Biodiversity of drought resistance and indirect selection in safflower (Carthamus tinctorius L.) genotypes
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2015, Vol 6, Issue 6
Abstract
Determination of the biodiversity, drought resistance indices and identify the resistant genotypes, were achieved using ten spring safflower cultivars. The cultivars were sown at drought and non-drought stress conditions in the layout randomized completely block design with three replications during 2013-2014 farming season. Assessment of simple correlation coefficients among drought resistance indices and seed yield of cultivars showed that geometric mean of productivity (GMP) and stress tolerance index (STI) enable to identify cultivars having a high potential yield and tolerance to drought stress and because of that were recognized as the best resistance indices. Biplot graphical display designed that Sterling, Nebrasks10, land race Kuseh and Gila is the most drought resistance cultivars and U.S.10 is the most drought susceptible. Classification of cultivars using biplot analysis revealed that crosses between Sterling, Nebraska10, Landrace Kuseh and Gila with S149 cultivars having maximum genetic distance are qualified to recommendation for genetic improvement of yield potential and drought resistance via selection in spring safflower cultivars.
Authors and Affiliations
Leila Fahmideh, Hajir Beheshtizadeh, Ahmad Reza Golparvar, Saeed Salehi
Keywords
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