Fig. 3
From: Studies of a rice sterile mutant sstl from the TRIM collection
Cytological observation of cross sections from developing anthers. a Anthers at young microspore stage (YM) with epidermis, endothecium, middle layer, and tapetum layers of SSTL-F and f, k sstl-s. b At vacuolated pollen stage (VP), when the microspores formed vacuolated in SSTL-F and g, l sstl-s. c At early pollen mitosis stage (EpM), when microspores went through the first mitosis and became bicellular pollen in SSTL-F and h, m sstl-s. d At late pollen mitosis stage (LpM), when microspores went through the second mitotic division for two sperm cells in SSTL-F and i, n sstl-s. e At mature pollen stage (Mp), when microspores were in the plump roundness shape of SSTL-F and j, o sstl-s. BP bicellular pollen, DP defective pollen, E epidermis, En endothecium, MP mature pollen, Msp microspore parietal cell, T tapetum. Bars = 80 μm