to evaluate the effects of water deficit stress in barley germplasm collection of national gene bank ofiran, 25 genotypes collected from arid and semi arid provinces of iran and 3 sample cultivars werestudied in two environments including: non-stressed and water deficit stress. agronomical, phenologicaland morphological traits were measured. stress indices were calculated to determine tolerant ...

The expression of invertases was analyzed in vegetative organs of well-watered and water-stressed maize (Zea mays) plants. Early changes in sucrose metabolism and in acid soluble invertase expression were observed in vegetative sink and source organs under mild water stress. The organ-specific induction of acid invertase activity was correlated with an increase in the Ivr2 gene transcripts and ...

This study explores the relationship between endogenous ethylene levels in stress-induced fruit abscission in different cotton cultivars. The plants were exposed to soil waterlogging or high temperature (45C) stress during early reproductive phase. Ethylene synthesis was also modified using chemical ethylene regulators e.g. aminoethoxyvinylglycine (AVG) and 1-aminocyclopropane-1-carboxlic acid ...

An experiment was conducted to assess whether KOH applied as a foliar spray could mitigate the adverse effects of salt stress on plant growth and yield of sunflower plants. For this purpose, KOH @ 0, 0.5, 1.0, 1.5 and 2.0% was applied as a foliar spray to salt stressed and non-stressed sunflower plants. Foliar spray of KOH increased the growth and yield under non-stress and salt stressed condit...

The presence of morphine alkaloids, anti-microbial and anti-cancer metabolite, sanguinarine, in different species of Papaver genus has made it one of the most valuable plants in the pharmaceutical industry.With regard to the influence of drought and salinity on the increase of secondary metabolites, the present study attempted to investigate the effect of the mentioned stresses on the key genes...

Palisade cells from fully expanded leaves from irrigated and nonirrigated, field grown cotton (Gossypium hirsutum L. cv. Paymaster 266) were subjected to a microscopic examination to evaluate the effect of water stress on subcellular structures. The water potential difference between the two treatments was 13 bars at the time of sampling. The dimensions of the palisade cells and their density p...

We investigated the role of ethylene in the response of cotton to high temperature using cotton genotypes with genetically interrupted ethylene metabolism. In the first experiment, Sicot 71BRF and 5B (a lintless variant with compromised ethylene metabolism) were exposed to 45°C, either by instantaneous heat shock or by ramping temperatures by 3°C daily for 1 week. One day prior to the start of ...

The objective of this study was to investigate the role of β-aminobutyric acid(BABA) (0, 300µM) in reduction of oxidative damages in leaves and roots of Brassica napus L. under drought stress (0, -0.2, -0.4 MPa). β-aminobutyric acid was investigated as an internal regulator hormone and its role in defense  mechanisms against biotic and abioticstresses. In this study, BABA pretreatment prevented...

Triamidefon is a triazole derivative, which have both fungicidal and plant growth regulator (PGR) properties, and also protect plants from several types of abiotic stresses. The influential mechanism of Triamidefon on plants is not much studied. In this study effect of this compound on the drought stressed in tomato plants was investigated. The plants were subjected to 5 day interval drought st...