[An analysis of cedar of Lebanon (Cedrus libani A. Rich.) pollen grain development in cultural plantings]. / Analiz razvitiia pyl'tsevogo zerna kedra livanskogo (Cedrus libani A. Rich.) v kul'turnykh nasazhdeniiakh

A cytological study of the Cedrus libani mature pollen from 3 culture areas (Italy, France, USSR) has shown that 69-71% of pollen grains have two-celled protallium and antheridial cell. About 5% of pollen grains are characterized by accelerated of delayed development, otherwise apparently normal. The pollen sterility (up to 30% of grains) is due to the abortive spore development. Anomalous cenocyte and multinuclear pollen grains were found thus suggesting that multicellular haploid structures capable of further growth and development may arise in the course of natural anther development.