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Multi-ecological-area recurrent mixed selection - mixed planting cotton breeding method

A multi-ecological and reincarnation technology, applied in the field of breeding, can solve the problem that the wide applicability of newly bred cotton varieties needs to be improved, and achieve the effects of purity and consistency, high purity and variety of varieties.

Inactive Publication Date: 2012-03-21
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, in the field of cotton breeding, the wide adaptability of newly bred cotton varieties needs to be improved.

Method used

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  • Multi-ecological-area recurrent mixed selection - mixed planting cotton breeding method

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Experimental program
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Effect test

Embodiment 1

[0030] The 44 breeding process of China Cotton Research Institute in embodiment 1

[0031] The parental combination of Zhongmian Institute 44 is (Zhong2369×Tamcot CD3H)F 2 × China Cotton Institute 17. Among them, Zhong 2369 is the strain bred by the applicant, and its main characteristics are strong boll-setting and concentration; Tamcot CD3H comes from the United States and has good resistance to diseases and insect pests; Zhongmiansuo 17 is a high-yield and high-quality variety bred by the applicant.

[0032] In 1990, the hybrid combination 2369×Tamcot CD3H was prepared in the headquarters of China Cotton Research Institute in Anyang, Henan Province, and it was multiplied in the south in winter. 2 A single plant with high yield, disease resistance and salt resistance was selected and crossed with Zhongmian Institute 17. After winter propagation in the south, the combination was mixed in Anyang, Shangqiu, Dezhou, Cangzhou and other places in 1992. In 1993, 91 individual pla...

Embodiment 2

[0033] The 49 breeding process of China Cotton Institute in embodiment 2

[0034] The parental combination of Zhongmiansuo 49 is Zhongmiansuo 35×Zhong51504.

[0035] In 1995, a hybrid combination was prepared in our institute with Zhongmian Institute 35 as the female parent and Zhong 51504 as the male parent. In 1995, F 1 Substitute seeds were planted in 10 rows in Sanya Nanfan, Hainan in winter. In March 1996, a total of 4 kg of maize was harvested.

[0036] 1996 its F 2 0.2 mu were planted in Anyang, Shangqiu, Dezhou, Shandong, Cangzhou, Hebei, Kashi, Aksu and other places, and 0.1 mu was planted in Anyang Disease Nursery. In late September, 20-30 high-quality plants were harvested in each test site. Only 1-2 bolls were selected for each excellent plant, and all of them were returned to Anyang. They were mixed and planted in 20 rows in the south in winter, and the fibers were sent to the Cotton Quality Supervision, Inspection and Testing Center of the Ministry of Agricultu...

Embodiment 3

[0043] 75 breeding process of China Cotton Institute in embodiment 3

[0044] China Cotton Institute 75 is a transgenic insect-resistant hybrid cotton variety. The parental combination is Zhongmiansuo 41×Zhong 9425. China Cotton Research Institute 41 is a Bt+CpTI bivalent insect resistance gene introduced by the Cotton Research Institute of the Chinese Academy of Agricultural Sciences using the Institute of Biotechnology of the Chinese Academy of Agricultural Sciences. It was introduced into the China Cotton Research Institute 23 through the pollen tube method. In 2002, it was approved by the National Variety Approval Committee and obtained the safety certificate of agricultural genetically modified organisms for production and application in Shandong, Henan, Anhui, Hebei and other provinces. Zhong 9425 comes from China Cotton Research Institute 35× (Zhong 324×Soviet Union 8908), which is a high-quality and disease-resistant strain.

[0045] In 1995, a hybrid combination was...

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Abstract

The invention relates to the field of breeding and specifically relates to a multi-ecological-area recurrent mixed selection - mixed planting cotton breeding method, which comprises the following steps of: 1) preparing cotton hybridized combinations; 2) reproducing generation F1 hybrid seeds in the south for increasing the generation; 3) respectively sowing generation F2 seeds in cotton regions of the Yellow River Valley, the Yangtze River Valley and the northwest inland; 4) selecting generation F3 seeds of excellent individual plants and reproducing in the south for increasing the generation; 5) respectively sowing generation F4 seeds in the cotton regions of the Yellow River Valley, the Yangtze River Valley and the northwest inland; and 6) selecting generation F6 seeds of excellent individual plants, sowing the seeds in hybrid seed production fields and selecting excellent individual plants according to breeding purposes. The method provided by the invention complements a modified backcrossing and recurrent selection method and improves the yield, the quality and the insect resistance. The method has the advantages of high breeding efficiency, diversified varieties, high adaptability, high purity and good consistency, and lays a foundation for breeding better varieties in future.

Description

technical field [0001] The invention relates to the field of breeding, in particular, the invention relates to a multi-ecological zone recurrent mixed selection-mixed cotton breeding method. Background technique [0002] my country is a major cotton producing country in the world, and its total output accounts for about 25% of the world's cotton output, ranking first. Cotton planting has a long history and was planted in South China more than 2,000 years ago. It has a vast territory, starting from the Liaohe River Basin and the Yangtze River Delta in the east, extending to the west edge of the Tarim Basin in the west, starting from Yaxian County in Hainan in the south, and reaching the Manas River Basin in the north, between 18°-46°N and 76°-124°E. In this vast country, the requirements for cotton varieties vary from place to place. For this reason, in addition to the Cotton Research Institute of the Chinese Academy of Agricultural Sciences, which is a national institution...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 严根土黄群王香河苏桂兰席金锋许庆华
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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