Study on grain yield, biomass and wet forage yield of some promising lines of Vicia narbonces in warm dry land condition at Kohgiloyeh and Boyerahmad

Present work was conducted to study on the adaptability and yield stability of V. narbonences promising lines at warm-dryland areas. This study was performed with 5 V. Narbonences genotypes in RCBD (4 replication) for three growing season (2001-2002 to 2003-2004) in 3 warm drayland areas at Kohgiluyeh va Boyerahmad province namely Basht، Dehdasht and Lishter. Seeds were planted in six rows (4m length of the rows) corresponding to each of the 5 genotypes and a border of 25 cm width. Combined analysis of variance for three years and locations for wet forage and biomass yield were implemented. Result showed that error variance for all of experiments was not significant at 5% and 1% probability levels. For the study of stability and adaptability yield of lines were used from Lin and Binns method (intra location variance)، Regression indexes، Deviation from regression، Coefficient of location variation، Determination index (R2) and Non-parametric methods such as Rank and Standard deviation of rank (SDR). Results of combined analysis of 3 years and 3 locations showed that year and location effects for wet forage، biomass and seed yield were not significant at 5% and 1% probability levels. Year×location intraction for forage، biomass and seed yield were significant at 5%، 1% and 1% probability levels respectively. Line effect for biomass and forage yield no significant but for seed yield significant at 5% probability levels and line×year intraction effects for wet forage، biomass and seed yield were significant at 5%، 1% and 5% probability levels respectively. Line×location intraction for above characters at 1% probability level was significant and finally line×year×location intraction for all of traits were not significant. With regarding of forage and biomass yield، other agronomic characteristics and stability parameters lines No. 4، 5 the highest yield and good stability parameters recognized as stable and adaptable lines in rest of genotypes. Finally we can recommend these lines for the warm areas of Iran.