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Camila Pegoraro,Roberta Manica-Berto,F?bio Clasen Chaves,Carolina Terra Borges,Jader Job Franco,Cesar Valmor Rombaldi,Jorge Adolfo Silva 한국원예학회 2010 Horticulture, Environment, and Biotechnology Vol.51 No.3
Expression of genes involved in endomembrane transport and cell wall metabolism, particularly in synthesis and degradation of cell wall macromolecules were compared during the ripening of a white melting flesh cultivar, Chimarrita and a yellow non-melting flesh cultivar, Granada in order to evaluate their association with fruit softening. In both, most genes were up-regulated as ripening evolved. In ‘Chimarrita’, overall higher transcript accumulation occurred at 95 days after anthesis, while in ‘Granada’ higher relative transcription was detected at 115 days after anthesis. Although transcript accumulation was correlated with fruit softening, the process does not seem to be totally dependent on the set of studied genes, since the peak of RNA abundance occurred when flesh firmness had already decreased.
Importance of Heat Shock Proteins in Maize
Pegoraro, Camila,Mertz, Liliane Marcia,Da Maia, Luciano Carlos,Rombaldi, Cesar Valmor,De Oliveira, Antonio Costa 한국작물학회 2011 Journal of crop science and biotechnology Vol.14 No.2
Abiotic and biotic stress conditions cause extensive losses to maize production, mainly due to protein dysfunction in these condi-tions. In higher plants, the occurrence of heat-shock proteins (HSPs) in response to different environmental stresses is a universal phenomenon and has been well documented. Many studies have demonstrated that most HSPs are involved in many regulatory path-ways, act as molecular chaperones for other cell proteins, and have strong cytoprotective effects. Although many functional roles for HSPs are known, the mechanisms for these multiple functions are not entirely understood. Here we reviewed the correlation among HSP genes/proteins and plant tolerance, especially maize, in different environmental stresses. Due to the low availability of informa-tion regarding the expression of HSP genes in response to different stresses in maize, we decided to mine databases in order to gener-ate ew insights related to this topic.
Importance of Heat Shock Proteins in Maize
Camila Pegoraro,Antonio Costa de Oliveira,Liliane Marcia Mertz,Luciano Carlos da Maia,Cesar Valmor Rombaldi 한국작물학회 2011 Journal of crop science and biotechnology Vol.14 No.2
Abiotic and biotic stress conditions cause extensive losses to maize production, mainly due to protein dysfunction in these conditions. In higher plants, the occurrence of heat-shock proteins (HSPs) in response to different environmental stresses is a universal phenomenon and has been well documented. Many studies have demonstrated that most HSPs are involved in many regulatory pathways,act as molecular chaperones for other cell proteins, and have strong cytoprotective effects. Although many functional roles for HSPs are known, the mechanisms for these multiple functions are not entirely understood. Here we reviewed the correlation among HSP genes/proteins and plant tolerance, especially maize, in different environmental stresses. Due to the low availability of information regarding the expression of HSP genes in response to different stresses in maize, we decided to mine databases in order to generate new insights related to this topic.
Fernandes Rebeca Catanio,Busanello Carlos,Viana Vívian Ebeling,Venske Eduardo,de Oliveira Victoria Freitas,Lopes Jennifer Luz,da Maia Luciano Carlos,Costa de Oliveira Antonio,Pegoraro Camila 한국작물학회 2022 Journal of crop science and biotechnology Vol.25 No.3
Wheat is a staple food for a large part of the world's population and faces a continuous demand for increased productivity. The presence of genetic variability allows the success in developing cultivars with higher yield. The understanding of the genetic variability available is crucial for their efective use in breeding programs. Inheritance of wheat yield components is complex, due to polygenic control and the strong infuence of the environment. Therefore, an accurate heritability estimation can accelerate the selection gains towards increasing wheat yield. Thus, this study aimed to characterize agronomic traits related to yield in a collection of 99 wheat accessions used in Brazil. In addition, the heritability of these traits was estimated. The studied accessions showed variability for yield, which can be explained by the presence of variability in most yield components. Cluster analysis showed that there is variability in wheat genotypes, however, the introduction of new sources of variability in crossing blocks or the induction of mutations is suggested. The broad-sense heritability for grain yield was considered high, as well as for most of the studied agronomic traits, suggesting that it is possible to obtain genetic gain with selection in this environment. However, for greater accuracy, genetic gain values should be estimated and considered when designing selection strategies. Hectoliter weight showed low heritability, demonstrating the complexity of selection for this trait. In summary, this study demonstrates the presence of genetic variability and high heritability for agronomic traits, enabling genetic gain in breeding programs using these wheat accessions.