ℃ of-38 ℃ of conditions, and indoor 40 ℃ of high temperature were handled two days down, and it is not obvious to be injured, and the good heat endurance energy is arranged.

Characteristics of the present invention and technique effect.

Green No. 4 of Tianjin, characteristics are that 1. disease resistance is strong: have parents' resistance originally, anti-blight, downy mildew and powdery mildew.The downy mildew disease index is than No. 4 reductions by 13.4% of open country main breed Tianjin spring, and the powdery mildew disease index reduces by 10.3%, the fusarium wilt incidence of disease low 17.5%.Be suitable for open country growth in summer, have good stable yields performance.2. yielding ability is good: the plant compactness, and growing way is strong; The leaf bottle green; Main climing knot melon is main, and the first female peanut is in 5-6 joint, female flower joint rate about 40%.Later melon is many, from binding, is suitable for dense planting after the side shoot knot melon.Average early yield is than Tianjin spring No. four increases 10-15%, and average gross yield is than No. four increases about 10% of Tianjin spring, and output per hectare can reach 75000 kilograms.3. commodity is good: sugar-preserved gourd is straight, and is long about 35 centimetres, the melon bottle green, and the rib knurl is obvious, and single melon weighs about 220 grams, and melon is short, and the pulp light green, matter is crisp, flavor is sweet, product are of fine quality.

Embodiment

The technical scheme of the seed selection that No. 4, heat-resisting new cucumber species Jinlv

Collect a large amount of domestic and international variety sources, taked multiple breeding method, prepared a large amount of hybrid combination, small plot experiment, regional test, production test have been carried out, bred Tianjin green No. 4, characteristics are that 1. disease resistance is strong: have parents' resistance originally, anti-blight, downy mildew and powdery mildew.The downy mildew disease index is than No. 4 reductions by 13.4% of open country main breed Tianjin spring, and the powdery mildew disease index reduces by 10.3%, the fusarium wilt incidence of disease low 17.5%.Has good stable yields performance.2. yielding ability is good: the plant compactness, and growing way is strong; The leaf bottle green; Main climing knot melon is main, and the first female peanut is in 5-6 joint, female flower joint rate about 40%.Later melon is many, from binding, is suitable for dense planting after the side shoot knot melon.Average early yield is than Tianjin spring No. four increases 10-15%, and average gross yield is than No. four increases about 10% of Tianjin spring, and output per hectare can reach 75000 kilograms.3. commodity is good: sugar-preserved gourd is straight, and is long about 35 centimetres, the melon bottle green, and the rib knurl is obvious, and single melon weighs about 220 grams, and melon is short, and the pulp light green, matter is crisp, flavor is sweet, product are of fine quality.And supporting culture technique and breeding technique have been formulated.

Material and parent's seed selection

Collected in 1992 surplus the variety source 100 both domestic and external part, and material carried out autotelic observation and screening, then these primary election materials are carried out selfing and separate also directed the selection, wherein select 2 parts in the material by Spain's introduction and shown the good temperature resistance energy, but sugar-preserved gourd and gardening proterties are not ideal, with these 2 parts of materials and existing good hybridization between selfed lines, investigate offspring's heat resistance, disease resistance, yielding ability and quality trait, and, breed good inbred line Q24 high temperature resistant, disease-resistant, high yield in conjunction with laboratory experiment.Another parent is high for inbred line F15.

Maternal F15 is a good inbred line high temperature resistant, disease-resistant, high yield.

Male parent Q24 is that heat-resisting quantity is good, and product are of fine quality, and disease resistance is good, the good inbred line that coordinate force is good.

Variety characteristic

Disease resistance is strong: have parents' resistance originally, anti-blight, downy mildew and powdery mildew.The downy mildew disease index is than No. 4 reductions by 13.4% of open country main breed Tianjin spring, and the powdery mildew disease index reduces by 10.3%, the fusarium wilt incidence of disease low 17.5%.Has good stable yields performance.

Yielding ability is good: the plant compactness, and growing way is strong; The leaf bottle green; Main climing knot melon is main, and the first female peanut is in 5-6 joint, female flower joint rate about 40%.Later melon is many, from binding, is suitable for dense planting after the side shoot knot melon.Average early yield is than Tianjin spring No. four increases 10-15%, and average gross yield is than No. four increases about 10% of Tianjin spring, and output per hectare can reach 75000 kilograms.

Commodity is good: sugar-preserved gourd is straight, and is long about 35 centimetres, the melon bottle green, and the rib knurl is obvious, and single melon weighs about 220 grams, and melon is short, and the pulp light green, matter is crisp, flavor is sweet, product are of fine quality.

The variety culture main points

Proper seeding, the general early March in North China was sowed to early April, seedling age 30-35 days.Mu 3500 strains of keeping a full stand of seedings; Precocity is gathered about 60-70 days from being seeded into.60-70 days picking time.If land is live, adopt plastic mulching, can improve early yield.

The high yield potentiality are big, need rich water also many, should improve output based on short.Use sufficient base fertilizer before the field planting, the root melon in time topdresses after sitting.Middle and later periods of gathering is strengthened the rich water amount, and carries out foliage spray.

The commodity melon is in time gathered, and avoids weighing down seedling, can improve middle and later periods output, reduces the generation of lopsided melon.

Middle and later periods is strengthened the extermination of disease and insect pest, mainly prevents and treats downy mildew, powdery mildew, aphid, two spotted spider mite, yellow tea mite etc.

Claims (1)

1. the selection of No. 4, a heat-proof cucumber species Jinlv:

One is to form good inbred line Q24 high temperature resistant, disease-resistant, high yield with the heat proof material of being introduced by Spain through transformation;

Another is that heat-resisting quantity is good, and product are of fine quality, and disease resistance is good, the inbred line F15 that coordinate force is good;

Inbred line F15 is made female parent, obtain green No. 4 kinds in Tianjin as paternal hybrid with inbred line Q24; Through 3 years small plot experiments; Through 2 years regional tests and the test of annual product, finally breed green No. 4 new breeds of cucumbers in heat-resisting Tianjin again.