Breeding method for anti-sethoxydim fodder Setaria italica hybrid
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A technology of anti-nachai and hybrid species, applied in the field of hybrid breeding of millet for forage in anti-nag, can solve the problems of lodging resistance, poor disease resistance, increased planting cost, non-resistant to Nachae, etc., and the method is simple and easy to operate. , the effect is stable, the effect of more straw
Active Publication Date: 2016-08-17
GRAIN RES INST HEBEI ACAD OF AGRI & FORESTRY SCI +2
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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 ...
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Embodiment 1
[0033] The anti-napling net forage special grain weed is selected by a method including the following steps:
[0034] Step a, seed selection: In 2010, from Wu'an, Handan, planted Jigu 31, a variety of millet resistant to natrap, for more than two consecutive years, and sprayed it in the field of natrap, collected the associated weeds of millet, weeds, and waited for it to set ears. Collect the ears, dry and thresh, and store the seeds of each plant of Strigales as a raw material, each of which is packed into a bag, and collect 35 parts in total for sowing in the second year; The mass concentration of Nabunet applied is 12.5%, and the spraying rate is 80-100mL / mu;
[0035] Step b, domestication:
[0036] (1), select the sandy soil land with organic matter content greater than 10g / kg, total nitrogen content greater than 0.5g / kg, available phosphorus content greater than 5mg / kg, and available potassium content greater than 84mg / kg, and use 30kg of compound fertilizer as base fer...
Embodiment 2
[0044] The method for breeding millet hybrids for feeding against Nabujing specifically comprises the following steps:
[0045] Step 1, hybridization: use the male sterile line as the female parent, and the special millet line for anti-napling forage grass as the male parent for hybridization, and the male sterile line or the special millet line for anti-napling forage grass are different to form different hybrid combinations; The breeding steps of the male sterile line include: selecting a naturally variated sterile individual plant from the bred varieties or lines, and selecting a stable sterile variety or line with a higher degree of sterility through 6-8 generations of systematic breeding. , that is. In addition, the male sterile line can also be obtained by methods such as radiation breeding or chemical male killing;
[0046] A, 18 parts of the special millet strains of the anti-nap net forage grass selected in embodiment 1 and 3 parts of the male sterile lines are combi...
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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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IPC IPC(8): A01H1/02A01H1/04A01G1/00
CPCA01G22/00A01H1/02A01H1/04
Inventor 夏雪岩程汝宏李顺国刘猛任晓利宋世佳赵宇刘斐南春梅
Owner GRAIN RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
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