Data/hora: 01/06/2024 11:34:24

Biblioteca(s): | Embrapa Agropecuária Oeste.
Data corrente: | 16/10/2006
Data da última atualização: | 23/10/2006
Autoria: | RUSCHEL, R.
Título: | Selection for oil and relationships among oil, protein, and lysine in an opaque-2 population of maize (Zea mays L.).
Ano de publicação: | 1972
Fonte/Imprenta: | 1972.
Páginas: | 61 f.
Idioma: | Inglês
Notas: | Thesis (Doctor of Philosophy) - Purdue University.
Conteúdo: | Three methods of selection for high oil content in the kernel were applied to opaque-2 Synthetic A population of maize, progeny method with on cycle of selection, and full-si and helf-sib methods with two cycles ofselection each. Intensities of selection were between 1.1. and 1.4 standar units. The first cycle of selection was grown in Indian and the second in Hawaii. The three methos were equally effective for increasing the percent of oil in the kernel by an average of 0.37 percent over two generations. The progeny method resulted in a significant increase of 0.70 percent in the germ as a percent of the kernel. A xenia effect was observed for oil content. The lysine level of the protein was not affected by the oil selection. However, a correlated response between oil and protein was detected indicating that selection ofr high oil content in kernel may be used to increase the protein level in the kernel in this opaque-2 population. Correlation coefficients were calculated between percent of oil, protein, and lysine in germ, and protein, and lysine in endosperm of opaque-2 kernels from 44 ears selected to represent a wide range for oil content In the germ, oil and protein were negatively associated. Percent of protein in kernel was positively correlated with percent of lysine in kernel and negatively correlated with lysine as a percent of protein in kernel. Significant correlations between oil and germ size or percent indicate thtat selection for high oil in opaque-2 maize should increase the germ in size, (...)
Palavras-Chave: | Opaco-2.
Thesagro: | Lisina; Melhoramento; Milho; Óleo; Proteína; Zea Mays.
Categoria do assunto: | --
Registro original: | Embrapa Agropecuária Oeste (CPAO)
Exemplares: | CPAO - (27978-1) - ADP - TS - -- - T 36/72 -  - 90.00046 - DIS