most part of durum wheat is produced in semitropical dryland regions in iran. heat and drought stresses are the main constraints in these regions. so, identification of durum wheat cultivars with high yield and tolerant to these stresses is the main breeding strategy in dryland agricultural research institute. the genotype capeiti was evaluated at gachsaran agricultural research station from 19...

River and the middle reaches of the Yellow River Z.C. Zhou*, Z.T. Gan, Z.P. Shangguan and Z.B Dong Department of Tourism and Environmental Sciences, Shaanxi Normal University, Xi’an, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, China; Key Laboratory of Disaster Survey and Me...

IN an earlier publication (Deuchar & Dryland, 1964) it was reported that a-methyl-norvaline, an amino acid described by Ross et al. (1961), whose structure resembles that of both valine and leucine (see below), caused a visible reduction in the quantity of haemoglobin formed by explants of the area vasculosa of the 48-hr, chick embryo, as compared with controls explanted without the analogue pr...

In this study we present a technique to discriminate between climate or human-induced dryland degradation, based on evaluations of AVHRR NDVI data and rainfall data. Since dryland areas typically have high inter-annual rainfall variations and rainfall has a dominant role in determining vegetation growth, minor biomass trends imposed by human influences are difficult to verify. By performing man...

Plant species in dryland ecosystems are limited by water availability and may be vulnerable to increases in aridity. Methods are needed to monitor and assess the rate of change in plant abundance and composition in relation to climate, understand the potential for degradation in dryland ecosystems, and forecast future changes in plant species assemblages. I employ nearly a century of vegetation...

Dryland ecosystems cover more than 30% of the terrestrial area of China, while processes that shape the biogeographic patterns of bacterial and fungal β-diversity have rarely been evaluated synchronously. To compare the biogeographic patterns and its drivers of bacterial and fungal β-diversity, we collected 62 soil samples from a typical dryland region of northwest China. We assessed bacterial ...