Abstract
Allium sativum , clone Piemonte possesses bulbilliferous inflorescences of a few early degenerating flowers. In the clone, the pollen formation has been found impaired by sudden and fast abortion of the free, still uninucleate spores. At this time, they exhibited a fully developed sexine, a monolayered 150- to 200-nm thick nexine, and an intine averaging 30 nm in thickness. Their profile was like that of an orange segment with one side incised by a deep furrow. The locule showed an abundant polysaccharide content. The tapetum was a monolayered tissue of uninucleate cells which became very rich in cytoplasm and organelles, starting from the tetrad period. At spore abortion, they were endowed with cytoplasmic bodies mostly composed of lipids. Starch was never detected in any anther cells.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
