The study of Galek (2000), who evaluated the stability of resistance to powdery mildew and leaf rust in spring rye, confirmed similarity of the two measures.
(2000) found fairly strong correlation between Wi and bi, if the resistance of spring rye to powdery mildew was evaluated, but for the other five evaluated traits this relationship was considerably weaker.
Completely different ranking of 20 spring rye lines in respect of stability of resistance was found when ranked by CV or bi.
FL-SYNT tetraploid
spring rye (Secale cereale L.) germplasm (Reg.
The economic benefits and costs of fallow cover crop systems were evaluated using fall and spring rye (Secale cereale L.) cover crops with minimum and zero tillage, and using sweet clover (Melilotus officinalis (L.) Lam.) established in companion crops of field peas (Pisum sativum L.), mustard (Brassica juncea (L.) Coss.), or flax (Linum usitatissimum L.) and terminated in the fallow year by four methods.
Fall and spring rye cover crops were evaluated for their application in cereal production systems, while sweet clover (Melilotus officinalis (L.) Lam.) as a cover crop was evaluated for three alternative companion oilseed and pulse crops and four methods of terminating the growth of the cover crop.
The first was fall and spring rye cover crops, rye being chosen because of the effect its residue has on suppressing weed germination.
Fall rye (FR) was seeded in September of 1992 and 1994, spring rye (SR) in May of 1993 and 1995 at 95 kg [ha.sup.-1] directly into the stubble of a previous spring wheat crop.
Centric translocations of chromosome 2R from
spring rye cultivar Blanco to chromosome 2B of wheat were produced in the wheat cultivar Chinese Spring by centric breakage-fusion (Lukaszewski, 1993; Brunell et al., 1999) and transferred to Pavon wheat by the backcross procedure.
Single spikes of each plant of the [F.sub.2] population from this cross were pollinated with `Gazelle'
spring rye, and the four crossability classes segregated as would be expected for a trait controlled by two genes.