VII.3 Multiple dominant and recessive marker stock development.
R.I. Wolfe & K.W. Campbell. Research Station, Agriculture Canada, Box 610, Brandon, Manitoba, Canada, R7A 5Z7.
For several years now we have been developing a set of multiple dominant and recessive marker stocks at Brandon. In 1974 we obtained for the first time a multiple dominant line homozygous for the following genes and characteristics: N, V, Bt 1, Bt 2, B, 0, S, R, Rb, blue aleurone, Log or similar gene for medium to fairly long glume awns, dominant or semi-dominant small hood and short awn, spring habit, thick matted hairs on the rachis edges, and I or similar gene(s) for very small lateral seeds.
We have several multiple recessive lines carrying recessive counterparts for the genes listed above, and also carrying various combinations of other recessive genes such as wx, trd, e, li and parkland spot. In addition we have been trying to put together a male sterile gene, a dwarf and a gl or cer- mutant for each chromosome in a multiple recessive background.
It is anticipated that such multiple marker stocks will be of use in several areas of barley research. We invite correspondence in this regard and for the exchange of seed.