Premium
Wide hybridization and introgression breeding in safflower: Effectiveness of different selection methods
Author(s) -
Espanani Soheila,
Majidi Mohammad Mahdi,
Saeidi Ghodratollah,
Alaei Hossein,
Rezaei Vahid
Publication year - 2019
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12713
Subject(s) - carthamus , biology , introgression , selection (genetic algorithm) , interspecific competition , genetic diversity , drought tolerance , agronomy , population , microbiology and biotechnology , botany , genetics , gene , medicine , demography , artificial intelligence , sociology , computer science , traditional medicine
Possibility of using interspecific hybridization to increase genetic diversity of drought tolerance in safflower ( Carthamus tinctorius L.) and effectiveness of different selection methods is poorly understood. The main objectives of this study were to evaluate the effectiveness of (a) interspecific hybridization to expand genetic diversity in safflower for agronomic traits and drought tolerance in advance generations and (b) different selection methods (direct vs. indirect) for improving seed yield. Interspecific hybridizations were performed between species of C. tinctorius × C. palaestinus (TP), C. palaestinus × C. oxyacantha (PO) and C. tinctorius × C. oxyacantha (TO). Based on the field screening of genotypes in F3 generation, four groups of selected genotypes (derived from combination of direct and indirect selection under both drought and normal environments along with selection based on drought tolerance index (STI)) were evaluated in F4 and F5 generations. Indirect selection for seed yield was significantly more efficient than direct selection. Selection in stress environment resulted to more efficiency than selection in normal environment. No significant difference was observed between direct selection and selection based on STI. The result showed that TP was the best population to combine high seed yield and drought tolerance in safflower.