Study of Regeneration and Some Germination Characters of Feral Rye Seed (Secale cereale) Obtained From Interference With Wheat Cultivars

Investigation of weed seed production and its characteristics in competition with crop is important in prediction and long-term management of weeds. Thus، in this study were conducted two field and laboratory experiments. Factors of field experiment were included of four wheat cultivars (Sayson، Alvand، Chamran and Sepahan) and feral rye densities at four levels (20، 40، 60 and 80 plants m-2) and was carried out based on a randomized complete block design with three replications. In laboratory project for study of related traits to weed germination، 25 feral rye seed from each of interference plots of field experiment was harvested and was considered as an experimental unit. In the farm were measured seed yield، number of fertile spike، number of seed per spike، number of seed per unit area and 1000-grain weight of feral rye. In the laboratory condition، cumulative germination percentage، mean germination time، plumule length، radicle length، plumule and radicle dry weight of feral rye were studied. Results showed that inhabitation effects of Alvand and Sepahan cultivars on number of fertile spike، seed yield and seed number of feral rye were more than Chamran and Sayson cv. Also، feral rye seeds obtained of interference with Alvand and Sepahan cv. had lower percentage and rate of cumulative germination than other two cultivars. Generally، length and dry weight of radicle، length and dry weight of plumule in weed seeds from interference with Alvand and Sepahan، were lowest value، significantly. Sepahan cv in compared to other wheat cultivars، had highest negative effects on feral rye from the viewpoint of seed number with ability of germination. Also، it caused to severe reduction of most of weed seedling growth characteristics. Thus، aforesaid cultivar was appropriate for control of field pollution، in both the short and long time.