Fig. 2
From: Studies of a rice sterile mutant sstl from the TRIM collection
Floral morphology of fertile and sterile plants from sstl offspring. a The floral structure between SSTL-F (left) and sstl-s (right) at heading stage. Bar = 1 mm. b The exterior of anther in SSTL-F (above) and sstl-s (below). Bar = 0.4 mm. c Mature pollen was presented after chopping the anthers of SSTL-F (above) and sstl-s (below). Bar = 0.4 mm. d Filament elongation of SSTL-F (left) and sstl-s (right) during anthesis. Bar = 1 mm. e, g, i SEM observation of SSTL-F and f, h, j sstl-s in anther and pollen. e, f Bar = 0.2 mm; g–j bar = 50 μm. k I2KI staining of SSTL-F (left) and sstl-s (right). Bar = 200 μm. l Pollen viability in different maturity types of SSTL-F, sstl-ss, and sstl-s. an anther, fi filament, le lemma, lo lodicule, pa palea