94 



University of California Publications in Agricultural Sciences \ \'ol. 4 



Table 5. Cultures of 1908 (Continued) 



" Daggers (t) indicate the position and number of apparent mutants. Double 

 daggers ( + ) indicate inheritance of parental type (here, early); all single progeny 

 of WG9-C10 here reported have been tested for inheritance of this type. The 

 conventional statistical constants corresponding to the house totals of tables 5 

 and 6 have been published (Frost, 1911); the means for flowering given there 

 are too high by one half-day. 



" To time of observation (upper limit of one-day class). 



the difference in earliness between the early and Snowflake types. The 

 parents grouped under "rest" include CG2 and WG9 themselves, with 

 four progeny of the former and eight of the latter. Of these fourteen 

 parents, not one has produced exceptionally few-noded progeny like 

 those of WG9-C10. 



Apparently WG9-C10 was heterozygous for a "few-nodedness" 

 factor not carried by any of the other parents tested. Neither in 

 the 1907 cultures nor in the 1908 cultures now under consideration 

 did the data suggest that WG9 itself was similarly heterozygous. 

 Tables 5 and 6 include the first 30 progeny of WG9, for each house, 

 as arranged at the first transplanting, ** 88 plants altogether; including 

 the remaining plants, mainly weak or abnormal at transplanting, the 

 total is 116. One of the F, plants (WG9-syn3-]\I10) was very sug- 

 gestive of the early type, but (tables 12 and 13) it gave only Snow- 

 flake progeny in a small test. 



" See page 89. Two plants not producing a normal main inflorescence are 

 omitted. 



