2. The inheritance of the length of the ear and the length of the husks.

In some hybrid corn, as well as in some local varieties, the top of the ear from milk stage of the kernels and until maturity is not covered with husk, therefore, this part of the ear is often very badly damaged by birds. An attempt was made to find the hereditary connection between the length of the ear and the length of the husks. In our inbred stock two genotypes with longer husks than the ear and one with shorter husks than the ear were observed. For genetical studies the following crosses and backcrosses were made:

Generation	Cross					Remarks
P1	longer x shorter	longer x shorter	normal x shorter	normal x shorter	normal x normal
F1	normal husks	normal husks	normal husks	normal husks	shorter husks	heterotic ears
F1 outcrossed	F1 x shorter	F1 x longer	F1 x shorter	F1 x normal	F1 x normal
Progeny:
husks longer %	0	38.8	0	0	17.5
� normal %	58.3	61.2	32.6	100.0	82.5
� shorter %	41.7	0	67.4	0	0
Total	100.0	100.0	100.0	100.0	100.0

From the abave data it follows that the length of the ear and the length of the husks are due to different genetical factors which are probably only partly linked. Further studies are in progress.

A. Tavcar