Method for breeding new varieties of wheat

A cultivating method and technology for new varieties, which are applied in the field of cultivating new varieties of wheat, can solve the problems of narrow genetic basis, damage of diseases and insect pests, and low yield of cultivars.

Inactive Publication Date: 2007-08-15
郑天存 +2
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Problems solved by technology

[0002] Henan Province is a major wheat producing province in my country. The planting area accounts for about 1/5 of the country's total output and the total output accounts for 1/4 of the country's total. changes, the damage of diseases and insect pests has increased, and lodging has occurred seriously. The wheat varieties originally planted in large areas were unable to meet the requirements of production development due to disease susceptibility, high stalks, and low yield levels. In the late 1980s, due to the extremely The emergence of a new physiological race of stripe rust dominated by No. 29 in Qiangtiaozhong has caused many new varieties (lin

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  • Method for breeding new varieties of wheat
  • Method for breeding new varieties of wheat

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[0011] According to the breeding program diagram shown in Figure 1, in the first year, the triticale Guangmai 74 with large spikes, disease resistance, high stalks, and late maturity was used as the female parent, and the common wheat with medium-low stalks, medium-early maturity, and high yield was used as the female parent. No. 1 was used as the male parent for artificial hybridization (A×B): both the female parent and the male parent were planted in 2 rows, the row length was 2m, the row spacing was 40cm×20cm, and the row spacing was 10cm. After the second day of tasseling of the female parent, 1 / 3 of the glumes of the wheat ears are manually cut off, and the male flower anthers are removed with tweezers. The three anthers of each floret must be completely removed. Listing, the name of the female parent and the date of emasculation are written on the listing. For the female parent Guangmai 74, a total of 10 ears were detasselled, each ear had 20 florets, and a total of 200 ...

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Abstract

The invention discloses a method for breeding new wheat variety, comprising following step: (1) selecting rye as female parent, low- medium stalk and high- quantity normal wheat as male parent, emasculating female parent artificially, pollinating male parent artificially repeatedly, preparing distant hybrid combination, and culturing distant first-filial generation; (2) taking distant first-filial generation as female parent, taking large panicle and disease-resistant normal wheat as male parent for second time hydration, getting second- time first-filial generation; (3) mutating seed of second- time first-filial generation with cobalt 60; (4) irradiating treated second- time first-filial generation for autocopulation of fourth generation; (5) selecting short stalk, large panicle and disease- resistant single plant from second- fourth generation got in step (4) to hybrid with wheat with complementary property, getting third time first-filial generation; (6) selecting short stalk, large panicle, disease- resistant, high- output single plant as breeding target, autocopulating the third time first-filial generation for five generations continuously, breeding and getting new short stalk, large panicle, disease- resistant, high- output wheat variety.

Description

technical field [0001] The invention belongs to the technical field of wheat breeding and relates to a method for cultivating new wheat varieties. Background technique [0002] Henan Province is a major wheat producing province in my country. The planting area accounts for about 1 / 5 of the country's total output and the total output accounts for 1 / 4 of the country's total. changes, the damage of diseases and insect pests has increased, and lodging has occurred seriously. The wheat varieties originally planted in large areas were unable to meet the requirements of production development due to disease susceptibility, high stalks, and low yield levels. In the late 1980s, due to the extremely The emergence of a new physiological race of stripe rust dominated by No. 29 in Qiangtiaozhong has caused many new varieties (lines) bred by using European "Luo" varieties as resistance sources to lose their resistance. In addition, the original non-important disease Such as powdery mildew, ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01H3/00A01H5/00
Inventor 郑天存李新平
Owner 郑天存
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