|
|
|
Registros recuperados: 12 | |
|
|
Carvalho Filho, José Luiz Sandes de; UFLA; Gomes, Luiz Antonio Augusto; UFLA; Maluf, Wilson Roberto; UFLA. |
A alface é uma espécie cujas plantas possuem grande variabilidade no que diz respeito à forma, cor e textura das folhas, caracterizando diferentes tipos comerciais. O grupo folhas lisas ainda se mantém como um dos mais consumidos. A caracterização do tipo de folha é essencial no desenvolvimento de um programa de melhoramento, principalmente, quando a população segregante é oriunda de parentais contrastantes para o caráter. Além disso, a maior parte das cultivares utilizada é sensível ao calor, emitindo a haste floral precocemente. Assim, o objetivo deste trabalho foi avaliar características comercias de progênies F4 de alface e a sua tolerância ao calor, visando obter cultivares com folha lisa tolerantes ao florescimento precoce, resistentes aos nematóides... |
|
Palavras-chave: 5.01.03.05-9 Melhoramento Vegetal Lactuca sativa L.; Tolerância ao calor; Folhas lisas. Lactuta sativa L.; Heat tolerance; Butterhead. |
Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6607 |
| |
|
| |
|
|
Zhang,Yuhong; Wu,Hongsheng; Xie,Jiaqin; Jiang,Ruixin; Deng,Congshuang; Pang,Hong. |
BACKGROUND: Changed temperature not only threaten agricultural production, but they also affect individual biological behavior, population and community of many insects, and consequently reduce the stability of our ecosystem. Insect's ability to respond to temperature stress evolved through a complex adaptive process, thus resulting in varied temperature tolerance among different insects. Both high and low extreme temperatures are detrimental to insect development since they constitute an important abiotic stress capable of inducing abnormal biological responses. Many studies on heat or cold tolerance of ladybirds have focused on measurements of physiological and biochemical indexes such as supercooling point, higher/lower lethal temperatures, survival... |
Tipo: Journal article |
Palavras-chave: Coccinellidae; Heat tolerance; Cold tolerance; Digital gene expression. |
Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100066 |
| |
|
|
Teixeira,Alexsandro Lara; Souza,Flávio de França; Pereira,Antonio Alves; Oliveira,Antonio Carlos Baião de; Rocha,Rodrigo Barros. |
Due to high temperatures, practically all coffee farms in the state of Rondonia are of the C. canephora species. Thus, importing arabica coffee from other states becomes necessary for composition of blends, as well as for the specialty or gourmet coffee market. The purpose of this study was to select arabica coffee genotypes that exhibit satisfactory agronomic performance under high temperature conditions. The experiment was conducted in OuroPreto do Oeste, RO, Brazil, with mean annual temperature of 25.8°C and mean annual rainfall of 2300mm year-1. The experiment was composed of 114 arabica coffee genotypes, with 103 progenies and eleven control cultivars, provided by EPAMIG. A randomized block experimental design was used with three replications, spacing... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea Arabica L.; High temperatures; Heat tolerance; Maturation cycle. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701228 |
| |
|
| |
|
| |
|
| |
|
|
He,XY; Ye,H; Ma,JL; Zhang,RQ; Chen,GC; Xia,YY. |
Annual leaf segments of eight Camellia species were used to study the heat tolerance by an electrical conductivity method, in combination with a Logistic equation to ascertain the semi-lethal high temperature by fitting the cell injury rate curve. Te relationship between the processing temperature and the cell injury rate in Camellia showed a typical "S" shaped curve, following the Logistic model. Te correlation coeficient was above 0.95. Te semi-lethal high temperature LT50 of the eight Camellia species, determined by the infection point on the curve, varied from 50 to 57 LT50 / °C, following the descending order: Camellia oleifera > C. japonica > C. polyodonta > C. semiserrata > C. nitidissima > C. gigantocarpa > C. nanyongensis > C.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Camellia; Logistic equation; Semi-lethal high temperatures; Heat tolerance. |
Ano: 2012 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572012000200007 |
| |
|
| |
|
| |
|
| |
Registros recuperados: 12 | |
|
|
|