Method for evaluating auxiliary rice breeding by using lodging resistance indexes

An index and rice technology, which is applied in the field of using lodging resistance index to evaluate auxiliary rice breeding, can solve problems such as rice lodging, and achieve the effects of convenient operation, broad application prospects, wide adaptability and stress resistance

Inactive Publication Date: 2016-10-26
SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of rice lodging, the present invention proposes a method for evaluating and assisting rice breeding by using lodging resistance index

Method used

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  • Method for evaluating auxiliary rice breeding by using lodging resistance indexes
  • Method for evaluating auxiliary rice breeding by using lodging resistance indexes
  • Method for evaluating auxiliary rice breeding by using lodging resistance indexes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] The specific implementation process of the final selection of the new strain 15-89 is enumerated below

[0058] 1) Selection of new strains participating in the product comparison test

[0059] Select stable high-generation materials with high-yield traits F5 or higher in the stable high-generation identification nursery. Each line is single-collected and single-shedding, and enters the indoor rice quality identification. The chalky grain rate ≤ 30% and good transparency are selected, and 20 lines are selected. These materials will continue to enter the next year's comparison test.

[0060] 2) Transplanting a single plant of the new line participating in the comparison test

[0061] For the final selection of new strains, seedlings are transplanted for single planting, and each plot is 13.3 m 2 , 8-row area, 50 plants per row; fertilizer management: the whole growth period is equivalent to applying pure N18 kg per mu, P 2 o 5 8 kg, K 2 O 8 kg, the ratio of N ferti...

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Abstract

The invention discloses a method for evaluating auxiliary rice breeding by using lodging resistance indexes. Through good parent hybridization matching, an F1 hybrid filial generation is obtained, and through field selection and multiple generation purification, a stable strain is obtained. Through new strain selection, new strain raised-seedling transplanting single plant transplanting, average tiller number determination, strain sampling, single plant pressure and intensity determination, bending moment determination, and bending resistance force determination, and lodging indexes are calculated, so that the breeding quality is evaluated; and varied factors of the yield, the resistance, the rice quality, the lodging resistance and the like of new strains in comparison tests are synthesized, so that new strains are cultivated, the lodging resistance indexes are quantified, and anthropogenic factors are eliminated.

Description

technical field [0001] The invention relates to a rice breeding method, in particular to a method for evaluating and assisting rice breeding by using lodging resistance index. Background technique [0002] Large-scale direct seeding of rice can save a lot of labor and alleviate the contradiction of labor seasonal tension. It is of great significance to realize light, professional and large-scale rice production, and has broad prospects for promotion. However, compared with transplanted rice, direct-seeding rice has three major problems: hard seedlings, heavy weed damage, and easy lodging. The existing technology generally strengthens field management and cannot fundamentally solve the problem of rice lodging. [0003] The area of ​​medium-maturity and medium-japonica rice in the Huaibei region of Jiangsu Province is 15 million mu. The area of ​​light and simplified direct-seeding rice cultivation is getting larger and larger. The root system of rice is shallow, and the lodgi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/00A01G16/00G01N3/20A01G22/22
CPCA01G7/00A01G22/22G01N3/20
Inventor 陈卫军赖上坤陈春王磊
Owner SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI
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