A kind of seed production method of Brassica napus hybrid

A cabbage type and hybrid technology, applied in the fields of botanical equipment and methods, plant genetic improvement, horticulture, etc., can solve the problems of inconsistent growth process of rapeseed, increase the cost of seed production, miss the suitable spraying period, etc., and achieve the elimination of sterile lines. The effect of self-crossing is strong, labor saving and cost saving

Active Publication Date: 2020-10-16
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rapeseed is a dicotyledonous oil crop, so it is extremely sensitive to this type of herbicide, and different rapeseed varieties also have great differences in their tolerance.
(2) It is difficult to grasp the appropriate spraying time
Even for the same rapeseed variety, the growth process of rapeseed is inconsistent due to different fertility levels, soil moisture, and management levels, so the sensitivity to tribenuron-methyl is different.
(3) The spraying period of the agent is narrow
If there is continuous rainy weather during this period, the spraying will be postponed, but at this time, the suitable spraying period will be missed, which will seriously affect the chemical killing effect and the quality of seed production, and the most serious is the failure of seed production
(4) High technical requirements for spraying
Therefore, before harvesting the seeds on the female parent, the male parent needs to be harvested after separating the female parent in advance; even so, because the branches of the parent parent are staggered and the branches of rapeseed are relatively brittle at the mature stage, their branches are often cut when harvesting the male parent. Left over in female shoots causing confusion
At the same time, separate harvesting also greatly increases labor costs
All in all, operations such as separate harvesting of the parents not only increase the cost of seed production, but also put the purity of the hybrid at risk

Method used

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  • A kind of seed production method of Brassica napus hybrid
  • A kind of seed production method of Brassica napus hybrid
  • A kind of seed production method of Brassica napus hybrid

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Experimental program
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Effect test

Embodiment 1

[0034] Below in conjunction with the cultivation of some of our hybrid varieties (lines) and their seed production methods, the present invention will be specifically described. Embodiment 1 Cultivation and application of Ruiyou 501R

[0035] 1. Cultivation of rape female sterile lines (male parent) resistant to sulfonylurea herbicides

[0036] In 2010, the male parent 11-3034 (China Seed Industry, 2019 (5), 89-90) of the hybrid rape variety Ruiyou 501 (GPD rape (2018) 320253)) bred by our laboratory was used as the female parent. Some female sterile material FS-M1 (Chinese Journal of Oil Crops, 2003, 25(3): 12-15) was used as the male parent to get F1. F1 was planted in 2011, and the F1 was used as the female parent during the flowering period. The transgenic herbicide-resistant material M342 was crossed with the male parent to obtain the three-cross F1. After the herbicide resistance was identified at the seedling stage, a single plant with female sterility was selected at ...

Embodiment 2

[0066] Embodiment 2 The cultivation and application of Ningza 21R

[0067] Ningza 21 (Guojianyou 2010004) is a new double-low hybrid rapeseed variety bred from the new MICMS male sterile line Ning A7 as the female parent and the restorer line 05N336 as the male parent. In 2005, the variety tested the mating group and entered the yield appraisal test. In 2006, it participated in the preliminary test of new hybrid rapeseed varieties in Jiangsu Province. In 2007, it participated in the regional test of new hybrid rapeseed varieties in the lower reaches of the Yangtze River. In 2009, it passed the production test in the lower reaches of the Yangtze River. In 2010, it passed the national new variety approval and can be promoted in the lower reaches of the Yangtze River (Jiangsu Agricultural Science, 2017, 45(1): 89-92).

[0068] 1. Cultivation of rape female sterile line (male parent) 05N336R resistant to sulfonylurea herbicides

[0069] In 2010, the male parent 05N336 of the hybr...

Embodiment 3

[0097] Example 3 Identification of herbicide resistance of Ningza 21R and its herbicidal effect

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Abstract

The invention discloses a seed production method of cabbage type hybrid rape. According to the method, on the basis of an existing hybridization system, male parents are overlapped with female sterilecharacteristics and non-transgenic herbicide resistance characteristics of transformation rape, and the like. The former characteristic can ensure that the male parent can only bloom and provide normal pollen, but not fruit, so that the male parent and the female parent can be sown and harvested in a mixed mode in the seed production link; the latter characteristic can enable the true hybrid to have herbicide resistance, and a corresponding herbicide is sprayed in the hybrid production seedling stage, so that weeding is realized while false hybrid can be killed. By adoption of the method, thehybrid seeds are produced, the seed production yield is improved, the seed production cost is greatly reduced, the purity of the hybrid seeds can be guaranteed, the seed production risk is avoided, and the method is safe and efficient.

Description

technical field [0001] The invention belongs to the field of hybrid rape variety breeding and seed production, and in particular relates to a seed production method of Brassica napus hybrids. Background technique [0002] Rapeseed is the main oil crop in my country and one of the most important oil crops in the world. my country is one of the major producers of rapeseed in the world. The annual planting area of ​​rapeseed is about 100 million mu, and the annual output is about 10 million tons, both of which account for 1 / 4 of the total area and total output of rapeseed in the world. my country's rapeseed oil provides nearly 60% of domestic vegetable oil consumption, and it is truly the largest domestic oil (Liu Cheng, Feng Zhongchao, Xiao Tanghua, etc.. The development status, potential and countermeasures of my country's rapeseed industry. Chinese Journal of Oil Crops, 2019, 41(4):485-489). In recent years, domestic rapeseed oil has played an increasingly important role in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01G13/00A01G22/15
CPCA01G13/00A01G22/15A01H1/02
Inventor 龙卫华浦惠明胡茂龙高建芹张洁夫陈松付三雄彭琦陈锋周晓婴张维王晓东
Owner JIANGSU ACAD OF AGRI SCI
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