Drought Tolerance of Wild and Cultivated Species of Safflower and Assessment of Morphological Variation

پژوهشهای زراعی ایران

Article 12, Volume 12, Issue 4 - Serial Number 36, January 2015, Pages 738-750   

Document Type: Research Article

DOI: 10.22067/gsc.v12i4.24687

Authors

R Shiravand; M.M Majidi^*

Isfahan University of Technology

Abstract

Wild species of crop plants carry useful genes which can be used for breeding programs. This study was performed to investigate genetic variation of 46 genotypes from five Carthamus species and to evaluate their drought tolerance under field conditions (normal and deficit moisture environments) during 2011at Isfahan university of technology research farm. Results indicated that safflower species had different response to drought stress. Results showed that drought stress significantly reduced seed yield in C. tinctorius and C. palaestinus. The wild species of C. palaestinus had higher seed yield, its component and oil percent compared other species in both moisture conditions. Drought tolerance indice (STI) showed that C. palaestinus had the highest drought tolerance. Cluster analysis based on agro-morphological traits indicated that three species C. tinctorius, C palaestinu and C. oxyacanthus had the most similarity among studied species. Finally in respect to high hybridization of two main safflower relatives C. palaestinus (because high STI) and C. oxyacanthus (because high stability under drought condition) are suitable source for transferring drought tolerance genes to cultivated species.

Keywords

Oilseed; Wild relatives; Drought tolerance indice

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