Method for improving quality and resistance of temperate zone corn varieties
A corn and variety technology, applied in the fields of botanical equipment and methods, plant genetic improvement, application, etc., can solve the problems of poor quality and weak resistance of corn.
Pending Publication Date: 2018-03-13
辽宁东亚农业发展有限公司
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AI Technical Summary
Problems solved by technology
[0003] In view of the deficiencies in the above problems, the present invention provides a method for improving the quality and resistance of temperate corn varieties, so as to solve the problems of poor quality and weak resistance of northern corn
Method used
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Experimental program
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Embodiment Construction
[0019] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with examples, but the examples given are not intended to limit the present invention.
[0020] Embodiments of the present invention include the following steps:
[0021] S10, selecting suitable corn varieties as parents, including male parents and female parents, the male parent is temperate dent type floury corn, and the female parent is tropical and subtropical corn;
[0022] S20, arable land arrangement, corn sowing;
[0023] Cultivated land preparation, land preparation before winter after the harvest of the previous stubble, deep application of mixed base fertilizer, evenly spreading 50kg of mixed fertilizer and 10kg of diammonium phosphate per mu per acre before winter preparation after harvest, and then subsoiling and preparation of the soil; corn seeding, stable soil temperature at 5cm...
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The invention provides a method for improving quality and resistance of temperate zone corn varieties, and relates to the technical field of corn breeding. The method comprises the following steps: proper corn varieties are selected as parents, which comprise a male parent and a female parent, the male parent is a temperate zone dent flour corn, and the female parent is a tropical and subtropicalzone corn; cultivated land is solidified and corns are sown; the male parent and the female parent are hybridized in order to generate progenies; the cultivated land is solidified and corns are sown;selfing is strictly carried out for progenies in order to generate F1 generation, 50 head progeny rows are selected, 30 strains are planted in each head progeny row, plantation density is set at 4500strain / mu, selfing is carried out, three plants which bloom in advance are selected in each head progeny row and are set as a first generation, and the steps are repeated in order to generate a secondgeneration; the cultivated land is solidified and corns are sown; selfing and backcross are carried out for the second generation, cluster types which are suitable for breeding direction are selected, and after eight generations, a target material is obtained. The method solves the technology problem that breeding materials in south and north have bad performance in three main breeding indices, such as dent grain, grain quality, and resistance.
Description
technical field [0001] The invention relates to the technical field of corn breeding, in particular to a method for improving the quality and resistance of temperate corn varieties. Background technique [0002] Corn plays an important role in my country's grain production. Corn production is directly related to China's food security. At present, most of the northern corn germplasm resources are dent-type rice with poor quality and serious degradation of resistance, while southern corn germplasm resources are resistant to Good sex and good rice quality, but shallow tooth grains lead to low yield of bred varieties, so it is particularly important to improve corn quality and resistance through hybridization, self-breeding and other breeding methods. Contents of the invention [0003] In view of the deficiencies in the above problems, the present invention provides a method for improving the quality and resistance of temperate corn varieties, so as to solve the problems of poo...
Claims
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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 王浩于学明王福清张军薛亮张鹏达高悦郑维山
Owner 辽宁东亚农业发展有限公司