QTL Analysis for Fruit Shape in Eggplant Based on Genetic Linkage Map

ACTA HORTICULTURAE SINICA ›› 2012, Vol. 39 ›› Issue (6): 1115-1122.

• Vegetables • Previous Articles Next Articles

QTL Analysis for Fruit Shape in Eggplant Based on Genetic Linkage Map

QIAO Jun, CHEN Yu-Hui, WANG Li-Ying, LIU Fu-Zhong, ZHANG Ying, LIAN Yong

（1Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Beijing 100081；2Tianjin Kernel Vegetable Research Institute，Tianjin 300384，China）

Online:2012-06-25 Published:2012-06-25

Abstract

Abstract: An AFLP and SSR genetic linkage map was constructed in eggplant（Solanum melongena L.）with an intraspecific F₂ population derived from a cross between the round eggplant inbred line‘106’and the long eggplant inbred line‘113’. The generated map consisted of 15 linkage groups with 85 AFLP markers and 23 SSR markers，a total coverage of 1 007.9 cM and an average interval of 9.3 cM. The markers distributed randomly across the groups and could be done preliminary QTL mapping in MQM using MapQTL4.0. Two QTLs for fruit shape index were in the 1st and 12th linkage group, and explained 20.8% and 41.5% of phenotypic variances；Five QTLs for fruit length were in the 1st，8th，11th，12th and 14th linkage group，and explained 16.5%，36.8%，9.8%，45.0% and 41.9% phenotypic variances；And two QTLs for fruit width were detected in the 1st and 5th linkage group explaining 16.2% and 15.8% of phenotypic variances. QTLs for fruit shape index，fruit length and fruit diameter were located in the 1st linkage group，and their distance was 3.5 cM with the AFLP marker M23E21B which was closely linked to the fruit shape traits.

Key words: eggplant, fruit shape, genetic linkage map, QTL

CLC Number:

S 641.1

QIAO Jun, CHEN Yu-Hui, WANG Li-Ying, LIU Fu-Zhong, ZHANG Ying, LIAN Yong. QTL Analysis for Fruit Shape in Eggplant Based on Genetic Linkage Map[J]. ACTA HORTICULTURAE SINICA, 2012, 39(6): 1115-1122.

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QTL Analysis for Fruit Shape in Eggplant Based on Genetic Linkage Map

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