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The genetic linkage map has been constructed with 125 SSR markers based on BC1:2 population consisting of 322 lines derived from the combination of (CML270×478) ×CML270 in maize (Zea mays L.), covering 1939.0 cM of maize genome. The average mapping distance was about 15.5 cM. Three major QTLs of the relative resistant index of re- sistance to maize sheath blight (Rhizoctonia solani) had been located on chromosomes 1, 7 by composite interval mapping (CIM). 7 QTLs of the plant height have been located on chromosomes 3, 4, 5, 6. Five QTLs of ear height have been located on chromosomes 3, 4, 6. The resistance to the sheath blight is shown to be not relative to plant height and ear height genetically. Inbred line CML270 was used for mo- lecular assisted selection and cloning the genes.
The genetic linkage map has been constructed with 125 SSR markers based on BC1: 2 population consisting of 322 lines derived from the combination of (CML270 × 478) × CML270 in maize (Zea mays L.), covering 1939.0 cM of maize genome. The Three major QTLs of the relative resistant index of re- sistance to maize sheath blight (Rhizoctonia solani) had been located on chromosomes 1, 7 by composite interval mapping (CIM). 7 QTLs of the plant height have been located on chromosomes 3, 4, 5, 6. Five QTLs of ear height have been located on chromosomes 3, 4, 6. The resistance to the sheath blight is shown to not relative plant height and ear height genetically. line CML270 was used for mo-lecular assisted selection and cloning the genes.