Enhanced growth phenotype of MSH1 lines in sorghum.

The transgene and crossing procedure used to derive sorghum populations is indicated. (A) The phenotype of the F1 progeny derived from crossing Tx430×MSH1-dr. (B) Field grown F2, F3 and F4 sorghum lines show variation in plant architecture and height. (C) Panicles from Tx430 (on left, 66 g, 8 mm stem) versus a larger F2 individual (on right, 112 g, 11 mm stem), and (D) seed yield after threshing. (E) The MSH1-dr sorghum phenotype under field conditions. (F) Sorghum MSH1 F2, F3 and F4 populations grown in progeny rows in a 2011 field experiment. Wild type inbred Tx430 is indicated. Variation in plant height, flowering time and plant architecture is apparent; all plants shown are non-transgenic and Tx430 genotype.