Advances in QTL Location of Chinese Cabbage (Brassica campestris L. ssp. Pekinensis)
Zhang Qingzhi1,2 Chen Zhende2 1 Laiyang Agricultural College, Qingdao, 266109; 2 Qingdao Agriculture Science Research Academy, Qingdao, 266100
Chinese cabbage (Brassica campestris L. ssp. Pekinensis) is one of the most important economic crop and extensive cultivated vegetables. It is very important significance to locate its main quantitative trait. Quantitative trait locus (QTL) is the place where the dominant quantitative trait's gene in the genome, and quantitative trait is controlled by polygene. The polygene system which controls quantitative trait was generally studied as a whole for a long time. Average and variance were used to reflect the heredity of quantitative trait. With the development of molecular biology, especially the appearance of molecular marker, it is possible to research single QTL function. To locate QTL, it is necessary to construct a saturated genetic linkage map. In the genetic linkage maps of Chinese cabbage that have been published so far, the main mapping population were F2?RIL and DH population, the method of molecular marker were mostly RFLP, RAPD and AFLP, genetic distance was from 519cM to 2 665.7cM. At present, the QTL location of Chinese cabbage mainly focus on character of configuration, character of agriculture, character of resistance disease and so on. This review discussed several problems in construct genetic maps and QTL location at present and prospects of QTL location in the future.
【CateGory Index】： S634.1