Breeding method for anti-sethoxydim fodder Setaria italica hybrid

Abstract

The invention relates to a breeding method for an anti-sethoxydim fodder Setaria italica hybrid. The method comprises the following steps: firstly, taking anti-sethoxydim wild Setaria anceps selected from a rice field as an original material, and carrying out selective breeding of 6 to 8 generations, so as to obtain a stable anti-sethoxydim Setaria italica line dedicated for fodder; then, hybridizing a male sterile line, which serves as a maternal plant, and the anti-sethoxydim Setaria italica line dedicated for fodder, which serves as a paternal plant, so as to obtain a hybrid strain; then, identifying the real hybrid rate of the hybrid strain; carrying out small-area planting on seeds, obtained after hybridizing, in next year in accordance with the density that 0.5kg to 1.0kg of real hybrid seeds are planted per mu, and selecting hybridized combinations which are resistant to sethoxydim and are high in straw yield and high in nutritional ingredient; and finally, hybridizing maternal plants and paternal plants of the selected hybridized combinations according to the hybridizing method, and harvesting hybrids, thereby obtaining the hybrid. The method disclosed by the invention is simple and easy in operation and stable in effect, is economical, efficient and sustainable and is applicable to popularization and application under the condition that labor is badly needed at present.

Description

technical field [0001] The invention belongs to the field of plant breeding, and in particular relates to a method for breeding millet hybrids resistant to net feed. Background technique [0002] Millet [Setaria italica (L.) Beauv.] is an ancient crop in my country. It has been used as a grain and feed crop in the history of domestication and cultivation for nearly 10,000 years. Military grass in ancient wars mostly refers to millet stalks after harvesting grain. Today, millet is still widely cultivated in the north as a grain and feed crop. In the Americas, Australia and some European countries, it is mostly cultivated as forage crops. As early as 1849, the U.S. Patent Office began to promote the cultivation of millet forage, and then it quickly developed into one of the forage crops, especially in rainfed agricultural areas and gradually became the main forage crop. At the beginning of the last century, many states in the United States carried out various experiments on ...

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Problems solved by technology

It mainly adopts conventional breeding, cultivation and screening techniques, and there are many problems in the selected varieties, such as: Chinese Academy of Agricultural Sciences has shortcomings such as lodging resistance and poor disease resistance; Inner Mongolia Academy of Agriculture and Animal Sciences bred Mongolian Jingu No. 1 has a straw height of 2 meters, but this variety is not resistant to close planting, and it is seriously lodging in Chengde, and the forage millet varieties obtained by the current method are not resistant to snatching, and manual weeding is required during the planting process, which increases the planting cost. Therefore, looking for a breeding, cultivation and screening technology, so that the cultivated forage millet has the characteristics of resistance to snagging, lodging resistance, disease resistance, more straw, large amount of grass, tolerance to dense planting, high nutritional value, and easy cultivation and management. Many advantages, it is very important

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