نتایج جستجو برای: oa and increased leaf temperature minimum decline in leaf water potential
تعداد نتایج: 21918034 فیلتر نتایج به سال:
One of the negative effects of water stress on growth and crop production is micronutrient uptake reduction by plant root. Therefore, to evaluate the effect of foliar application of Fe and Zn on some physiological and morphological characteristics of red bean (Akhtar cultivar) under drought stress this experiment was designed as a split plot in a completely randomized block design with three re...
Leaf wetting is often considered to have negative effects on plant function, such that wet environments may select for leaves with certain leaf surface, morphological, and architectural traits that reduce leaf wettability. However, there is growing recognition that leaf wetting can have positive effects. We measured variation in two traits, leaf drip tips and leaf water repellency, in a series ...
to study the effects of used water in evapotranspiration, seed number per unit area and leaf relative water content on seed weight of canola (brassica napus l.), an experiment was conducted as a randomized complete block design, arranged in a split-plot under two conditions, i.e. supplemental irrigation and rainfed in 2005-7. two cultivars of canola (‘hyola401’ and ‘rgs003’) as subplots were gr...
Thermocouple psychrometers are the only instruments which can measure the in situ water potential of intact leaves, and which can possibly be used to monitor leaf water potential. Unfortunately, their usefulness is limited by a number of difficulties, among them fluctuating temperatures and temperature gradients within the psychrometer, sealing of the psychrometer chamber to the leaf, shading o...
In a pot experiment, the growth (Dry matter) responses of 18 rapeseed varieties to three levels of NaCl salinity induced by 1.2, 6, and 12 dS.m-1 were investigated using a factorial experiment with a randomized complete block design in 3 replications. The results indicated that salinity reduced total dry matter, Na concentration, K/Na ratio, ion selectivity of K versus Na, and leaf water potent...
water use efficiency (wue, the ratio of total dry matter to water use) became a breeding target only when it was found that carbon stable isotopes were inversely related to wue. the current study conducted under well-watered and drought conditions in the field over two years at broom’s barn research station, uk, was undertaken to investigate the extent of genotypic differences for water use, yi...
to study the effect of variable irrigation in spring on water use efficiency, quantity and quality of root and sugar yield of two sugar beet cultivars shirin and rasolan, an experiment was conducted at safiabad agriculctura research center during 2003-04 and 2004-05 cropping seasons. the experiment was designed in a split plot with four replications in which five water supply treatments 25, 50...
This study was designed to investigate the effect of Mycorrhiza symbiosis on some orphophysiological characteristics of four different pistachio rootstocks under salinity stress. This research was conducted in a completely randomized design with factorial arrangement with three factors. The factors were included rootstocks at four levels (Badami-e Riz Zarand, Qazvini, Sarakhs, and UCB1), mycorr...
Responses of stomata to environment have been intensively studied, but little is known of genetic effects on stomatal conductance or their consequences. In Pima cotton (Gossypium barbadense L.), a crop that is bred for irrigated production in very hot environments, stomatal conductance varies genetically over a wide range and has increased with each release of new higher-yielding cultivars. A c...
Abstract: In order to evaluate the effect of drought stress and salicylic acid on mineral content and some physiological traits of soybean genotypes (Glycine max L.) a greenhouse experiment was conducted as factorial based on completely randomized design with three replications in Mohaghegh Ardabil University in 2014. The first factor consisted of three levels of water deficit (85%, 65% ...
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