【摘 要】
：
Clubroot,caused by Plasmodiophora brassicae Wor.,is one of the most serious diseases affecting Brassica crops production worldwide.Quantitative trait loci(QTLs)for resistance to clubroot disease were
【机 构】
：
College of Horticulture,Shenyang Agricultural University,Shenyang 110866,China
【出 处】
：
第十九届国际十字花科遗传学会及芸薹属2014年年会
论文部分内容阅读
Clubroot,caused by Plasmodiophora brassicae Wor.,is one of the most serious diseases affecting Brassica crops production worldwide.Quantitative trait loci(QTLs)for resistance to clubroot disease were studied using a F2:3 populations derived from a cross between clubroot resistant(CR)turnip inbred line SG(Brassica rapa ssp.rapifera)and a clubroot susceptible inbred line of Chinese cabbage BJN(B.rapa ssp.pekinensis).F3 families were inoculated with the isolates of Pb4 and Pb10 and their combination(Pb4+Pb10)under controlled conditions.A total of 4 QTLs,including 1 QTL detected by Pb4,2 QTLs by Pb10,and 1 QTL by Pb4+Pb10,were detected on chromosome A3 and A8 of B.rapa.These QTLs were assigned to two chromosomal regions where two CR genes Crr1 and CRb were identified in the previous studies.One QTL co-localized with the CRb locus was common for resistance to all isolates tested,but contributed different effects to isolate Pb4,Pb10,and Pb4+Pb10.Another QTL mapped in the region of Crr1 showed isolate-specific resistance to Pb10.Additionally,epistatic interaction between CR QTL and non QTL region or between two CR QTL regions with additive effects was detected by isolate Pb4 and Pb4+Pb10.Identification of CR QTLs and genetic effects to clubroot disease will be informative for clubroot resistant breeding in Brassica crops.
其他文献
Oilseed rape (Brassica napus L.,genome AACC,2n = 38) has a narrow genetic base and suffers heavy yield losses caused by Sclerotinia sclerotiorum.In this study we used a hexaploidisation strategy to di
Most studies of screening waterlogging tolerance were performed at a specific development stage,with the implicit assumption that differences in waterlogging tolerance expressed in these systems will
Raphanus sativus L.could be interesting as source for introgressions of resistance genes against different pathogenes,but also against abiotic stress.A complete set (a-i) of disomic rapeseed-radish ch
In order to establish DNA fingerprinting to identify the purity of cabbage hybrid,the genomic DNAs of 4 hybrids(Xiaguang,Zaoxia 16,Zhengchun,Hanguang 2)and its parents were used as group of template D
The head of cabbage is vulnerable to crack in the later stage of vegetative growth.Quality of appearance,yield and storability were seriously affected by this.The identification of resistance to head
Drought is one of the important factors influencing rapeseed yield and quality.Recombinant inbred line(RIL)population of Brassica napus L.was derived from the cross of female parent 36-Ai and male par
Sclerotinia stem rot disease is a significant threat for growing rapeseed (Brassica napus) around the world.Despite intense research within the B.napus species for several years,no varieties with sati
A doubled-haploid (DH) population containing 115 lines was derived from a cross between a European winter growth habit Brassica napus cultivar and an Australian spring growth habit Brassica napus cult
The use of clubroot resistance(CR)genes is an effective and economical approach to control Plasmodiophora brassicae,the causal agent of clubroot disease in Brassica rapa and other Brassica crops.In th
Blackleg,caused by Leptosphaeria maculans,is one of the most devastating diseases in B.napus production in Australia,Canada and Europe.Development of Blackleg resistant canola varieties is the most ef