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Planting method for identifying new corn strains and identification method for new corn strains

A technology of planting method and identification method, which is applied in the identification of new corn strains and the planting field of identification of new corn strains, can solve the problems of increased breeding costs, large land occupation, and complex genetics, so as to ensure integrity and guarantee Accuracy, the effect of guaranteed randomness

Active Publication Date: 2019-02-26
ZHANGYE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its complex heredity and rich variation types, there are shortcomings in the conventional breeding process, such as too long cycle, too large coefficient of variation, and affecting the growth and development of offspring.
, using modern biological breeding to solve the above problems, and at the same time, a large number of new corn lines have been obtained, but the relevant characters and properties of these new corn lines cannot be determined, and it is necessary to determine the conditions required for growth, genetic stability, and seedlings. traits, fruit traits, etc., and the existing technology is a plot test
There are mostly about 10,000 new corn strains obtained by hybridization every year, and the use of plot experiments for identification requires a large area of ​​land and is time-consuming and labor-intensive, which greatly increases the cost of breeding

Method used

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  • Planting method for identifying new corn strains and identification method for new corn strains
  • Planting method for identifying new corn strains and identification method for new corn strains
  • Planting method for identifying new corn strains and identification method for new corn strains

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The planting method for identifying new corn strains provided in this example includes: classifying all corn strains to be identified into early-maturing, mid-maturing, and late-maturing categories according to the number of parental leaves. In each class of maize lines to be identified, 7 lines were selected as the seeds for planting and numbered. The selected planting seeds are sorted according to the sowing rate of 2 seeds per hole, and the sorted planting seeds are put into seed bags and numbered. After sorting, the place where the seeds are planted is pre-designed at a planting density of 4800 plants / mu and a plant spacing of 25 cm on a plot of 20 meters * 30 meters. The number of seedling holes designed is 5 holes.

[0051] Then plow the planting land and fertilize for the first time at the same time, and the first fertilization is every 1000m 2 Apply 7200kg of decomposed sheep manure, 37kg of superphosphate, 17kg of urea, and 16kg of potassium sulfate. After s...

Embodiment 2

[0059] The planting method for identification of new corn strains provided in this example is basically the same as the planting method for identification of new corn lines provided in Example 1, except that the operating conditions are changed.

[0060] The seeds selected for planting in this embodiment are 7 corn lines to be identified at intervals, the number of seedling holes is 6, and each hole is 3 seeds for planting. The plot size is 18m*28m, the planting density is 4900 plants / mu, and the plant spacing is 23cm. The first fertilization is every 1000m 2 Apply 7500kg of decomposed sheep manure, 35kg of superphosphate, 12kg of urea, and 12kg of potassium sulfate. The second fertilization is every 1000m 2 Apply 75kg of diammonium phosphate and 80kg of urea. The irrigation volume is 1200m 3 / m 2 . From the jointing stage to the bell mouth stage at every 1000m 2 Topdressing 380kg of urea and 75kg of potassium sulfate; topdressing urea 220kg per 1000m2 after the silk-sp...

Embodiment 3

[0065]The planting method for identification of new corn strains provided in this example is basically the same as the planting method for identification of new corn lines provided in Example 1, except that the operating conditions are changed.

[0066] The planting seeds selected in this embodiment are 8 corn lines to be identified at intervals, the number of seedling holes is 7, and each hole is 2 planting seeds. The plot size is 22m*32m, the planting density is 5200 plants / mu, and the plant spacing is 22cm. The first fertilization is every 1000m 2 Apply 7800kg of decomposed sheep manure, 40kg of superphosphate, 18kg of urea, and 14kg of potassium sulfate. The second fertilization is every 1000m 2 Apply 80kg of diammonium phosphate and 75kg of urea. The irrigation volume is 1000m 3 / m 2 . From the jointing stage to the bell mouth stage at every 1000m 2 Ground topdressing urea 376kg and potassium sulfate 80kg; 2 Ground topdressing urea 250kg. After the seedlings matu...

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Abstract

The invention provides a planting method for new corn line identification and a new corn line identification method. According to the specific planting method, to-be-identified corn lines are divided into early-maturity, medium-maturity and late-maturity according to the blade number of parents; a plurality of to-be-planted corn lines are selected from each type of to-be-identified corn lines at intervals of multiple corn lines; the selected corresponding types of corn lines are planted in corresponding early-maturity planting area, medium-maturity planting area and late-maturity planting area. Each corn line planting land comprises 5-8 planting holes, and multiple planting holes of each to-be-planted corn line are separated and independent from multiple planting holes of adjacent to-be-planted corn lines. Seedlings obtained with the planting method are identified, and the identified seedlings are indirectly adjacent seedlings of two adjacent lines. The identification method is simple and rapid to operate, saves identification time and reduces breeding cost.

Description

technical field [0001] The invention relates to the field of agricultural planting, in particular to a planting method for identifying new corn strains and an identification method for new corn strains. Background technique [0002] Corn is an annual herbaceous plant of the grass family Zea genus. It is an important food crop and feed crop, and it is also the crop with the highest total output in the world. Its planting area and total output are second only to rice and wheat. Corn has always been known as a longevity food, rich in protein, fat, vitamins, trace elements, cellulose, etc., and has great potential for developing high-nutrition, high-biological function foods. However, due to its complex heritability and rich variety of variations, there are disadvantages in the conventional breeding process, such as too long cycle, too large coefficient of variation, and affecting the growth and development of offspring. , using modern biological breeding to solve the above pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/04A01G22/20
CPCA01G22/00A01H1/04
Inventor 王托和赵向田李雁民王长魁陈其泰白长富赵军
Owner ZHANGYE ACAD OF AGRI SCI
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