Cellular Growth 119 



TABLE 4.4 

 Action of Colchicine on Algae and Gametophytes of Mosses, 

 Liverworts, and Ferns 



Species Results Reference 



Aulacomnium androf;rnum morphological changes 4-64 



Cladophora spp cross wall thickened 4-53 



Closteriurn spp temporary inhibition 4-80 



Dryopteris fdix-mas morphological changes 4-117 



D. subpubescens abnormal sperms 4-94 



Gonium spp temporary inhibition 4-80 



Goniopteris prolifera abnormal sperms 4-94 



Hormidium spp leukophytic isolate 4-1 25 



Hydrodictyon spp cellular changes 4-53 



Marchantia poh.morpha diploid gametophytes 4-9 



Micrasterias thomasianas no c-mitosis 4-67 



Nitella mucronata ci.4— oo 



Nosloc commune ci.4-o8 



Oedogonium spp polyploids 4-140 



Oedogonium cellular wall changes 4-53 



Pallavacima morphological changes 4-157 



Polystoma temporary inhibition 4-80 



Spirogyra spp plastid changes 4-1 58 



Ulia spp temporary inhibition . 



.4-80 



it less certain than previously believed possible for chromosomal num- 

 bers to be increased as cell form changed. 



Fern prothalli and sporogenous tissues were tested for the induc- 

 tion of polyploidy following colchicine."' Evidences of changes in 

 numbers were obtained for several species of ferns. In another applica- 

 tion of colchicine to growing prothallia regularly producing sper- 

 matozoids. some luuisually large sperms were obtained. Also some 

 changes in the shajx' of cells were noticed along with the increases 

 in size. Dilute solutions were used for early stages of germination of 

 the jMothalli. 



