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Method for improving grain fullness of wheat photo-thermo-sensitive male sterile line by enhancing photosynthetic characteristics

A technology of photothermosensitive male sterile line and photosynthetic characteristics, which is applied in the field of improving grain plumpness of wheat photothermosensitive male sterile line, to achieve the effect of benefiting grain plumpness, photosynthetic characteristic improvement and good development

Inactive Publication Date: 2020-05-01
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on improving the grain plumpness of wheat photothermosensitive male sterile lines by improving photosynthetic characteristics

Method used

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  • Method for improving grain fullness of wheat photo-thermo-sensitive male sterile line by enhancing photosynthetic characteristics
  • Method for improving grain fullness of wheat photo-thermo-sensitive male sterile line by enhancing photosynthetic characteristics
  • Method for improving grain fullness of wheat photo-thermo-sensitive male sterile line by enhancing photosynthetic characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Correlation Analysis of Example 1 Grain Fullness and Photosynthetic Characteristics

[0015] (1) Beijing Shunyi CMS material planting

[0016] Taking wheat light-temperature-sensitive sterile lines BS104, BS138, BS1086, BS125, BS143, and BS366 as research materials, in Shunyi, Beijing (40°08′N, 116°39′E, 35m above sea level, which is the breeding area for sterile lines) Carry out the field test, the sowing time is October 10, the row length of the plot is 1.5m, 4 rows are planted, the row spacing is 20-25cm, the plant spacing is 3-5cm, and two repetitions are set.

[0017] (2) Detection of photosynthetic characteristics of wheat photothermosensitive male sterile lines

[0018] After wheat earing, 5 plants with the same leaf age were randomly selected for each material, and flag leaves with the same light receiving direction were selected, and the photosynthesis measurement system (LI-6400XT, Li-COR Company, USA) was used to measure the wheat in sunny and windless weath...

Embodiment 2

[0024] The impact of embodiment 2 sowing time on grain plumpness

[0025] (1) Phased sowing experiment in Shunyi, Beijing

[0026] Taking the wheat light-temperature-sensitive male sterile lines BS104, BS125, and BS366 as research materials, field experiments were carried out in Shunyi, Beijing (40°08′N, 116°39′E, 35m above sea level, which is the CMS breeding area). The dates are September 30, October 5, October 10, October 15 and October 20. The row length of the plot is 1.5m, 4 rows are planted, the row spacing is 25cm, the plant spacing is 3-5cm, and two repetitions are set.

[0027] (2) Field investigation

[0028] Before flowering, bag the main stem ear and 1-2 tiller ears of each plant, and investigate the number of spikelets and grains after maturity. Seed setting rate (%) = number of grains per ear / (number of spikelets×2)×100. According to the national regional test standards, the grain fullness is divided into five levels: full, relatively full, medium, underfull...

Embodiment 3

[0033] The influence of embodiment 3 sowing density on grain plumpness

[0034] (1) Seeding density test in Shunyi, Beijing

[0035] Field experiments were carried out in Shunyi, Beijing (40°08′N, 116°39′E, 35m above sea level, the CMS breeding area) with wheat light-temperature-sensitive male sterile lines BS366 and BS1086 as research materials, and the sowing time was October. 10th. 15m for each plot 2 , with two repetitions. Set the basic seedlings as 50,000 / mu, 100,000 / mu, 150,000 / mu, and 200,000 / mu.

[0036] (2) Field investigation

[0037] After maturity, the number of ears per mu, number of grains per ear, and thousand-grain weight were investigated, and the yield was measured. According to the national regional test standards, the grain fullness is divided into five levels: full, relatively full, medium, underfull, and flat, which are represented by 1, 2, 3, 4, and 5 respectively.

[0038] (3) Comparison of yield and grain plumpness at different sowing dates to d...

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Abstract

The invention relates to the technical field of agricultural breeding, in particular to a method for improving grain fullness of a wheat photo-thermo-sensitive male sterile line by enhancing photosynthetic characteristics. The method comprises the following steps: from October 10 to October 20, carrying out sowing in a male sterile line seed reproduction area, wherein the sowing density is 100,000-150,000 / mu. The photosynthetic characteristics of the BS series wheat photo-thermo-sensitive male sterile line in a filling stage are identified, the correlation between grain fullness and photosynthetic characteristics is analyzed, and the grain fullness of the wheat photo-thermo-sensitive male sterile line is improved by improving the photosynthetic characteristics, the breeding of excellent wheat photo-thermo-sensitive male sterile line is guided, and a theoretical basis is provided for high-quality hybrid wheat production.

Description

technical field [0001] The invention relates to the technical field of agricultural breeding, in particular to a method for improving grain plumpness of light-temperature-sensitive male sterile lines of wheat by improving photosynthetic characteristics. Background technique [0002] "China's two-line hybrid wheat technology system" is an original major agricultural scientific and technological achievement in my country with completely independent intellectual property rights and leading the world. This technology has low cost of seed production, wide range of recovery sources, and easy access to dominant combinations, and has gradually become the mainstream of international hybrid wheat research. At present, the research and application of hybrid wheat has made major breakthroughs and has entered the stage of rapid demonstration and application, making important contributions to improving the independent innovation capability of the national seed industry and ensuring the sa...

Claims

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Application Information

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IPC IPC(8): A01G22/20A01C21/00
CPCA01C21/00A01G22/20
Inventor 孙辉王永波张风廷赵昌平秦志列叶志杰任立平廖祥政
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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