|
|
|
| Registros recuperados: 11 | |
|
| |
|
|
| Mori, Masahiko; Onishi, Kazumitsu; Tokizono, Yoshiro; Shinada, Hiroshi; Yoshimura, Toru; Numao, Yoshinori; Miura, Hideho; Sato, Takashi; 大西, 一光; 三浦, 秀穂. |
| Cold stress at the booting stage in rice induces spikelet sterility because of aberrant microspore development, which often seriously damages seed production. Some breeding lines with high cold tolerance were developed by using tropical japonica variety Silewah as a donor of cold tolerance; however, the genetic factors that confer cold tolerance of this variety have not been comprehensively analyzed. In this study, phenotypic and molecular characterization of novel cold-tolerant strains derived from crosses with Silewah was performed to identify quantitative trait loci (QTLs) responsible for cold tolerance. Molecular marker analysis revealed that 2 cold-tolerant strains carried chromosomal segments of Silewah at the same genomic regions on chromosomes 3, 4... |
|
Palavras-chave: Oryza sativa; Cold tolerance; Booting stage; QTL; Phenotypic selection; Marker-assisted selection; Exotic germplasm. |
| Ano: 2011 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3040 |
| |
|
| |
|
| |
|
|
| León Velasco, Humberto. |
| En el Colegio de Postgraduados se han formado dos generaciones de híbridos y progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres variables; y (f) comparar... |
| Tipo: Tesis |
Palavras-chave: Sorghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío; Doctorado; Genética; Combining ability; Hybrids; Cold tolerance. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1207 |
| |
|
| |
|
|
| Verissimo,Mario Alvaro Aloisio; Oliveira,Ricardo Augusto de; Silva,Sérgio Delmar dos Anjos e; Daros,Edelclaiton; Härter,Adílson. |
| Abstract: The objective of this work was to estimate the genetic parameters for the performance prediction of sugarcane (Saccharum spp.) families under natural cold stress, in Southern Brazil, and to identify the best combinations of parents aiming at the selection for tolerance to cold. Fifty-three full-sib families were evaluated in an incomplete block design, with five replicates per family, in the municipality of Pelotas, in the state of Rio Grande do Sul, Brazil. Harvest occurred in August 2013, nine months after planting and after cold spells with negative temperatures down to -2.2ºC. Statistical analyses, performed with the mixed model methodology, detected significant differences among families. Heritability estimates among progeny means were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum; Cold tolerance; Plant breeding; Selection. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500583 |
| |
|
| |
|
| |
|
|
| 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 |
| |
|
| |
| Registros recuperados: 11 | |
|
|
|
