The reproductive biology of the liverwort Blasia pusilla L.

摘要: AbstractFollowing sex organ production and fertilization in the late spring, sporophytes of Blasia develop during summer months. By early autumn cell division seta is complete cells are packed with amylochloroplasts, whilst capsule contains monoplastidic sporocytes at meiotic prophase abundant protein bodies. The parent gametophytes die immature overwinter dead tissues. spores mature following spring elongation associated depletion its starch reserves. A survey a range hepatics reveals that premature death entire sporophyte-bearing appears to be unique although young Calypogeia Goebelobryum marsupia autumn. Daylength probably controls initiation formation autumnal dormancy whereas sporophyte maturation process almost certainly triggered by higher temperatures. Physiol...