Fig. 3

Morphological characteristics of osak3 mutant. a Plant phenotype of DJ and osak3 at the mature stage. From left to right are grain size (scale bar, 1 cm), panicles (scale bar, 3 cm), plant profile (scale bar, 20 cm), morphology of main axis, flag leaf, internodes. b Scanning electron microscopic observation of the spikelet glume cells of DJ and osak3. Scale bars, 100 μm. c, d Statistical data of plant height (c) and tiller number (d). Data are means ± SD (n = 10). P value compared with the wild type by student’s t test. e, f Statistical data of grain length (e) and grain width (f). Data are means ± SD (n = 30). P value compared with the wild type by student’s t test. g Statistical data of 1000-grain weight. Data are means ± SD (n = 5). P value compared with the wild type by student’s t test. h Statistical data of spikelet glume cell length. Data are means ± SD (n = 3). P value compared with the wild type by student’s t test