Genomic and genetic basisof seed nutritional content in Eragrostistef
作者单位：Germplasm Bank of Wild SpeciesKunming Institute of BotanyChinese Academy of Sciences Department of GeneticsUniversity of Georgia Department of Plant Biologyand Institute of Plant BreedingGenetics and Genomics(Department of Crop and Soil Sciences)University of Georgia
会议名称：《2015中国遗传学会大会》
会议日期：2015年
学科分类：0710[理学-生物学] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种]
关 键 词：GBS ionomics mineral content QTL tef genomics
摘 要：Tef(Eragrostistef),a tetraploid grass,is the mainstay of Ethiopian agriculture,with more acres planted than in any other *** has one of the bestmineral contentsamong cereals,with similarly high levels only found in another Chloridoid cereal,fiuger *** has high resilience to both drought and waterlogged soils,but its yield is low due to tiny seed size and severe susceptibility to *** have used mutational and other genetic approaches to investigate and help solve these *** is very high in protein and iron,and has more calcium than mother’s ***,we have generated the1st high density genetic map using SNPs in our newly developed genotype-by-sequencing *** new map has2002 SNP markers fora 145-RIL population,and generated 20 major linkage groups sorted into A andB genomes of this *** anchored more than 73%sequences of tef genomic contigs and scaffolds in the SNP genetic map,and more sequences after combining a SSR map,meaning an accomplishment of tef *** have used this map to identify QTL associated mineral content.A total of19 QTL were identified from the analysis of twenty minerals in ***-seqanalysis of developing seeds revealed QTL genes involved in nutritional *** combined with two full genome sequence analyses that have recently been completed,these analyses should undercover candidate genes associated with these traits,thus suggesting routes towards further nutritional improvement of tef and other cereals.