MULTI-TRAIT MAPPING OF QTLS FOR DROUGHT TOLERANCE INDICES IN RICE

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RAHIMI MEHDI; DEHGHANI HAMID; RABIEI BABAK; TARANG ALIREEZA

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Journal: Cereal Research Year:2012 | Volume:2 | Issue:2 Page(s): 107-121

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Title

MULTI-TRAIT MAPPING OF QTLS FOR DROUGHT TOLERANCE INDICES IN RICE

Author(s)

RAHIMI MEHDI | DEHGHANI HAMID | RABIEI BABAK | TARANG ALIREEZA | Issue Writer Certificate

Keywords

DROUGHT TOLERANCE INDICESQ2

MULTI-TRAIT ANALYSISQ2

QTLQ2

RICEQ2

Abstract

Rice improvement for drought tolerance requires reliable assessment of diversity and genetic analysis of drought tolerance related indices in breeding populations. In this study, 150 F5 families derived from a cross between Sepidroud (Indica) and Gharib (Indica) varieties were evaluated to multi-trait mapping of genomic regions controlling DROUGHT TOLERANCE INDICES in normal and drought stress conditions. Results of biplot analysis showed that stress tolerance index (STI), mean productivity (MP), geometric mean productivity (GMP) and harmonic mean (HM) are suitable indices to select the high-yielding genotypes in applied RICE breeding programs. QTLs mapping for each index using composite interval mapping identified three, three, two and three QTLs for HM, MP, GMP and STI, respectively, but the joint-analysis data for investigate the genetic relationships between these indices using the multi-trait mapping showed that there are significant genetic relationships between studied indices, so none of these identified QTLs didn’t independently control an index and jointly controlled multiple indices. Results from current study showed that the multi-trait joint analysis not only identified additional QTLs, but also revealed the genetic relationship between different highly correlated traits at the molecular level.

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APA: Copy

RAHIMI, MEHDI, DEHGHANI, HAMID, RABIEI, BABAK, & TARANG, ALIREEZA. (2012). MULTI-TRAIT MAPPING OF QTLS FOR DROUGHT TOLERANCE INDICES IN RICE. CEREAL RESEARCH, 2(2), 107-121. SID. https://sid.ir/paper/246676/en

Vancouver: Copy

RAHIMI MEHDI, DEHGHANI HAMID, RABIEI BABAK, TARANG ALIREEZA. MULTI-TRAIT MAPPING OF QTLS FOR DROUGHT TOLERANCE INDICES IN RICE. CEREAL RESEARCH[Internet]. 2012;2(2):107-121. Available from: https://sid.ir/paper/246676/en

IEEE: Copy

MEHDI RAHIMI, HAMID DEHGHANI, BABAK RABIEI, and ALIREEZA TARANG, “MULTI-TRAIT MAPPING OF QTLS FOR DROUGHT TOLERANCE INDICES IN RICE,” CEREAL RESEARCH, vol. 2, no. 2, pp. 107–121, 2012, [Online]. Available: https://sid.ir/paper/246676/en

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