298 On Forinfi of the Hop resistant to Mildew 



Ref. no. of Number of 

 secdlintr clone-plants 



V91 1 



V92 1 



V93 1 



Z2 2 



Z 14 2 



Z 17 1 



Z 22 2 



Z25 3 



Z31 1 



242 2 ^ 



All the above seedlings have been growing for several years in the 

 Experimental Hop-garden at Wye College, and Table I shows the 

 behaviour of each seedling, and also of four other seedlings of the same 

 origin, towards the mildew (1) when the hop-plant is growing in the 

 hop-garden, and (2) when a cutting is taken and grown in a pot in the 

 greenhouse. 



Table I. 

 1917 1918 1919 



In In In In In In 



Sex greenhouse hop-garden greenhouse hop-garden greenhouse hop-garden 



SI 

 

 

 SI 

 

 

 * 



S2 s* 



SI 



s* 







S'' S* and S» S^ 



S^ 









 



— — 



SI 

 SI 

 SI S^ SI 







* 



The figures 1 tn 3 indicate the amount of mildew present; I =mere trace of mildew, 

 2- fail' amount of mildew, 3=plaiit very miklewed. * signifies that no suitable material 

 was a\ailal)le at the time when the observations were made (see below, p. 304). 



