STUDIES ON MENDELIAN FACTORS 
IN AQUILEGIA VULGARIS 
BY KARL B. KRISTOFFERSON 
LUND 
UDGING from the genetical literature Aquilegia has been the object 
of genetical investigations only to a small degree. MENDEL has 
made bastards in Aquilegia but, unfortunately, he has not left any 
report of his experiments. Baur (1910, 1919) has investigated the 
inheritance of some chlorophyll-variations, and he has also made 
species hybrids (which showed segregation in F2). As to the latter 
experiments I have not seen any detailed report. Nobody has in- 
vestigated the inheritance of the flower colour, so far as I know. 
It is rather curious that so little work has been done on Aquilegia 
as this species is very suitable for genetical experiments. When isolated 
with parchment bags it 4s perfectly autogamous, and each flower 
yields a large number of seeds. It has further all the advantages of 
a perennial; it is possible to grow the original parent plants and 
bastards for many years for comparison. To this must be added the 
advantages of the annual. Thus, when the seeds are sowed immediately 
after their harvesting the plants will flower the following summer. I 
TABLE 1. Segregation in Da. D;-plant BbRr. 
Flower colour Dark-blue | Red Light-blue White 
OH. ce NL Reh 22 | 9 7 2 | 
| RN Bane Rovere | 9 + AR | 3 + 0,946 3 + 0,946 | 1 + 0,587 
OB Sn ee 2, 0,0 
Deviation (D) +... Soa | on. Ps Sa ee 
De Fr En | ve Res 0,634 0,211 0,341 
