Molecular marker linked with major quantitative trait locus (QTL) of hundred-kernel weight of arachis hypogaea and application of molecular marker

Abstract

The invention relates to the technical field of molecular genetics and crop molecular breeding, in particular to a molecular marker linked with a major quantitative trait locus (QTL) of the hundred-kernel weight of arachis hypogaea and application of molecular marker. The molecular marker includes a molecular marker Ah011476, and / or, a molecular marker Ah011478; the molecular marker Ah011476 is the 14206230 site on chromosome B06 of arachis hypogaea, and polymorphism is G or T; and the molecular marker Ah011478 is the 17650027 site on chromosome B06 on the arachis hypogaea, and polymorphism is C or A. According to the invention, the molecular markers linked with the arachis hypogaea hundred-kernel weight major QTL are obtained by screening, and the molecular markers can be used for effectively identifying the hundred-kernel weight of the arachis hypogaea, and are used for genetic improvement of the arachis hypogaea to obtain an arachis hypogaea variety with high hundred-kernel weight.

Description

technical field [0001] The invention relates to the technical fields of molecular genetics and crop molecular breeding, in particular to a molecular marker linked to a main effect QTL locus of peanut weight and its application. Background technique [0002] Peanut (Arachis hypogaea L.) is one of the most important oil crops and economic crops. It has a large planting area and high yield. It can be used for oil extraction and is one of the important sources of edible oil. Peanut is also an important raw material for food processing, and food consumption accounts for more than 35% of the total output. At present, increasing the yield per unit area is one of the effective ways to further increase the supply of peanut raw materials. Studies have shown that peanut kernel weight has the greatest impact on yield and is the most important peanut yield component factor. Therefore, it is of great importance to carry out the QTL mapping research on the kernel weight of peanuts, ident...

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Problems solved by technology

At present, scholars at home and abroad have some reports on the QTL mapping of peanut weight (Wang et al., 2019; Huang et al., 2015; Fonceka et al., 2012; Li et al., 2011; Ravi et al., 2011 ), but the QTL identified in these studies is usually too sparse due to the marker density, resulting in a large QTL interval identified, and the phenotypic contribution rate of the linked molecular markers is usually low. General effect

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