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Different-place shuttling breeding method for early-maturing cabbage type rape variety and application thereof

A cabbage-type rape and cabbage-type technology, applied in the directions of application, botanical equipment and methods, plant genetic improvement, etc., can solve the problems of low income, supply rate less than 50%, high labor intensity, etc., and achieve rapid improvement, traits stable effect

Pending Publication Date: 2020-06-19
HANZHONG AGRI SCI INST SHAANXI RICE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Rapeseed is the main oilseed crop in China. Its perennial planting area and total output both rank first in the world. China’s annual output of rapeseed is about 4.5 million tons, accounting for 20% of the total domestically produced vegetable oil. However, in recent years, the supply rate of China’s self-produced vegetable oil is less than 50%. , and with the continuous improvement of people's living standards, the demand is still growing, and there is a huge gap in market demand. It is an urgent task for China to vigorously develop the production of oil crops. Increasing the planting area is the main production measure at present, but This measure has the defects of high investment, high labor intensity and low return

Method used

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  • Different-place shuttling breeding method for early-maturing cabbage type rape variety and application thereof

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Experimental program
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Effect test

Embodiment 1

[0032] Adopt embodiment 1 to obtain early maturing cabbage type conventional rape variety ZH16, the specific method is:

[0033] In the autumn of 2008, the late-maturing Brassica napus line H16 was planted in the greenhouse in Hanzhong, and covered with plastic film in the middle and late November of the next year. Planted in Huzhu County, Qinghai in the middle and late ten days. After flowering, continue to select early flowering and strong individual plants for bagging and self-bred. By 2010, after 3 years and 6 generations of off-site breeding, the early-maturing Brassica napus variety ZH16 was bred.

[0034] The early-maturing Brassica napus variety ZH16 matured 7 days earlier in the winter rapeseed area than before without improvement, and retained the high-yield, disease-resistant and other excellent traits of raw materials.

Embodiment 2

[0036] Example 2 was used to improve and select the maturity stage of the cytoplasmic male sterile line Han Z5A of Brassica napus and the restorer line ZC1R of Brassica napus, and to breed the early-maturing Brassica napus hybrid variety Hanyou 28. The specific method is as follows:

[0037] In the autumn of 2010, the medium-maturing Brassica napus cytoplasmic male sterile line Han 5A, the mid-maturing Brassica napus cytoplasmic male sterile maintainer line Han 5B, and the late-maturing Brassica napus cytoplasmic male sterile restorer line C1R were planted in the greenhouse in Hanzhong. Cover with plastic film in the middle and late ten days of the next year. In the early January of the following year, select Han 5B mid-early-flowering and strong single plants for bagging and self-bred as male parents, cross with Han 5A early-flowering strong sterile single plants, and select early-flowering and strong early-flowering single plants in C1R for bagging Selfing, harvest the above ...

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Abstract

The invention discloses a different-place shuttling breeding method for early-maturing cabbage type rape variety, which comprises the following steps: planting cabbage type rape in a winter cabbage type rape area in autumn, selecting early-flowering single plants with excellent comprehensive characters, bagging and selfing, harvesting early-maturing excellent cabbage type rape in the next year, planting in a field in a spring cabbage type rape area, and continuously bagging and selfing to harvest early-maturing; alternately shuttling, planting and selecting, and carrying out continuous selfingto obtain an early-maturing cabbage type rapestrain; taking the early-maturing cabbage type rape line as a male parent, taking cytoplasmic male sterile line rape as a female parent, carrying out backcross and test cross to breed an early-maturing cytoplasmic male sterile line and an early-maturing cytoplasmic male sterile restoring line, and hybridizing the early-maturing cytoplasmic male sterileline and the early-maturing cytoplasmic male sterile restoring line to obtain an early-maturing cabbage type hybrid rape variety; the maturity period of the early-maturing cabbage type rape bred by the method can be 5-10 days earlier than that of the cabbage type rape which is not improved, so that the method is a method for simply, conveniently and rapidly improving the maturity period of the cabbage type rape and cultivating the early-maturing cabbage type rape variety.

Description

technical field [0001] The invention relates to the technical field of crop breeding, and more specifically relates to a method for shuttling and breeding early-maturing Brassica napus varieties in different places and its application. Background technique [0002] Rapeseed, also known as oily cabbage, bitter vegetable, is a Brassicaceae and Brassica plant. It is native to my country. Its stems are dark green in color and the sides are like cabbage. It is a variety of Brassicaceae cabbage with yellow flowers. Rapeseed rape in my country can be divided into winter rapeseed and spring rapeseed. Spring rapeseed in my country is mainly distributed in Qinghai, Gansu, Xinjiang, Tibet, Inner Mongolia, Heilongjiang and other areas with low temperature and short frost-free period. Spring rapeseed has a short breeding period, but 90% of my country’s The above rapeseed is winter rapeseed, which is mainly distributed in the Yangtze River Basin and the Huanghuai River Basin. According to ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 李英谌国鹏郝兴顺王胜宝王风敏习广清薛艳孙晓敏陈乔邢丽红淡亚彬
Owner HANZHONG AGRI SCI INST SHAANXI RICE RES INST