Gene Flow as a Source of Adaptation of Durum Wheat to Changing Conditions Including Climate Change Double Gradient Selection Technique
Fluctuating environments are recurring scenarios in dryland agriculture with detri mental effects to crop production such as durum wheat crop that could lead to losses in yield The dryland Mediterranean type of environment in particular visavis climate is characterized by low and highly erratic annual rainfall varying from 200 to 800 mm with usually a poor rainfall distribution coupled with intermittent periods of drought and temperature extremes cold and heat that can occur at any stage of durum wheat plant development Nachit et al 1992a 1992b These environmental fluctuations and stresses are expected to amplify as climate models show relatively consistent predictions that the Mediterranean basin will become hotter and drier over the next century with annual precipitation likely to decrease by 427 and 35C increase in temperature IPCC 2007 Habash et al 2009 The assessment of the fifth report remains in agreement with the later projections including the probable increase in extreme weather events Because of limitation of irrigation on a large scale for durum wheat commercial production the only applicable alternative is the improvement of drought tolerance and yield stability through genetics and plant breeding supported by an understanding of the environment fluctuations stress physiology and the use of molecular markers This chapter gives a broad review of the durum wheat research program with emphasis on the challenges involved particularly drought research to cope with water limitations and environmental fluctuations Overall the chapter focuses on strategies to breed for fluctuating environment in the context climate changing conditions
Showing items related by title, author, creator and subject.
Title: Agronomic Performance of Salinity and Frost Tolerant Winter Wheat Genotypes in Central Asia Author: Sharma, RamDate: 2015-09-21Type: PosterStatus: Open accessThis research report shows progress made in identifying salinity tolerant winter wheat varieties in Aral Sea Region of Central Asia
Author: Landis, Douglas A.Date: 2016-07-12Type: Journal ArticleStatus: Open accessWheat is an important food security crop in central Asia but frequently suffers severe damage and yield losses from insect pests, pathogens, and weeds. With funding from the United States Agency for International Development, ...
Title: Sources of resistance in durum wheat and its wild relatives to Russian wheat aphid (Hemiptea: Aphididae) Author: Al - Ghannoum, M. I.Date: 2016-06-30Type: Journal ArticleStatus: Open accessRussian wheat aphid (RWA), Diuraphis noxia (Kurdjumov), is a serious pest of cereals in many parts of the world, particularly in dry areas. As limited resistance sources to this pest were previously identified in durum ...