Data/hora: 02/06/2024 14:45:02

Biblioteca(s): | Embrapa Hortaliças; Embrapa Semiárido.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 23/01/2015
Data da última atualização: | 12/01/2018
Autoria: | SANTOS, C. A. F.; BOITEUX, L. S.
Afiliação: | CARLOS ANTONIO FERNANDES SANTOS, CPATSA; LEONARDO SILVA BOITEUX, CNPH.
Título: | Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds.
Ano de publicação: | 2015
Fonte/Imprenta: | Genetics and Molecular Research, v. 14, n. 1, p. 259-268, Jan. 2015.
DOI: | 10.4238/2015.January.16.10.
Idioma: | Inglês
Conteúdo: | Cowpea crop, through combining a range of essential minerals with high quality proteins, plays an important role in providing nutritional security to human population living in semi-arid regions. Studies on genetics of biofortification with essential minerals are still quite scarce, and the major objective of the present study was to provide genetic information on development of cowpea cultivars with high seed mineral contents. Genetic parameters heritability and minimum number of genes were estimated for seed accumulation of zinc (Zn), iron (Fe), calcium (Ca), phosphorus (P), potassium (K), and sodium (Na). Generation mean and variance analyses were conducted using contrasting parental lines, F1, F2, and backcross populations derived from IT97K-1042-3 x BRS Tapaihum and IT97K-1042-3 x Canapu crosses. High narrow-sense heritability (h2) values were found for accumulation of Fe (65-86%), P (74-77%), and K (77-88%), whereas moderate h2 values were observed for accumulation of Ca (41-56%), Zn (51-83%), and Na (50-55%) in seeds. Significant additive genetic effects as well whereas epistasis was important genetic component in Zn content. The minimum number of genes controlling the accumulation of minerals ranged from two (K) to 11 (P). Transgressive segregation was observed in F2 populations of both crosses for all minerals analyzed. The results suggest that, although under either oligogenic or polygenic control, the seed content of these six minerals in cowpea can be improved via standard breeding methods largely used for self-pollinated crops.
Palavras-Chave: | Feijão caupi; Generation mean analyses; Melhoramento genético; Variance analyses.
Thesagro: | Semente; Vigna Unguiculata.
Thesaurus Nal: | Genetic improvement; Minerals.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/134484/1/gmr5063Boiteux-9.pdf
Registro original: | Embrapa Hortaliças (CNPH)

Exemplares:

CPATSA - (54257-1) - UPC - AP - DD -  -  -  - DIS
CNPH - (39913-1) - UPC - AP - DD -  -  -  - DIS