Evaluation of seed and oil yield stability in NS rapeseed cultivars (Brassica napus L)

Abstract

Rapeseed trials performed in the period 2007-2010 were analyzed to evaluate seed and oil yield stability in NS rapeseed cultivars in changeable environmental conditions of northern Serbia. Seed yield, oil content and yield for 40 winter and 9 spring rapeseed cultivars were analyzed. It was found that the influence of year on seed and oil yield was most significant. Genotype (cultivars) by environment (year) interaction was further analyzed using AMMI (Additive Main Effects and Multiplicative Interaction) model. In the environmental conditions present during the trial in Rimski Šančevi according to the analysis of regression coefficient (bi) and ecovalence (Wi) and AMMI model, winter cultivars Nena and NS-L-102 were the most stable and high seed yielding, and hybrid cultivar NS-H-R-3 was singled out for oil yield. These cultivars are recommended for implementation in future breeding programs and for growing in the conditions described in this paper.

U cilju ocene stabilnosti prinosa semena i ulja NS sorti uljane repice u promenljivim klimatskim uslovima severnog dela Srbije, urađena je analiza ogleda izvedenih u periodu 2007-2010. Analiziran je prinos semena, sadržaj i prinos ulja 40 sorti ozime i 9 sorti jare repice. Utvrđeno je da su godine imale najznačajniji uticaj na prinos semena i ulja. Interakcija genotip (sorta) × spoljašnja sredina (godina) dalje je analizirana primenom AMMI (aditivni glavni efekti i višestruka interakcija) modela. U uslovima koji su vladali u godinama ispitivanja na lokalitetu Rimski Šančevi, prema analizi regresionog koeficijenta (bi) i ekovalence (Wi) i AMMI modela, za prinos semena kao najstabilnije i visokoprinosne su se izdvojile ozime sorte Nena i NS-L-102, a za prinos ulja i hibridna sorta NS-H-R-3. Ove sorte se preporučuju za uključivanje u dalje oplemenjivačke programe i za proizvodnju u uslovima navedenim u radu.