Abstract
A more extensive genetic map i soybean [Glycine max (L.) Merr.] would be useful in cytogenetic, genetic, and plant breeding studies. The efficiency of mapping studies can be increased by utilizing F2 populations that segregate for morphological and biochemical markers. The objective of this study was to determine if a chlorophyll‐deficient mutant (Y9) was linked to any of three other morphological traits and four biochemical markers. The morphological traits tested were root fluorescence (Fr1, Fr3), hypocotyl color (W1), and pubescence tip (Pb). The biochemical markers were seed coat peroxidase (Ep), isocitrate dehydrogenase (Idh2), aconitase (Aco4), and phosphoglucoisomerase (Pgi2). Linkage was detected between Y9 and Pb, and the pooled recombination value was calculated to be 27.3 ± 1.1%, based on combined F2 and F3 data. No other linkages were detected. This represents a new linkage group (Linkage Group 14) in soybean.
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