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Biodiversity of drought resistance and indirect selection in safflower (Carthamus tinctorius L.) genotypes – JBES

Leila Fahmideh, Hajir Beheshtizadeh, Ahmad Reza Golparvar, Saeed Salehi

Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Zabol, Zabol, Iran

Department of Plant Breeding, College of Agriculture, Isfahan(Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

Young Researchers and Elite Club, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran

Key words: Safflower, Biodiversity, Drought stress, Resistance indices, Biplot analysis.

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.

Get the original articles in Source: Volume 6, Number 6, June 2015 – JBES

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