Effect of Seeding Rates and Genetic Compositions on some Growth and Yield Traits of European Rye (Secale cereale L.)

The experiment was carried out at Agricultural Experiment Station 2, Agriculture College, Muthanna University, in Al-Bander area during the agricultural season 2022-2023, to study the effect of four seeding rates (80 s1, 100 s2, 120s3, 140 s4) kg ha -1 on some yield and quality traits of three newly introduced genetic compositions of Rye (Krzuca v1, Daukowskie zlote v2, Horyzo v3). The experiment was conducted using a completely randomized block design according to the split-plot design with three replications. The seeding rates occupied the main plots and the genetic compositions in the subplots. The results of the experiment showed that the genetic compositions had a significant effect on some of the studied traits. The Daukowskie zlote genetic composition had the highest values of spikes number (257.19 spikes m -2 ), and grain number per spike (56.77 grains spike- 1 ). The seeding or number of seed rates also had a significant effect. The 100 kg ha -1 level had the highest spike number (280.56 spikes m -2 ), and grain yield (2.397 t ha -1 ). The interaction between factors had a significant effect. The combination (V2×S3) had the highest values for number of spikes (337.1 spikes m -2 ), number of grains per spike (62.30 grains spike -1 ), and grain protein content (16.33%).