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Gomez-Becerra, H.F.

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Gomez-Becerra
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H.F.
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Gomez-Becerra, H.F.

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    Association analysis of resistance to cereal cyst nematodes (Heterodera avenae) and root lesion nematodes (Pratylenchus neglectus and P. thornei) in CIMMYT advanced spring wheat lines for semi-arid conditions
    (Japanese Society of Breeding, 2016) Dababat, A.A.; Gomez-Becerra, H.F.; Erginbas Orakci, G.; Dreisigacker, S.; Imren, M.; Toktay, H.; Elekcioglu, I.H.; Tesfamariam Mekete; Nicol, J.M.; Ansari, O.; Ogbonnaya, F.C.
    To identify loci linked to nematode resistance genes, a total of 126 of CIMMYT advanced spring wheat lines adapted to semi-arid conditions were screened for resistance to Heterodera avenae, Pratylenchus neglectus, and P. thornei, of which 107 lines were genotyped with 1,310 DArT. Association of DArT markers with nematode response was analyzed using the general linear model. Results showed that 11 markers were associated with resistance to H. avenae (pathotype Ha21), 25 markers with resistance to P. neglectus, and 9 significant markers were identified to be linked with resistance to P. thornei. In this work we confirmed that chromosome 4A (~90–105 cM) can be a source of resistance to P. thornei as has been recently reported. Other significant markers were also identified on chromosomal regions where no resistant genes have been reported for both nematodes species. These novel QTL were mapped to chromosomes 5A, 6A, and 7A for H. avenae; on chromosomes 1A, 1B, 3A, 3B, 6B, 7AS, and 7D for P. neglectus; and on chromosomes 1D, 2A, and 5B for P. thornei and represent potentially new loci linked to resistance that may be useful for selecting parents and deploying resistance into elite germplasm adapted to regions where nematodes are causing problem.
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    Evaluation of grain yield stability, reliability and cultivar recommendations in spring wheat (Triticum aestivum L.) from Kazakhstan and Siberia
    (Journal of Central European Agriculture, 2006) Gomez-Becerra, H.F.; Morgounov, A.; Abugaliyeva, A.I.
    The investigation was carried out to determine the stability and adaptability patterns of a set of 40 promising spring wheat genotypes from Kazakhstan and Siberia evaluated in a multievironment yield trial across 22 environments. Some of the most widely known parametric stability parameters were used as well as the less frequently cited reliability index (I). Grain yield correlated significantly and positively with the stability parameters b and S2 and the reliability index (I); but did not correlate with AMMI ASV. However, the stability parameters failed in detecting adaptability patterns. In contrast, the reliability index (I) was probed to be more useful in supporting practical decisions. With regard to the genotypes, cultivars Lutescens 54, Lutescens 30-94, Lutescens 29-94, Tertsia, Omskaya 35, and Shortandynskaya 95 showed to be the widest adapted and the most reliable cultivars.
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    Genotype x environment interaction, breeding strategies and genetic gains for yield and grain protein content in the Kazakhstan-Siberia network on spring wheat improvement
    (Ministry of Culture, Information and Sport of the Republic of Kazakhstan, 2006) Gomez-Becerra, H.F.; Morgounov, A.; Abugaliyeva, A.I.
    50 генотипов пшеницы из Казахстана и Сибири по сети улучшения яровой пшеницы КАСИБ, выращенные в 200З-2004 гг. в 14 географических пунктах Казахстана и Сибири России, были оценены с точки зрения взаимодействия генотипа и среды по урожайности и содержанию
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