Selection of durum wheat genotypes based on MGIDI and SIIG selection indexes

Document Type : Original Article

Authors

1 Assistant professor, Department of Agricultural and Horticultural Research, Lorestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Khorramabad, Iran

2 Assistant professor, Kohgiluyeh and Boyerahmad Agricultural and Natural Resources Research and Education Center, Agricultural Resaerch, Education and Extension Organization (AREEO), Gachsaran, Iran

3 Researcher, , Agricultural Engineering Research Group, Lorestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Khorramabad, Iran

10.22034/plant.2024.141754.1118

Abstract

The aim of this study was to select promising wheat lines based on yield and other agronomic traits using selection index of SIIG and MGIDI. For this goal, 14 promising line selected from the wheat breeding program of the rainfed agriculture research institute and sent from the ICARDA international research center along two checks were evaluated in a RCBD with three replications at the Sarab-Chengai research station during 2019-2022 cropping season. The results of variance analysis showed that there was a significant difference among durum wheat genotypes in terms of all measured traits. Genotypes of G4, G11, G2, G1, G3 and G14 had the highest grain yield with an average yield 3143, 3054, 3043, 2984 and 2974 kg/ha, respectively. The highest correlation was showed between grain yield with number of grain/m2 and grain filling rate. Based on the MGIDI index, lines G5 and G14 were selected as desirable lines. The results of the SIIG index indicated that G14, G4, G1 and G2 genotypes with the high value of SIIG (0.61, 0.60, 0.59 and 0.50, respectively) were superior genotypes. Generally based on the results of this research, the line G14 with the lowest MGIDI value and higher yield than average yield of unselected genotypes was selected as the ideotype using the MGIDI index. Based on SIIG index, lines G14 and G4, and Saverz and Dehdasht control cultivars were the best genotypes. In this way, line G4 and G14 are suggested for future breeding program.

Keywords

References

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Plant Production and Genetics
Volume 5, Issue 2 - Serial Number 8
November 2024
Pages 299-312

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