Abstract
Anatomical changes occurring during the microsporogenic development of P. salicina Lindl. were studied in male fertile and male sterile genotypes. Male fertile pollen grains showed three well determined pore regions, without ektexine. Intine was thick and surrounded the vegetative cell. Vegetative cells enclosed the generative cells; their cytoplasm was rich in plastids, abundant RER and active mitochondria. Development of sterile pollen was different from the meiosis step. Microspores did not show germination pores and ektexine was continuous around the whole grain. Pollen grains showed an atypical shape. The tapetum persisted after the tetrad stage and showed hypertrophy and vacuole development, resulting in abnormal microspore development. Only a few pollen grains and rudiments of collapsed microspores close to the anther wall were formed at anthesis.
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Acknowledgments
The authors thank Dr. Beatriz Galati for critical review of the manuscript, Samuele Falciani and Guiseppe Padula for collecting the experimental material, and Mrs. Isabel Farías for assistance with the histology. This research was supported by the Secretary of Science and Technique of Argentina (SECYT) (grants PICT 12239 and IT/PA03-BVIII/018) subsidized by Inter-American Development Bank (BID 1201/OC-AR).
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Radice, S., Ontivero, M., Giordani, E. et al. Anatomical differences on development of fertile and sterile pollen grains of Prunus salicina Lindl.. Plant Syst Evol 273, 63–69 (2008). https://doi.org/10.1007/s00606-008-0011-5
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DOI: https://doi.org/10.1007/s00606-008-0011-5