174 A Preliminarji Note on the Genetics o/Fragaria 



The plants I have of F^x P are not <ild enmigh to flower, but the 

 results should be interesting. This at least tends to discourage the 

 view that Alpines cannot be crossed with garden varieties, though, at 

 the same time, it does not prove that our perpetuals of to-day sprang 

 originally from the cross Alpine and garden variety. 



The first perpetual widely known was " Gloede's seedling," Ananas 

 Perpetual, no great success. Then came Mabille (Limoges) with I'ln- 

 epuisable, also no great success. Then came Roi Henri, St Joseph and 

 the perpetuals of to-day the work of Abbe Thivolet. 



In the endeavour to segregate the perpetual character I selfed, in 

 1911, St Antoine de Padoue. In 1911 I counted 93 Perpetuals (P) 

 and 35 non-Perpetuals {NP), 2 doubtfuls. In 1912 I tested these 130 

 plants again removing all flowers to prevent early fruiting and obtained 

 the result in September and October 



108 P 22 NP 



Expectation (3 to 1) 97 -.5 P S2-5 NP. 



In 1910 I selfed "Laxton's Perpetual." 



In May 1912 I removed all flowers fi'om the resulting plants and 

 obtained in October, 



69 P 11 A^P 2 doubtful 



Expectation (3 to 1) QVo P 20-5 NP. 



In 1910 I crossed the garden variety "Bedford Champion" (non- 

 perpetual) with " Laxton's Perpetual." 



In May 1912 I removed all flowers from the resulting plants and 

 obtained in October, 



24 P 53 NP. 



The simplest expectation would be equality, from which the de- 

 parture is considerable. Later results suggest that \'arious complications 

 have to be considered which, as yet, I cannot interpret. Subsequent 

 experiments have resulted as follows : — 



In 1911 "St Antoine de Padoue" was again .selfed, and gave in 

 October 1913— 



64 P 6 A^P 1 doubtful, also 16 dead plants. 



Perpetuals appear to resist drought better than non-perpetuals, 

 accordingly it is quite possible many dead plants were non-perpetual. 

 Another point, worth noting, is that this year (1913), after dry weather 

 during July, August and September, many garden varieties flowered in 

 October which would not have done so under normal conditions. 



