Partial resistance to leaf rust in a collection of ancient Spanish barleys

A collection of 569 Spanish barley accessions was screened for resistance to leaf rust (Puccinia hordei Otth) in the field at Cordoba during the 2000-2001 season. The level of resistance ranged from very low to very high. In 14% of the accessions the relative AUDPC (L94 = 100%) was lower than 10%. Selected accessions that were most resistant in the field, were tested in the seedling stage under controlled conditions. Macroscopic components of resistance indicated that six lines had a high level of partial resistance close to check cv. Vada and one line a similar level of partial resistance. Histological studies indicated that the resistance was based on a high percentage of early aborted colonies and reduction in colony size without plant cell necrosis. Three of the selected lines showed high percentage of plant cell necrosis associated with established colonies, which indicates a combination of prehaustorial resistance with late acting incomplete posthaustorial resistance. Although the new barley varieties already incorporate some partial resistance, new sources of partial resistance like these are needed to improve durability of the resistance

Characterization of Lr46, a gene conferring partial resistance to wheat leaf rust

Components of resistance conferred by the Lr46 gene, reported as causing "slow rusting" resistance to leaf rust in wheat, were studied and compared with the effects of Lr34 and genes for quantitative resistance in cv. Akabozu. Lr34 is a gene that confers non-hypersensitive type of resistance. The effect of Lr46 resembles that of Lr34 and other wheats reported with partial resistance. At macroscopic level, Lr46 produced a longer latency period than observed on the susceptible recurrent parent Lalbahadur, and a reduction of the infection frequency not associated with hypersensitivity. Microscopically, Lr46 increased the percentage of early aborted infection units not associated with host cell necrosis and decreased the colony size. The effect of Lr46 is comparable to that of Lr34 in adult plant stage, but in seedling stage its effect is weaker than that of Lr34

Scalar and vector games in the evaluation of social and environmental disclosure and their relationship with market value

This study evaluated the association of social, environmental and socio-environmental disclosure with the market value of Brazilian companies with high environmental impact based on the Game Theory. To perform the analysis, rankings were developed by using scalar and vector gaming techniques. After the construction of the rankings, the association between them was verified through Kendall’s correlation analysis. The findings indicate a positive association of social, environmental and socio-environmental disclosure with the market value of Brazilian companies with high environmental impact. In addition, there was an increase in the degree of association during the investigated periods. This result suggests that the market is increasingly demanding regarding the disclosure of this information, which indicates that the disclosure of these information can bring competitive advantages in relation to the market value

Derecho y políticas ambientales en Castilla y León

Derecho y políticas ambientales en Castilla y Leó

Jurisprudencia ambiental en Castilla y León (Segundo semestre 2017)

Jurisprudencia ambiental en Castilla y León (Segundo semestre 2017

Notas sobre la hoja de ruta hacia una economía hipocarbónica competitiva en 2050 (Comunicación de la Comisión de 8 de marzo de 2011, COM(2011) 112 final)

Se intenta en este trabajo dar noticia y hacer un primer análisis de la Comunicación de la Comisión de 8 de marzo de 2011, COM(2011) 112 final, por la que se aprueba la Hoja de Ruta hacia una Economía Hipocarbónica Competitiva en 2050. En este sentido, se constata la necesidad de un cambio de política en materia energética y se analizan los impactos financieros y sectoriales de la propuesta, para concluir con una valoración crítica del documento, haciendo notar su carácter ambicioso y sus profundas implicaciones en materia de política energética

JURISPRUDENCIA AMBIENTAL EN CASTILLA Y LEÓN

JURISPRUDENCIA AMBIENTAL EN CASTILLA Y LEÓ

JURISPRUDENCIA AMBIENTAL EN CASTILLA Y LEÓN

JURISPRUDENCIA AMBIENTAL EN CASTILLA Y LEÓ