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Brown stem rot (BSR) of soybean [Glycine max (L.) Merr.], caused by Phialophora gregata, is an economically important disease prevalent in soybean producing regions of the northcentral U.S. and Canada. To date, all BSR resistant genes identified are located on chromosome 16 (formerly molecular linkage group J). The objective of this study was to determine if four plant introductions (PI) from south-central China identified as BSRresistant have resistance genes mapping to the same location on chromosome 16 as previously mapped BSR resistance genes. The four plant introductions, PI 594637, PI 594638B, PI 594650A, and PI 594858B were crossed to the BSR-susceptible cultivar ‘Century 84’ to develop four F2 populations. Each segregating population and the parental lines were screened for BSR resistance in growth chamber conditions. The F2:3 individual plants of each population were tested with the simple sequence repeat (SSR) markers Satt431

Soybean improvement strategies: Insect-pollinator attraction and genetic resistance to whitefly and to brown stem rot