204 THE INHERITANCE OF CHARACTERS IN RICE, IE 
ripening gold, yellowish rice. ¥F, was dark furrows, red rice and two Fs families 
gave the following results :— 
| 
| Furrows types Gold types 
| Red Slightly reddish Gold Yellowish 
Nos. 2573 & 2569 | 1,214 391 401 146 
OEE ea al 1,210 : 403 : 403 : 134 
From natural crosses giving similar results to the above several families, 
raised from red-riced Fy, plants, have given a simple 3 ; / ratio of dark furrows 
red rice: gold glumes, gold rice. 
Golden rice and undeveloped grain. 
In all families im which golden rice has occurred the grain of this type has 
been very poorly developed. Setting appears to be normal but the rice grain 
is never properly filled out and frequently shrivels some time before it is fully 
grown. Other types of rice occurring in the same family are always quite 
normally developed. In Plate I] are given photographs of a few typical 
grains of gold and red rice, from No. 2573 F,, showing the poor development 
of the gold rice as compared with the red. 
Grain weighments have been made in this family and the gold rice falls 
considerably below other groups. Weighments were made ot the unhusked 
paddy grain as this was required for seed purposes later. The tamily was 
splitting for the factor G@ and this introduced a complication owing to 
the connection between this factor and grain shape and weight that has 
already been noticed. For this reason average weights are given for each 
of the twelve groups appearing. For each group 40 plants, 100 grains each, 
were weighed, except where otherwise noted. The weights in grammes 
of 100 grains were as follows :— 
Purrows types | Gold types 
WET ia it areas 
Red | Sl. reddish | Gold | Yellowish 
RI ip Ri ri 
Coarse, GG a 2-250 2:219 1-695 | 2°193 * 
Medium, @ q od 2-182 2:142 1°721 ZVI 
Find) 9 B * 1-974 1-917 1556 | 1-868 + 
Average ae 2-135 2-093 1657 | 2:058 
* 6 plants only. + 13 plants only. 
