Consulta: subjectFacets:"Italian ryegrass"
Registros recuperados: 5
Data/hora: 11/06/2024 18:37:43

Genotypic variation of Agrobacterium-mediated transformation of Italian ryegrass
Provedor de dados: 69
Autores: Lee,Ki-Won; Choi,Gi Jun; Kim,Ki-Yong; Yoon,Sei Hyung; Ji,Hee Chung; Park,Hyung Soo; Lim,Young Chul; Lee,Sang-Hoon.
In the present study, genotypic variation of Agrobacterium-mediated transformation of Korean Italian ryegrass has been evaluated. Mature seed-derived calli of seven cultivars were inoculated and co-cultured with Agrobacterium tumefaciens carrying the binary vector pCAMBIA1301, which contains a reporter gene (gus) and a plant selectable marker gene conferring resistance to hygromycin (hpt) in the T-DNA region. The effects of several factors such as callus type and callus age on transformation effectiveness and the expression of the GUS gene were investigated. The highest transformation effectiveness (6.7%) was obtained with the Hwasan 101 cultivar when 9-week-old calli (type-I) were inoculated with Agrobacterium. The overall transformation rates of the...
Tipo: Journal article
Palavras-chave: Agrobacterium; Forage crop; Italian ryegrass; Transgenic plants.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000300008

Soil aggregation in a crop-livestock integration system under no-tillage
Provedor de dados: 90
Autores: Souza,Edicarlos Damacena de; Costa,Sérgio Ely Valadão Gigante de Andrade; Anghinoni,Ibanor; Carvalho,Paulo César de Faccio; Oliveira,Eric Victor Ferreira de; Martins,Amanda Posselt; Cao,Eduardo; Andrighetti,Marcelo.
Grazing intensities can influence soil aggregation, which can be temporarily and permanently affected. The objective of this study was to evaluate the aggregate stability in water at the end of a soybean cycle and during pasture development in a crop-livestock integration system under no-tillage and grazing intensities. The experiment was initiated in 2001, in a dystrophic Red Latosol, after soybean harvest. Treatments consisted of pasture (black oat + Italian ryegrass) at heights of 10, 20 and 40 cm, grazed by young cattle, and a control (no grazing), followed by soybean cultivation, in a randomized block design. Soil samples were collected at the end of the soybean cycle (May/2007), during animal grazing (September/2007) and at the end of the grazing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black oat; Italian ryegrass; Mean weighted diameter; Soil structure.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400033

The weibull distribution to describe aboveground biomass of Lolium multiflorum Lam., in relation to rate of nitrogen application
Provedor de dados: 115
Autores: Gorgoso-Varela,José Javier; Oliveira-Prendes,José Alberto; Afif-Khouri,Elías; Palencia,Pedro.
Abstract Characterization of forage biomass in pasture land is complicated by the temporal and spatial variability that result from variation in vegetation patch sizes. These factors along with topography, water location and distribution of fertilizer result in non-uniform grass. The aim of the study was to evaluate the use of the three-parameter Weibull distribution to describe aerial dry matter (DM) production in the first harvest of a mixture of three Italian ryegrass (Lolium multiflorum Lam.) cultivars (the tetraploid ‘Jivet’ and ‘Barspirit’, and the diploid ’Barprisma’) in Asturias (N Spain). The trial was established in a randomized complete block design with three blocks of 100 m2 (20 m x 5 m) and a fertilizer treatment with three levels (0, 40 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Productivity; Nitrogen fertilization; Density function; Moments; Italian ryegrass.
Ano: 2018
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952018000100067

Partitioning of water soluble carbohydrates in vegetative tissues of Lolium multiflorum Lam. ssp. italicum cv. Lema
Provedor de dados: 61
Autores: Sandrin,Carla Zuliani; Domingos,Marisa; Figueiredo-Ribeiro,Rita de Cássia Leone.
In temperate grasses, fructans are the major storage polysaccharides, being accumulated mainly in mature leaf sheaths, and also in the roots. The partitioning of carbohydrates within different organs regulates plant growth and development. The aim of the present work was to analyze the partitioning of water soluble carbohydrates in five different parts (elongating leaf blades, expanded leaf blades, upper and lower segments of the stubble, and roots) of plants of L. multiflorum cv. Lema, in order to contribute to an understanding of soluble carbohydrates distribution in these plants. Soluble carbohydrates and total fructose were analyzed in plants cultivated during 4 months in a glasshouse, by colorimetric, TLC and HPAEC-PAD techniques. Results showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fructan; Grass; Italian ryegrass; Sugars.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000200006

Stability in chromosome number and DNA content in synthetic tetraploids of  Lolium multiflorum after two generations of selection
Provedor de dados: 65
Autores: Pereira,Roselaine Cristina; Santos,Natália de Souza; Bustamante,Fernanda de Oliveira; Mittelmann,Andrea; Techio,Vânia Helena.
ABSTRACT: Chromosome doubling of Italian ryegrass genotypes ( Lolium multiflorum Lam.) adapted to the brazilian edaphoclimatic conditions is an important strategy used by breeders and aims to obtain more vigorous genotypes with better forage quality and disease resistance. The effectiveness of chromosome doubling can be measured by genetic stability and fertility rates of plants over generations. However, a common problem in the polyploidization process is the regeneration of mixoploid plants that have impaired fertility and genetic stability. The objective of this study was to verify if progenies of recently tetraploidized plants remain stable regarding DNA content and chromosome number, over two generations. Progenies of L. multiflorum plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromosomal duplication; Mixoploidy; Italian ryegrass; Plant breeding.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200401