It appears in the Proceedings of the National Academy of Science, or PNAS, article «Identification of the VERNALIZATION 4 gene reveals the origin of spring growth habit in ancient wheats from South Asia.» (sciencedaily.com)
«These results show that cultivars with different growth habits respond similarly to volumetric water content thresholds, and that alteration of volumetric water content can be used for growth control,» the authors said. (sciencedaily.com)
Given that Dt2 is not the gene most closely related to AP1 and that semideterminacy is rarely seen in wild soybeans, Dt2 appears to be a recent gain - of - function mutation, which has modified the genetic pathways determining the stem growth habit in soybean. (plantcell.org)