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Annals of Botany 20: 544-552, 1956
© 1956 Annals of Botany Company

RESEARCH-ARTICLE

Colchicine Effect on the Prothalli of Goniopteris multi-lineata (Wall.) Bedd. and G. prolifera (Roxb.) with Emphasis on Abnormal Spermatogenesis in Polyploid Prothalli

P. N. MEHRA and D. S. LOYAL

Botany Department, Panjab University Amritsar (India)

Cytological investigation into abnormal sperm formation in polyploid prothalli reported earlier has been undertaken. It is established that the B-type sperms are diploid and giant C type derive from tetraploids. The spermatogenesis in tetraploid prothalli is modified by frequent amitosis and fragmentation of the mother cell nucleus resulting in twins, triplets, and monsters with double or triple heads or tails; obviously the nuclear constitution of these sperms is variable.


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