Background: Soil drought stress is a limiting factor of productivity in walnut (Juglans regia L). Ferredoxin (Fd) level decreases under adverse environmental stress. Functional replacement of decreased Fd by Fld (Flavodoxin) had been shown to have protective effect under abiotic stress condition....

Background and objectives: Long term exposure of tissue culture plants to unusual environmental conditions during in vitro production (e.g. high relative humidity, low CO₂ concentration during the photoperiod, high ethylene concentration and restricted air movement) induce poor development of...

Drought stress threatens human food security by reducing product yields and by limiting the practice of crop cultivation. Roots are the first to detect water deficiencies and send signals to aerial parts. The current study evaluates several responses of the roots to drought stress by considering...

The water status of fruit and nut crops is critical to the high productivity, quality and value of these crops. Water status is often estimated and managed with indirect measurements of soil moisture and models of evapotranspiration. However, cultivated trees and vines have characteristics and...

There is increased demand for irrigation scheduling tools that support effective use of the limited supply of irrigation water. An efficient precision irrigation system requires water to be delivered based on crop needs by measuring or estimating plant water stress. Leaf temperature is a good...

Persian or common walnut (Juglans regia L.) is a fruit tree of significant agricultural importance and is considered highly drought-resistant. However, the effects of different irrigation treatments and tree height on the physiology, growth and fruit quality of the walnut tree remain largely...

The incorporation of trees on traditional agricultural land has the potential for providing beneficial conditions for understory crops by altering the microclimate. Under these assumptions, we conducted a study on maize productivity intercropped in a 14-year-old walnut orchard by measuring growth...

Phytochemical research of the roots of Juglans mandshurica Maxim. (Juglandaceae) verified 37 secondary metabolites, including thirteen diarylheptanoids (1-13), five naphthoquinones (14-18), five tetralones (19-23), three lignans (24-26), three phenols (27-29), two anthraquinones (30-31), two...

One new diarylheptanoid (1) and one previously unknown ascorbic acid derivative (2) along with 48 known compounds including three ascorbic acid derivatives (3-5), three diarylheptanoids (6-8), three juglone derivates (9-11), six racemic α-tetralones (12a/b-17a/b), four anthraquinones (18-21), eight ...

Changes in the distribution of annual rainfall totals, together with the increase in temperature over the last 40 years, are causing more frequent periods of drought, and plants are more often exposed to water stress. The aim of this study was to monitor the effect of different water regimes...