34 REPORT OF THE CONFERENCE ON GENETICS. 
Lax Ears x Dense Ears. 
A series of hybrids between Club wheats and various lax-eared 
varieties. 
The hybrid is in each case intermediate between its parents in respect 
to the denseness of the ear. 
Where the ears are partially bearded such awns may be found in 
beardless parent. 
Club Wheat x New Era. 
The essential difference between the parents is that one has a dense 
and the other a lax ear. 
The F, plants are intermediate in this respect, and in the following 
generation dense, intermediate, and lax forms are produced in the pro- 
portion of 1: 2:1. 
Amongst these are individuals which are denser than the parent. 
Rough Chaff x Golden Drop. 
Rough chaff, white with a felted chaff. Golden drop, red with a 
smooth chaff. 
F,, chaff felted, colour red. Segregation in F, normal, giving nine 
rough red, three rough white, three smooth red, and one smooth white. 
Triticum polonicum x T. turgidum. 
The F, has a rough chaff with a shade of grey colour. The glumes 
are intermediate in size between the parents, and the time of ripening is 
again intermediate. The ears are about as lax as those of 7’. polonicum. 
F, forms with long, intermediate, and short glumes in the proportion 
of 1: 2:1. Time of ripening same ratio. Rough chaff 3: 1, but con- 
fined to the intermediate and short-glumed individuals. All plants of the 
F, are white in colour. 
Club Wheat x ‘ Tasmanian.’ 
Club wheat, bearded, dense and smooth chaffed; Tasmanian lax, 
beardless, and rough-chaffed. 
F’,, intermediate in denseness, rough-chaffed, and beardless. 
F,, three rough to one smooth; beardless to bearded in the same 
proportion ; dense, intermediate to lax as 1:2: 1. 
dense 
intermediate } rough or smooth, beardless or bearded. 
lax 
T. turgidum x T. Spelta dicoccwm, 
T. turgidum, chaff rough, grey, rachis tough ; plants six feet high. 
T’. dicoccwm, chaff smooth, white, rachis brittle, and spikelets closed ; 
plants less than three feet high. 
F,, similar to 7. twrgidwm except that the rachis is more brittle and 
the spikelets closed. 
The F, generation has ‘still to be examined statistically. The speci- 
mens shown represent the types occurring. 
