A VEGETATIVE REVERSION IN PORTULACA 



{Abstract) 



A. F. BLAKESLEE AND B. T. AVERY, JR. 



Station for Experimental Evolution, Cold Spring Harbor, N. Y. 



A single dwarf individual was discovered in a bed of plants from 

 commercial seed of Portulaca grandi flora. When the dwarf is selfed 

 it throws all dwarfs. Some of the dwarf offspring produce reverting 

 branches which differ from the dwarf stock upon which they are 

 borne by having red, instead of green stems and by having longer 

 internodes. The flowers on both dwarf stock and reverting branches 

 are red. Selfed seed from the reverting branches produces both 

 dwarfs with short internodes and normal plants with long internodes 

 as well as occasional dwarfs that show reverting branches. 



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