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Construction method of winter wheat flowering period simulation model based on multi-site genes

A technology for simulating models and building methods, applied in genomics, data processing applications, instruments, etc., can solve problems such as interaction effects, lack of model parameters in crop models, etc., and achieve the effect of performance improvement

Inactive Publication Date: 2022-05-13
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

Traditional process-based crop models lack the link between model parameters and genetic information, making it impossible to infer the response of wheat phenology development to genotype based on the interaction effect of environment

Method used

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  • Construction method of winter wheat flowering period simulation model based on multi-site genes
  • Construction method of winter wheat flowering period simulation model based on multi-site genes
  • Construction method of winter wheat flowering period simulation model based on multi-site genes

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specific Embodiment

[0099] Specific embodiments: the present invention selects winter wheat varieties with mapping photoperiod and vernalization alleles, selects 100 ecologically adaptable varieties in Beijing area for field experiments, adopts random block design, and sows in three consecutive years (2016-2019) in Shunyi, Beijing, See Table 5 for sowing treatments, and see the actual planting map figure 2 . The row length and row spacing of the plot were 200cm and 25cm respectively, and the on-demand sowing depth was 5cm. Each treatment was repeated three times, and the judgment was based on the flowering of more than 50% of the wheat spikelets in the whole area. The flowering dates of different varieties were measured (in the APSIM model, the flowering period of winter wheat is the date corresponding to the Zadok value of 65).

[0100] The final multilocus gene-based model included four genotype parameters (kv, kp, bv, and bp) and one breed parameter (TTFI, FL). The parameter values ​​of 100...

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Abstract

The invention discloses a construction method of a winter wheat flowering period simulation model based on multi-site genes, which comprises the following steps: determining a research area of winter wheat, and collecting different varieties of winter wheat planted in the area, corresponding genotypes, geographic parameters and meteorological parameters; according to the method, a flowering period simulation model based on a multi-locus gene (MLG) is constructed by associating alleles (Vrn-A1, Vrn-B1, Vrn-D1 and Ppd-D1) of a vernalization (Vrn) gene and a photoperiod (Ppd) gene with a growth period model parameter of a crop model (APSIM), so that the flowering period simulation model based on the multi-locus gene (MLG) is constructed, and the growth period model of the crop model (APSIM) is constructed based on the Vrn-A1, the Vrn-B1, the Vrn-D1 and the Ppd-D1 of the vernalization (Vrn) gene and the photoperiod (Ppd) gene. Compared with a foreign existing gene-based model, the method has the advantages that the performance in the aspect of predicting the flowering date of the wheat is obviously improved, and adaptive variety screening of the winter wheat is facilitated.

Description

technical field [0001] The invention relates to the technical field of quantitatively inferring the stability of flowering period of winter wheat, in particular to a method for constructing a simulation model of flowering period of winter wheat based on multi-locus genes. Background technique [0002] Anthesis is a critical period in the phenological development of winter wheat, an important turning point from vegetative growth to reproductive growth, and has an important impact on wheat yield. Regulating the flowering period of winter wheat is of great significance to ensure that winter wheat can maximize the use of local climate resources and obtain the highest winter wheat yield. [0003] The flowering period of winter wheat is mainly controlled by the response of three groups of genes, Vrn, Ppd and Eps, among which Vrn and Ppd are environment-dependent genes. role decision. Therefore, analyzing and quantitatively predicting the effect of different allelic combinations ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16B20/20G16B20/30G16B25/20G06Q50/02
CPCG16B20/20G16B20/30G16B25/20G06Q50/02
Inventor 贺勇
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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