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Title: Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies
Authors: Suassuna, Taís de Moraes Falleiro
Suassuna, Nelson Dias
Moretzsohn, Márcio de Carvalho
Bertioli, Soraya Cristina de Macedo Leal
Bertioli, David Jonh
Medeiros, Everaldo Paulo de
Assunto:: Reprodução
Produtividade
Amendoim - genes
Issue Date: Jul-2015
Publisher: Crop Breeding and Applied Biotechnology
Citation: SUASSUNA, Taís de Moraes Falleiro et al. Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies. Crop Breeding and Applied Biotechnology, Viçosa, v. 15, n. 3, p. 175-180, jul./set. 2015. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332015000300175&lng=en&nrm=iso>. Acesso em: 21 mar. 2018. doi: http://dx.doi.org/10.1590/1984-70332015v15n3n30.
Abstract: Uma das principais demandas na cultura do amendoim é o desenvolvimento de cultivares tipo runner resistentes às cercosporioses. Na safra 2009/10, 12 progênies de pré-melhoramento (LPMs) foram selecionadas em população interespecífica RC1 F3, composta de 380 plantas, para resistência às cercosporioses e características agronômicas. Em 2010/11, as 12 LPMs foram avaliadas quanto à resistência às cercosporioses. O parental recorrente (controle suscetível) e todas as LPMs foram suscetíveis; plantas segregantes parcialmente resistentes foram selecionadas. Produtividade, vagens e sementes foram semelhantes à testemunha. Em 2011/12 as 12 LPMs e, em 2012/13, cinco LPMs selecionadas foram avaliadas quanto à produtividade e qualidade de grãos, com controle de doenças. Produtividade e peso de 100 grãos diferiram; rendimento, teor de óleo e a razão ácido oléico/linoléico foram semelhantes à testemunha. A variabilidade para resistência parcial às cercosporioses e características agronômicas, detectada após um ciclo de retrocruzamento, será útil para o Programa de Melhoramento de Amendoim.
Abstract: Development of leaf spots resistant runner peanut cultivars is one of the major demands in Brazil. In the 2009/10 crop season, 12 pre-breeding progenies (LPM) were selected out of 380 plants of an interspecific BC1F3 population for leaf spots resistance and agronomic traits. In the 2010/11, the 12 LPMs were evaluated for leaf spots resistance, without fungicide sprays. The recurrent parent (susceptible control) and all LPMs were susceptible; partial resistant segregating plants were selected. Some progenies had yield, pod and seed shape similar to the control. The 12, and the 5 LPMs selected in the 2011/12 and 2012/13 crop seasons, respectively, were evaluated under appropriate disease management. Differences were detected for pod yield and weight of 100 seeds. Seed/pod weight ratio, oil content and oleic/linoleic ratio were similar to thecontrol. Individual plants were selected for pod yield and market quality. Variability detected in the first backcross generation for partial resistance and agronomic traits will be useful.
Licença:: Crop Breeding and Applied Biotechnology - This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0). Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332015000300175&lng=en&nrm=iso. Acesso em: 21 mar. 2018.
DOI: http://dx.doi.org/10.1590/1984-70332015v15n3n30
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