نتایج جستجو برای: 08 mpa water stress treatment photosynthesis rate
تعداد نتایج: 3029581 فیلتر نتایج به سال:
This research carried out to evaluate responses of rice genotypes and cultivars to salt stress using a factorial experiment with complete block randomized design in three replications, in Dankook University, South Korea at 2012.First factor was 16 rice genotypes and cultivars at vegetable growth stage and second factor was soil salinity levels (0.8 ds m-1 as control and 6.2 ds m-2 ). Salt stres...
Ice formation in the xylem sap produces air bubbles that under negative xylem pressures may expand and cause embolism in the xylem conduits. We used the centrifuge method to evaluate the relationship between freeze-thaw embolism and conduit diameter across a range of xylem pressures (Px) in the conifers Pinus contorta and Juniperus scopulorum. Vulnerability curves showing loss of conductivity (...
The objectives of the study were to identify the relevant hydraulic parameters associated with stomatal regulation during water stress and to test the hypothesis of a stomatal control of xylem embolism in walnut (Juglans regia x nigra) trees. The hydraulic characteristics of the sap pathway were experimentally altered with different methods to alter plant transpiration (Eplant) and stomatal con...
To study the effect of mulch and two irrigation levels on olive cultivar ‘Manzanila’, two experiments were conducted. The first experiment evaluated the effect of seven types of mulch in plant-less pots; the second one was conducted on olives as a factorial according to a complete randomized design with 4 replications. In this experiment, seven mulch types (gravel mulch, pistachio shell mulch, ...
We studied the effects of five thinning treatments (T1 = 5.5, T2 = 11, T3 = 16.5, T4 = 22.5 and T5 = 28.5 m(2) ha(-1) basal area under bark) x two fertilizer treatments (F0 = unfertilized and F1 = fertilized with 400 kg ha(-1) N plus 229 kg ha(-1) P) on growth and water relations of pole-sized Eucalyptus marginata J. Donn ex Sm. trees growing in southwestern Australia. Thinning reduced leaf are...
Annexins are a family of calcium- and membrane-binding proteins that are important for plant tolerance to adverse environmental conditions. Annexins function to counteract oxidative stress, maintain cell redox homeostasis, and enhance drought tolerance. In the present study, an endogenous annexin, STANN1, was overexpressed to determine whether crop yields could be improved in potato (Solanum tu...
reduction of deleterious effects of salt stress using some plant bioregulators has been reported in different plant species. salicylic acid (sa) has been considered as a signaling molecule and it is known to ameliorate the oxidative damage caused by environmental stresses such as salt stress. the present study was conducted to investigate the effects of sa on different growth characteristics, p...
one of the important issues in the arid and semi-arid regions is the water deficit and soil salinity. therefore, selecting tolerant species to salinity and drought especially in seed germination and emergence stage is important. in the present study the effects of drought and salt stress on seed germination of vetch (vicia villosa l.) which is palatable forage was investigated. the germination ...
With the provoked environmental constraints under extreme climatic events, a better understanding of plant responses to these stresses helps in obtaining sustainable productivity. Wheat is significant cereal crop for burgeoning population; its yield significantly limited by too little water rhizosphere. The ramifications deficiency on wheat can be reduced application vermicompost. objective cop...
To study the effects of soil phosphorus (P) application on growth and water relations and nutrient concentration of pistachio seedlings (Badami-e-Zarand) under water stress, a greenhouse experiment was conducted. Treatments were arranged in a factorial manner as a completely randomized design with three replications. Treatments consisted of six P levels (0, 30, 60, 90, 120 and 150 mg P Kg-1 soi...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید