Results 81 to 90 of about 1,195,293 (349)

Progresso genético do melhoramento de arroz de terras altas no período de 1950 a 2001 Genetic progress of upland rice between 1950 and 2001

open access: yesPesquisa Agropecuária Brasileira, 2007
O objetivo deste trabalho foi quantificar o progresso genético obtido pelo melhoramento genético na cultura do arroz de terras altas, no período de 1950 a 2001. Foram feitos quatro experimentos de campo, nas localidades: Aeroporto e Agronomia, em Viçosa,
Moacil Alves de Souza   +4 more
doaj   +1 more source

Yields of ns maize hybrids from different breeding periods [PDF]

open access: yesSelekcija i Semenarstvo, 2015
Within maize breeding program at the Institute of Field and Vegetable Crops Novi Sad, Serbia, there have been seven distinct breeding cycles spanning from the mid-1960s. Each cycle is characterised by introduction of new hybrids with higher genetic yield
Stojaković Milisav   +6 more
doaj   +1 more source

Genetic and Non-Genetics Effect on Birth, Weaning, and Yearling Weight of Bali Cattle [PDF]

open access: yes, 2011
The aim of this study was to evaluate the effect of genetic and non-genetic factors on the growth traits including birth weight, weaning, and yearling weight of Bali cattle.
Gunawan, A. (A), Jakaria, J. (Jakaria)
core  

Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms

open access: yesFEBS Letters, EarlyView.
Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze   +3 more
wiley   +1 more source

Genetic trends in the Zimbabwe’s national maize breeding program over two decades

open access: yesFrontiers in Plant Science
Monitoring genetic gains within breeding programs is a critical component for continuous improvement. While several national breeding programs in Africa have assessed genetic gain using era studies, this study is the first to use two decades of ...
Ronica Mukaro   +26 more
doaj   +1 more source

Effect of selection for productive traits in broiler male lines on embryo development

open access: yesBrazilian Journal of Poultry Science, 2009
This experiment aimed at evaluating the effect of genetic selection on embryo development of two male broiler lines (LL and LLc). LL line was selected for eight generations for growth, carcass, and reproduction traits.
GS Schmidt, EAP Figueiredo
doaj   +1 more source

Using a genetic algorithm for optimizing the functional decomposition of multiple-valued functions [PDF]

open access: yes, 1997
The genetic algorithm which determines the good functional decomposition of multiple-valued logic functions is presented. The algorithm expands the range of searching for a best decomposition, providing the optimal column multiplicity.
Kalganova, T, Kochergov, E, Strechen, N
core  

FAK-mediated mechanotransduction in skeletal regeneration [PDF]

open access: yes, 2007
The majority of cells are equipped to detect and decipher physical stimuli, and then react to these stimuli in a cell type-specific manner. Ultimately, these cellular behaviors are synchronized to produce a tissue response, but how this is achieved ...
Brunski, John   +4 more
core   +3 more sources

The intracellular domain of TLR2 is capable of high‐affinity Zn binding: possible outcomes for the receptor activation

open access: yesFEBS Letters, EarlyView.
Toll‐like receptors (TLRs) are important in the innate immune system. This study explores the zinc‐binding ability of the TLR2 TIR domain (TLR2TIR). We found that TLR2TIR binds zinc with nanomolar affinity through its cysteine residues. Two of them, C673 and C713, are vital for receptor activation, indicating that zinc may play a role in initiating ...
Vladislav A. Lushpa   +8 more
wiley   +1 more source

Avaliação e seleção precoce para crescimento de Pinus taeda Early evaluation and selection for growth in Pinus taeda

open access: yesPesquisa Agropecuária Brasileira, 2002
O objetivo deste trabalho foi avaliar a eficiência de diferentes métodos de seleção quanto aos caracteres ligados ao crescimento do fuste e o potencial da seleção precoce de genitores.
Estefano Paludzyszyn Filho   +2 more
doaj   +1 more source

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