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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Characterization of diploid Arachis interspecific hybrids for pest resistance.
Autores:  PAULA, A. F. de
DINATO, N. B.
VIGNA, B. B. Z.
FAVERO, A. P.
Data:  2019-03-08
Ano:  2019
Palavras-chave:  Wild species
Pre-breeding
Enneothrips Flavens
Stegasta Bosquella
Plant breeding
Resumo:  In Brazil, the thrips (Enneothrips flavens Moulton) and rednecked peanutworm (Stegasta bosquella Chambers) are considered key pests for the peanut crop. Wild species show resistance to both of these pests, and can be used in breeding programs. The production of the sterile interspecific hybrids is necessary, which could be colchicine treated to get a synthetic amphidiploid with the same or similar genomic configuration of cultivated peanut. In this context, this study proposed the hybridization of wild pest-resistant species in 18 distinct combinations, obtaining the interspecific hybrids of Arachis and completing their characterization by (i) the reproductive characterization through pollen stainability with 2% acetocarmine (AC) solution with glycerin and 0.25% tetrazolium solution (TZ), (ii) the molecular certification of hybridization using microsatellite markers, and (iii) the morphological characterization using 61 morphological traits with Principal Component Analysis. Using reproductive, morphological and molecular characterizations, we identified six hybrid plants of the following crosses: three from A. magna V 13751 × A. kuhlmannii V 9243, two from A. magna V 13751 × A. kempff-mercadoi V 13250, and one from A. magna K 30097 × A. kuhlmannii V 7639. Amphidiploids can be reached based on these diploid plants and they can be used in breeding programs aiming pest resistance introgression.

bitstream/item/193800/1/Paula-et-al-2019-Characterization-of-diploid-Arachis-interspecific-hybrids-for-pest-resistance.pdf
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  24746

http://www.alice.cnptia.embrapa.br/alice/handle/doc/1106781

10.1590/1678-4499.2018130
Editor:  Bragantia, v.78, n. 1, p. 96-108, 2019.
Relação:  Embrapa Pecuária Sudeste - Artigo em periódico indexado (ALICE)
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