Use of physiological traits in tree breeding for improved yield in drought-prone environments. The case of Eucalyptus globulus

Autor:	G. Toval, P. Pita, F. Ruiz, I. Cañas, F. Soria
Rok vydání:	2005
Předmět:	Stomatal conductance biology Breeding program Drought resistance Yield (finance) fungi Water stress food and beverages Soil Science Forestry Horticulture biology.organism_classification Agronomy Eucalyptus globulus Tree breeding Agronomy and Crop Science Ecology Evolution Behavior and Systematics
Zdroj:	Investigación Agraria: Sistemas y Recursos Forestales. 14:383
ISSN:	2340-3578 1131-7965
DOI:	10.5424/srf/2005143-00931
Popis:	Selecting for improved growth in drought-prone environments may lead to a trade-off between traits related to both growth and drought resistance. This paper provides a review of the use of physiological traits in breeding for yield improvement in water-limited environments. Plant responses to water stress can be grouped into strategies, which are species-specific. Once a species drought resistance strategy is known, several physiological traits can be selected to be used in the species breeding program. Despite there are multiple physiological traits involved in plant responses to drought, only a few of them have been actually used to improve both growth and drought resistance. This review highlights the relevance of stomatal conductance and water-use efficiency as well as hydraulic traits in breeding for improved growth in drought-prone environments. It is illustrated with unpublished results obtained in several research programmes that share a common objective: improving Eucalyptus globulus growth and survival in south-western Spain
Databáze:	OpenAIRE
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