Early tapetal degeneration and meiotic defects are involved in the male sterility of Solanum commersonii (+) S. tuberosum somatic hybrids

Somatic hybridization between Solanum commersonii and S. tuberosum resulted in the production of male-sterile hybrid plants, except for one fully male-fertile hybrid. The male-sterile hybrids exhibited a "pollen-less" phenotype, with rare pollen grains which were abnormal in shape and exin...

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