نتایج جستجو برای: drought stress indices

تعداد نتایج: 536975  

Journal: : 2022

Determining the most Tolerant Genotypes of Hashemi Rice Mutant (M3) in Response to Drought Stress using Physiological Growth Indices and Enzymatic Changes

2009
F. Caparrini F. Manzella

We present here the first experiments for an integrated system that is under development for drought monitoring and water resources assessment in Tuscany Region in central Italy. The system is based on the cross-evaluation of the Standardized Precipitation Index (SPI), Vegetation Indices from remote sensing (from MODIS and SEVIRIMSG), and outputs from the distributed hydrological model MOBIDIC,...

DOR: 98.1000/2383-1251.1398.6.145.11.1.1575.1610 Extended Abstract Introduction: Agriculture has been influenced by different abiotic stresses such as temperature, drought and salinity, which reduces roughly half of the yield of crops. In many forage plants, germination and early seedling growth are the most sensitive stages of their growth in the face of environmental stresses. Current r...

2013
Lu Liu Yang Hong James E. Hocker

This study is intended to examine the past drought and predict future drought scenarios for Arkansas-Red River Basin with comprehensive drought indices ranging from meteorology, hydrometeorology to hydrology. In this proceeding, we present some early results and analysis with the Standardized Precipitation Index (SPI) and the Palmer Drought Severity Index (PDSI). Historical climate data within ...

فرجی, ابوالفضل,

In order to evaluate the response of 20 lines and cultivars of soybean to water deficit stress, an experiment was conducted at Agricultural Research Station of Gorgan in 2011 and 2012. For this Purpose, 2 separate experiments was conducted, each one in randomized complete block design, with 3 replications. In first experiment, all soybean genotypes were irrigated based on 50 mm evaporation from...

Journal: :Global change biology 2014
Daniel A Sims Edward R Brzostek Abdullah F Rahman Danilo Dragoni Richard P Phillips

Given that forests represent the primary terrestrial sink for atmospheric CO2 , projections of future carbon (C) storage hinge on forest responses to climate variation. Models of gross primary production (GPP) responses to water stress are commonly based on remotely sensed changes in canopy 'greenness' (e.g., normalized difference vegetation index; NDVI). However, many forests have low spectral...

2014
ZENGCHAO HAO AMIR AGHAKOUCHAK

Accurate and reliable drought monitoring is essential to drought mitigation efforts and reduction of social vulnerability. A variety of indices, such as the standardized precipitation index (SPI), are used for drought monitoring based on different indicator variables. Because of the complexity of drought phenomena in their causation and impact, droughtmonitoring based on a single variable may b...

2015
Zhen Duan Daiyu Zhang Jianquan Zhang Hongyan Di Fan Wu Xiaowen Hu Xuanchen Meng Kai Luo Jiyu Zhang Yanrong Wang

Drought and high salinity are two major abiotic factors that restrict the productivity of alfalfa. By application of the Agrobacterium-mediated transformation method, an oxidative responsive gene, CsALDH12A1, from the desert grass Cleistogenes songorica together with the bar gene associated with herbicide resistance, were co-transformed into alfalfa (Medicago sativa L.). From the all 90 transfo...

Journal: :علوم گیاهان زراعی ایران 0
عبدالهادی حسین زاده منصور خضری عفراوی سید تراب میری علی پیغمبری

twenty five durum wheat lines were evaluated under drought stress and non-stress conditions employing randomized complete block design of 4 replications. significant differences were observed among the lines for most traits in either stress or non-stress conditions. correlation analysis under non-stress conditions indicated that grains per spike and number of spikes per m2 and while under stres...

2013
S. Niemeyer

Article available on line / Article disponible en ligne à l’adresse : -------------------------------------------------------------------------------------------------------------------------------------------------------------------------http://om.ciheam.org/article.php?IDPDF=800451 ----------------------------------------------------------------------------------------------------------------...

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