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Genotypic Selection for Stability and Yield Adaptability of Short-Duration Pigeon Pea in Mozambique using REML/BLUP Mixed Models

DOI : https://doi.org/10.36349/easjals.2021.v04i10.002
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The objective of the research was to select short-duration pigeon pea genotypes with high yield, stability and broad genotypic adaptability for northern region of Mozambique using REML/BLUP mixed model. Twelve short-duration genotypes were evaluated in twelve environments from combinations of locations and years: Nampula (2016, 2017 and 2018), Ribáuè (2016), Mogovolas (2016, 2017 and 2018), Namapa (2016, 2017 and 2018) and Montepuéz (2017 and 2018), in a randomized block design with three replications. The genetic parameters were estimated by the mixed model of restricted maximum likelihood (REML) and best linear unbiased prediction (BLUP). The significance of the deviance analysis effects was tested by the likelihood ratio test, considering the χ2 distribution. The selection genotypic strategies were based on the predicted genetic values free of interaction (µ + g), with local interaction (µ + g + ge), mean of environments (µ + g + gem), and harmonic mean of relative performance (MHPRVG). Different genotypic responses were observed for genotypes x locations and genotypes x locations x years interactions. The REML/BLUP mixed model allowed the selection of the short-duration pigeon pea genotypes ICEAP 01107/5, ICEAP 01107/8 and ICEAP 01284, simultaneously for yield, stability and broad genotypic adaptability for northern region of Mozambique.

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Dr. Afroza Begum

Lecturer, Dept. of Pharmacology and Therapeutics, Shaheed Monsur Ali Medical College & Hospital, Uttara, Dhaka-1230, Bangladesh

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