Abstract
A genic male sterile Chinese cabbage, Brassica campestris L. ssp. chinensis Makino, was examined using cytological and cytochemical methods to characterize the process of pollen abortion in this plant. Thick sections of both fertile and sterile anthers at different developmental stages were stained using Toluidine Blue O, Periodic Acid-Schiff’s (PAS) reaction and Sudan Black B to detect cytochemical changes that may occur in the distribution of insoluble polysaccharide and lipid storage bodies. Pollen abortion in sterile anthers occurs at an early stage of microspore development. During early microspore development, reductions in the number of starch grains in the connective tissue of fertile anthers coincide with the accumulation of starch grains in cells of the anther wall. In the late microspore stage, a large vacuole forms in the microspore, and tapetal cells synthesize and accumulate lipid droplets. The cellular organization of tapetal cells in sterile anthers appears similar to that in fertile anthers, except for the absence of lipid droplets in cells of sterile anthers and diffusely labeled tapetal polysaccharides, suggesting defects in nutrient storage.
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This work was supported by the National Natural Science Foundation of CHINA (30170060).
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Supported by National Natural Science Foundation of CHINA (30170060)
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Xie, C., Yang, Y., Qiu, Y. et al. Cytochemical investigation of genic male-sterility in Chinese cabbage. Sex Plant Reprod 18, 75–80 (2005). https://doi.org/10.1007/s00497-005-0001-5
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DOI: https://doi.org/10.1007/s00497-005-0001-5