THE RESULTS OF EVALUATING THE COLLECTION ACCESSIONS OF <i>DACTYLIS GLOMERATA L.</i> UNDER THE CONDITIONS OF THE PRIMORSKIY KRAI
The results of three-year long study of the collection accessions of Dactylis glomerata L. under the conditions of the Primorskiy Krai (Region) are discussed. The study was conducted over the 2011 to 2014 period on the fields of plant breeding crop rotation of the Primorskiy Research Institute of Agriculture. The soil of the plot was meadow-brown (bleached); heavy loam in terms of the particle-size composition. The arable horizon made 18-20 cm. The research goal was to study the promising source material of Dactylis glomerata L. for further development of new productive varieties. The collection included 49 accessions obtained from the VIR (Vavilov Institute of Plant Industry) Seed Bank, other research institutions and local populations and varieties; the accessions belonged to the following four ecologic-geographic groups: European, Siberian, Far-Eastern and American. The accessions were evaluated for winter hardiness, herbage and hay yields, seed production, chemical composition and nutritional value. The promising source material for further selective breeding was identified. The following accessions were identified based on their valuable breeding and economic characters: k-35346 Severodvinskaya 66 (Arkhangelskaya Oblast), Torpeda (Penza Research Institute of Agriculture), k-39145 Penora (Penza Agricultural Experimental Station), k-48113 Aukshtuole (Lithuanian Research Institute of Agriculture), Bylina (Tomskaya Oblast), k-49738 Dikorastushchaya (Kemerovskaya Oblast), Dikorastushchaya (Primorskiy Krai), and k-39727 Norrsterh (Canada). The accessions k-36090 Magutnaya (Belorussian Research Institute of Agriculture), k-36684 Dvina (Arkhangelskaya Oblast), Sverdlovskaya 79 (Ural Research Institute of Agriculture) are of interest for developing the varieties with high herbage and hay yields. It is reasonable to use the accession k-41394 Annenkovskaya 18 (Ural Research Institute of Agriculture) in the breeding for increased protein and carotene content, while the accessions k-32028 Dikorastushchaya (Arkhangelskaya Oblast), k-43645 Dikorastushchaya (Vologodskaya Oblast), and k-39077 Dikorastushchaya (Kemerovskaya Oblast) for increased seed production.