Molecular marker of single fruit weight major quantitative trait loci (QTL) of August red pyrus L. fruits and application of molecular marker

A technology of molecular markers and single fruit weight, which is applied in the field of molecular genetic breeding, can solve problems such as lack of development, and achieve the effects of improved accuracy, good application value, and improved accuracy and efficiency
CN102154273AInactive Publication Date: 2011-08-17NANJING AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING AGRICULTURAL UNIVERSITY
Publication Date
2011-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of genetic breeding, and provides a molecular marker of single fruit weight major quantitative trait loci (QTL) of August red pyrus L. fruits and application of the molecular marker. The genetic linkage map of August red is constructed by using SRAP (sequence-related amplified polymorphism), SSR (simple sequence repeats) and AFLP (amplified fragment length polymorphism), phenotype identification on single fruit weight of pyrus L. is combined, and an interval mapping method is used to analyze linkage groups, thus major QTL is detected on the seventh linkage group of August red and can explain 30.9% of characteristics of single fruit weight. The point which is the nearest to the major QTL site Pfw-1 is marked to be EACAMCAC-2000m, and the nearest distance is 1.019cM. The obtained titratable acid major QTL molecular marker has significant theoretical and practical means for quickening genetic improvement process of pyrus L. varieties and improving breeding selection efficiency.
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Description

technical field

[0001] The invention belongs to the field of molecular genetic breeding. The invention relates to molecular markers and applications of the main effect QTL of 'August Red' pear fruit single fruit weight, which can be used for early molecular assisted selection of pear fruit single fruit weight traits to improve breeding efficiency. Background technique

[0002] Pear (Pyrus L.) is native to my country and is the third largest fruit tree species in my country. Pears are deeply loved by consumers because of their high nutritional value, sweetness and juiciness. Single fruit weight is not only an important factor affecting the appearance quality and commerciality of pear fruit, but also one of the important factors that constitute the yield and economic benefits of pear varieties. Therefore, the size of pear fruit single fruit weight is very important for pear varieties. Breeding varieties with ideal fruit weight has become one of the important goals of pear bre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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