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Strong dominant rape combination

A technology of strong superiority combination and preparation method, applied in the fields of botanical equipment and methods, application, plant gene improvement, etc., can solve the problems of small genetic difference, weak heterosis, and difficulty in obtaining new hybrid varieties with strong superiority, etc. Large genetic distance, the effect of broadening the gene pool

Inactive Publication Date: 2005-07-27
SOUTHWEST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of narrow genetic basis of Brassica napus (especially Brassica napus) with small genetic differences between varieties and materials, low heterosis among each other, and difficulty in obtaining new hybrid varieties with strong dominance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] In 1999, a new material of Brassica oleracea K06 was obtained by crossing the yellow-seed line C108 of Brassica oleracea with the yellow-seed line y146 of Chinese cabbage-type rapeseed, culturing immature embryos, and artificially doubling; Hybridization of Brassica oleracea-type yellow-seed rape line SH23. The F1 generation was planted at the same density in the field for observation. In January 2003, 5 plants were taken to measure the fresh weight and dry weight of the plants. Compared with the common cabbage-type yellow-seed hybrid combination, the average fresh weight per plant was higher than that of the control 110%, and the average dry weight per plant was 73% higher than that of the control group; in May 2003, the grains were harvested by plots and tested on a single plant, and the yield of the plots was 37% higher than that of the control combination.

Embodiment 2

[0016] In 1999, a new material of Brassica oleracea K08 was obtained by crossing the yellow-seed line C108 of Brassica oleracea with the yellow-seed line y189 of Chinese cabbage-type rapeseed, culturing immature embryos and artificially doubling; Hybridization of Brassica napus line SH86, F1 generation planted at the same density in the field for observation, 10 plants were taken in January 2004 to measure the fresh weight and dry weight of the plants, compared with common cabbage-type yellow-seed hybrid combinations, the average fresh weight per plant was higher than that of the control 154%, and the average dry weight per plant was 79% higher than that of the control group; in May 2004, the grains were harvested by plots and tested on a single plant, and the yield of the plots was 42% higher than that of the control combination.

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Abstract

A process for preparing the strong dominance combination of cabbage-type yellow-seed rape C108 is disclosed, which can spread the gene bank of cabbage-type yellow-seed rape and can be used in selective culture of cabbage-type black-seed rape by strong dominance combination.

Description

technical field [0001] The invention relates to the technical field of crop breeding, in particular to a method for preparing a strong-dominant combination of Brassica-type yellow-seed rape. Background technique [0002] The type of rape planted in the main rape producing areas of the Yangtze River Basin in my country is mainly Brassica napus. The earliest Brassica napus originated in the Mediterranean region. It was naturally crossed and diploidized by local wild Brassica (B. campestris, 2n=AA=20) and wild cabbage (B. oleracea, 2n=CC=18) It was obtained later, and Brassica napus (Brassica napus, 2n=AACC=38), which is currently widely planted, was formed after long-term domestication by humans. Due to long-term artificial selection, many genes with potential application value have been lost, and the genetic basis has become narrower and narrower; and due to long-term cross-breeding, frequent gene exchanges between Brassica napus varieties have made the genetic differences b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 李加纳殷家明周清元谌利张学昆唐章林
Owner SOUTHWEST AGRICULTURAL UNIVERSITY