Fig. 1
From: Characterization and transcriptome analysis of a dominant genic male sterile cotton mutant
Phenotypic characteristics of flowers and microscopic observations of anthers a. 0 DPA wild-type flower. b. 0 DPA Shida 98-6A (MS) flower. c. 0 DPA flowers without petals, the left three and right three are from WT and MS plants, respectively. d. The anthers of fertile (left) and MS (right) segregants under the light microscope. e-l. Comparison of anther development in the WT and MS. e. Section of fertile anthers at meiosis stage. f. Section of fertile anthers at tetrad stage. g. Section of fertile anthers at mononuclear and binuclear pollen stage. h. Section of fertile anthers at pollen maturation stage. i. Section of male sterile anthers at meiosis stage. j. Section of male sterile anthers at tetrad stage. k. Section of male sterile anthers at mononuclear and binuclear pollen stage. l. Section of fertile male sterile anthers at pollen maturation stage. e, epidermis; ML, middle layer; En, endothecium; T, tapetum; Msp, microspore; AT, abnormal tapetum; SP, spinules protruding; PG, pollen grain. Scale bars in c and d represent 1 cm and 1000 μm, respectively; scale bars in e and i represent 20 μm; scale bars in f, g, j and k represent 50 μm; scale bars in h and l represent 100 μm