New sources of aphid resistance in soybean plants

A soybean plant comprising germplasm

• (a) derived from soybean plant line E12902, whose seed was deposited under ATCC accession No:
• PTA-120715;
• (b) derived from soybean plant line PI 567537 chromosomal region 16 (Rag3b) region that is located between marker pair Sat—339 and Satt596;
• (c) derived from soybean plant cultivar PI 567585A chromosomal 16 region located between a marker pair Satt674 and Satt215;
• or
• (d) or a combination thereof;
• wherein said soybean plant is not a wild type Glycine (G.) soja soybean plant line, a wild type soybean PI 567537 plant, a wild type soybean PI 567585 A plant, a wild type soybean PI 567598 B plant, a wild type soybean PI 567543 C plant, a wild type soybean PI 567541 B plant, or a wild type soybean PI 567597 C plant.

A soybean seed comprising germplasm

• (a) derived from soybean plant line E12902, whose seed was deposited under ATCC accession No:
• PTA-120715;
• (b) derived from soybean plant line PI 567537 chromosomal region 16 (Rag3b) region that is located between marker pair Sat—339 and Satt596;
• (c) derived from soybean plant cultivar PI 567585A chromosomal 16 region located between a marker pair Satt674 and Satt215;
• or
• (d) or a combination thereof.

A method of identifying a marker for aphid resistance, comprising:

• a) providing,
• i) a first soybean plant germplasm, wherein said germplasm comprises nucleic acid sequences isolated from a soybean plant having a phenotype of aphid resistance selected from the group consisting of soybean plant line E12902 whose progeny seed was deposited under ATCC accession No. PTA-120715, accession PI 567585A, accession PI 567537, and progeny thereof, and
• ii) a second soybean plant germplasm, wherein said germplasm comprises nucleic acid sequences isolated from a soybean plant having less aphid resistance than the first soybean plant, and
• b) identifying a molecular marker on said first soybean plant germplasm that is not on said second soybean plant germplasm.