Molecular Marker Detection of Resistance Genes in 105 Tomato Germplasm Resources
Taking 105 tomato germplasm resources as test materials and the resistance gene molecular marker assisted screening method was used to investigate the distribution of 8 resistance genes,included Mi-1,I-2,Cf-9,Ph-3,Ty-1,Ty-3,Tm-2a and Sw,in 105 germplasm resources,in order to provide reference for the development of resistance gene polymerization breeding.The results showed that 28 materials contained Mi-1,60 materials containing I-2,80 materials containing Cf-9,34 materials containing Ph-3,19 materials containing Ty-1,11 materials containing Ty-3,47 materials containing Tm-2a,and 7 materials containing Sw.Among 105 tomato materials,3 tomato materials did not contain any resistance gene.There were 78 materials containing less than 3 resistance genes,accounting for 74.3％of the total materials.There were 9 materials containing 4 resistance genes.There were 11 materials containing 5 resistance genes.There were 6 materials containing 6 resistance genes,namely XIHJ-21-27,DT-27-43,722-ZT77,722-ZT79,494,495.One of the materials containing 7 resistance genes was XLJ-226-41.No tomato material containing 8 resistance genes at the same time was detected.
tomatoresistance genefunctional markerbreeding for disease resistance
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