regional vegetation plays an important role in modeling ecosystem changes and conservation. meteorological drought indices which are directly obtained from such meteorological data as precipitation can't be useful in drought monitoring if those data are absence. therefore, remote sensing techniques may provide an efficient technique for drought monitoring. in this study, the values of norm...

‘DALSA 1618’ (Reg. no. CV-291, PI 702594) is a first-generation intraspecific St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] hybrid developed by Texas A&M AgriLife Research in Dallas, TX, from cross between drought-resistant polyploid female parent, TAES 5384 (PI 300130, GRIN National Plant Germplasm System), and semi-dwarf shade-tolerant diploid pollen donor, ‘Amerishade’. DALSA 1...

Water is usually the main limiting factor for soybean productivity worldwide and yet advances in genetic improvement for drought resistance in this crop are still limited. In the present study, we investigated the physiological and molecular responses to drought in two soybean contrasting genotypes, a slow wilting N7001 and a drought sensitive TJS2049 cultivars. Measurements of stomatal conduct...

Drought is one of the major abiotic constraints on wheat yields and also for sustainability production levels around world. In near future, occurrence likelihood droughts predicted to become more common, due changing climatic conditions, thereby posing a serious threat food security system. Heterogeneity, in its time severity levels, likely further augment complexity drought conditions. Althoug...

South-eastern Australia covers approximately 14% of Australia land mass, and is very important for Australia’s community and economy. In this work, the Weather Research and Forecasting (WRF) regional model was run to simulate the severe drought that happened and then (partially) recovered in this region from 2000 through 2008. The model used the following physics schemes: WRF Single Moment 5-cl...

Recognizing that, over the last several years, extreme rainfall has led to hazardous stress in humans, animals, plants, and even infrastructure, present study, we aimed investigate characteristics of droughts Free State (FS) Province South Africa order determine future likelihood reoccurrences precipitation extremes using generalized value distribution (GEV) frequency analysis (EFA). In this re...

The ability of plants to tolerate salt and drought conditions is crucial for agricultural production worldwide. The increased understanding of the regulatory networks controlling drought stress response has led to practical approaches for engineering salt and drought tolerance in plants. By a single-pass sequencing of randomly selected clones from a ë ZAP-cDNA library generated from ethephon-tr...

Phospholipases A2 (PLA2s) are known to mediate signaling cascades during plant growth and development, as well as biotic and abiotic stress responses. In this context, the present study provides extensive characterization of specific PLA2s in durum wheat, and assesses their involvement in durum wheat response to drought stress. In durum wheat leaves, four full-length expressed sequences encodin...

cotton aphid, aphis frangulae gossypii glover, is a major pest of cucumber in iran. one of the important parasitoids playing role in population control of this pest in the fields and greenhouses is lysiphlebus fabarum marshall. in this study, we investigated sensitivity of different instars of cotton aphids and pupal stage of l. fabarum to field recommended and half-recommended concentration of...