Natalia GEORGIEVA1*, Valentin KOSEV2
1Department of Technology and Ecology of Forage Crops, Institute of Forage Crops, Pleven, Bulgaria
2Department of biochemistry, Institute of Forage Crops, Pleven, Bulgaria
Corresponding author: firstname.lastname@example.org, Phone: +35964805882
Abstract. Need to create cultivars combining high potential productivity and resistance to stressful environmental factors appears a new priority in the plant breeding. The present study aimed to estimate adaptability and stability of eleven white lupin cultivars regarding seed productivity and main yield components. The experiment was conducted during 2014–2016 at the Institute of Forage Crops (Pleven), by using randomized block design. The obtained results showed a significant genotype–environment interaction for all studied traits (with exception of pod length and pod width). The calculated parameters determined environmental stability in regard to the main traits in genotypes as it follows: for the plant height–Amiga and Kijewskij Mutant, for number of pods per plant–Nahrquell and Amiga, for seeds per plant–Ascar and Amiga, for the first pod height–Kijewskij Mutant and BGR 6305, for seed weight per plant–BGR 6305 and Garant, for 1000 seed weight–Shienfield Gard and Garant. Cultivar Hetman was stable, but had low values of the studied traits and exhibited low adaptive ability (bi<1). Based on the conducted study, cultivars BGR 6305, Amiga and Garant could be used as source material in lupin breeding program for development and selection of stable and high–productive lines.
Keyword: adaptability, cultivars, environment, stability, white lupin.