Mapping and evaluating interaction effects between genomic regions controlling important agronomic traits in rice (Oryza sativa L. )

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Rahim Soroush Hossein; NAZARIAN FIROUZABADI FARHAD; Hosseini Chaleshtori Maryam; ESMAEILI AHMAD; EBADI ALI AKBAR

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Journal: Cereal Research Year:2019 | Volume:8 | Issue:4 Page(s): 423-441

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Title

Mapping and evaluating interaction effects between genomic regions controlling important agronomic traits in rice (Oryza sativa L. )

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Keywords

EpistasisQ1

Grain yieldQ2

Linkage mapQ1

Recombinant inbred linesQ2

Abstract

To detect main and epistatic QTLs and their environmental interactions for rice important agronomic traits, 242 Recombinant inbred lines (RIL) from two F6 rice populations derived from crosses between Alikazemi / IR67017-180-2-1-2 (IRA population) and Ali Kakami / Saleh (SA) cultivars were evaluated in two locations. Results of the present experiment showed that the Linkage map of the two populations using 87 polymorph microsatellite markers (SSR) covered 1356. 0 cM of rice genome with an average distance of 15. 58 cM between two markers. A total of 20 main QTLs (M-QTLs) and 33 epistatic QTLs (E-QTLs) were identified with positive and negative effects. Five M-QTLs and five E-QTLs had a significant interaction with the environment. Eight M-QTLs and ten E-QTLs with significant effect on agronomic traits were stable and did not have any significant interaction with the environment. These QTLs include two M-QTLs and two E-QTLs for reducing plant height, three M-QTLs and three E-QTLs for decreasing heading date, an M-QTL and an E-QTL for increasing panicle length and two M-QTLs and four E-QTLs to increase Grain yield. These main QTLs explained 11. 12% (qHD6) and 24. 5% (qGY1) phenotypic variation, respectively. Therefore, such useful QTLs can be used for gene pyramiding programs to improve rice agronomical traits. Furthermore, six linked SSR markers (RM421, RM178, RM3441, RM5101, RM7551 and RM5302) were identified with less than 5 cM distance from important QTLs, suggesting that such SSR markers can be used in marker-assisted selection to select rice lines with desirable traits in segregation generations.

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APA: Copy

Rahim Soroush, Hossein, NAZARIAN FIROUZABADI, FARHAD, Hosseini Chaleshtori, Maryam, ESMAEILI, AHMAD, & EBADI, ALI AKBAR. (2019). Mapping and evaluating interaction effects between genomic regions controlling important agronomic traits in rice (Oryza sativa L. ). CEREAL RESEARCH, 8(4 ), 423-441. SID. https://sid.ir/paper/380178/en

Vancouver: Copy

Rahim Soroush Hossein, NAZARIAN FIROUZABADI FARHAD, Hosseini Chaleshtori Maryam, ESMAEILI AHMAD, EBADI ALI AKBAR. Mapping and evaluating interaction effects between genomic regions controlling important agronomic traits in rice (Oryza sativa L. ). CEREAL RESEARCH[Internet]. 2019;8(4 ):423-441. Available from: https://sid.ir/paper/380178/en

IEEE: Copy

Hossein Rahim Soroush, FARHAD NAZARIAN FIROUZABADI, Maryam Hosseini Chaleshtori, AHMAD ESMAEILI, and ALI AKBAR EBADI, “Mapping and evaluating interaction effects between genomic regions controlling important agronomic traits in rice (Oryza sativa L. ),” CEREAL RESEARCH, vol. 8, no. 4 , pp. 423–441, 2019, [Online]. Available: https://sid.ir/paper/380178/en

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