Simplifying cultivating millet variety breeding and its cultivating method

A cultivation method and variety technology are applied in the field of simplified cultivation of millet varieties and their supporting cultivation fields, which can solve problems such as non-resistance to herbicides, and achieve the effects of improving labor efficiency, improving technical content, and promoting industrialization development.

Inactive Publication Date: 2005-03-02
GRAIN RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, to provide a breeding method such as hybridization and backcrossing, which can realize chemical thinning and chemical weeding at the same time, solve the technical problems of millet thinning and weeding that rely on artificial thinning and artificial weeding, and realize Simplified cultivation of herbicide-resistant (single herbicide or two herbicide-resistant), non-herbicide-resistant (or single herbicide-resistant) isotype sister lines or near-isogenic lines, and mixed in a certain proportion to form a comprehensive Breeding of New Varieties of Mixed Varieties with Basically the Same Characters and Its Supporting Cultivation Methods

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0033] Breeding and cultivation of non-herbicide-resistant conventional varieties + cytoplasmic atrazine-resistant near-isogenic lines. The breeding method is to use conventional millet varieties as the male parent and the cytoplasmic atrazine-resistant millet variety as the female parent for sexual crossing. f 1 True hybrids can be identified according to the marker traits of the male parent, such as plant height, panicle shape, anther color, leaf sheath color, etc., or by molecular marker technology. And use conventional millet varieties as reincarnation parent (male parent) and hybrid F 1 Carry out 6 generations of backcrossing with the backcross offspring, spray atrazine before emergence after sowing in the separation generation, and select excellent individual plants with comprehensive traits close to the recurrent parent (male parent) before maturity, until the breeding of the recurrent parent's comprehensive traits is basically the same. near isogenic line. The cytop...

Embodiment 2

[0035] Breeding and cultivation of cytoplasmic atrazine-resistant strain + herbicide-resistant isotype sister line. The breeding method is to use conventional millet varieties as the male parent and the cytoplasmic atrazine-resistant millet variety as the female parent for sexual crossing. f 1 True hybrids can be identified according to the marker traits of the male parent, such as plant height, panicle shape, anther color, leaf sheath color, etc., or by molecular marker technology. f 2 Select excellent individual plants before the generation matures, and identify atrazine resistance at the seedling stage for part of the seeds harvested from each individual plant, eliminate individual plants that are not resistant to herbicides at all or all are resistant to herbicides, and leave isolated individual plants with resistance . from F 3 At the beginning of the new generation, individual plants were selected in excellent families before maturity, and part of the seeds harvested...

Embodiment 3

[0037] Breeding and cultivation of conventional millet variety + near isogenic line resistant to naprozine. The breeding method is to cross the conventional millet variety with the anti-napkin millet variety (reciprocal crossing is acceptable). f 1 Generation 3-5 leaf stage (3-leaf stage is the best) spray Napozine (15% EC, 0.15ml / m 2 , mixed with water 75ml), kill the false hybrids that are not resistant to Napo, and the surviving ones are true hybrids. Using conventional millet varieties as recurrent parent (male parent), and hybrid F 1 Backcross 6 generations with backcross offspring. The 3-5 leaf stage (the 3rd leaf stage is the best) of the separation generation was sprayed with Napozine, and the excellent individual plants with comprehensive traits close to the recurrent parents were selected before maturity, until the near-isogenic lines with the comprehensive traits basically consistent with the recurrent parents were bred. The near-isogenic line of anti-naprozine ...

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Abstract

The present invention discloses simplified millet variety breeding and matched cultivation process. The main contents include crossbreeding, back crossing and other measures to breed homotypic sister lines or near isogenic lines with herbicide resistance, without herbicide resistance or with resistance to different kinds of herbicide; mixing in certain proportion to form mixed variety with basically identical comprehensive characteristics; spraying specific herbicide to realize chemical thinning and chemical weeding. The said process can simplify cultivation of millet via eliminating manual thinning and weeding and realize the concentrative cultivation of millet in greatly raised work efficiency.

Description

technical field [0001] The invention relates to a millet variety selection and cultivation method, in particular to a simplified cultivation millet variety selection and cultivation method thereof. Background technique [0002] Millet (Setaria italica 2n=2X=18) is a small-grained semi-dense planting crop, with a thousand-grain weight of only about 3.0g, as many as 300,000 to 350,000 seeds per kilogram, and a suitable seedling density of 375,000 to 750,000 plants / hm 2 , the amount of seeds used is only 2.5~4.5kg / hm 2 about. Foreign small crops mainly adopt mechanical thinning technology. However, in my country, millet is mainly planted in hilly and mountainous areas, where mechanical operation is difficult. At the same time, due to the small size of millet grains, the weak seedlings need to exert their group soil-topping ability to ensure full seedlings, and too small sowing amount is not conducive to full seedlings. Therefore, for thousands of years, farmers in my countr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 程汝宏师志刚刘正理刁现民马峙英杜瑞恒夏雪岩
Owner GRAIN RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
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