نتایج جستجو برای: but increased leaf thickness

تعداد نتایج: 2902203  

2013
Yong Mok Park

Leaf characteristics of two representative deciduous-tree species in Korean peninsula were compared to assess directional ridge effect on leaf traits of both species. Leaf mass per unit area (LMA) of Rhododendron schilippenbachii in south-facing ridge slope was significantly higher than that in north-facing ridge slope, while Quercus mongolica did not change LMA. Leaf mass of Q. mongolica was i...

دلاور, محمدامیر , عزیزآبادی, الهه , گلچین, احمد ,

To study the effects of potassium (K) and drought stress on growth indices and mineral content of safflower leaf, a factorial experiment with 12 treatments and three replications was performed, using a completely randomized design, in the greenhouse of Soil Science Department, Zanjan University, Iran. The experimental treatments were a combination of four levels of K (80,130,180 and 230 mg/kg) ...

Journal: :Tree physiology 2009
D R Woodruff F C Meinzer B Lachenbruch D M Johnson

The gravitational component of water potential and frictional resistance during transpiration lead to substantial reductions in leaf water potential (Psi(l)) near the tops of tall trees, which can influence both leaf growth and physiology. We examined the relationships between morphological features and gas exchange in foliage collected near the tops of Douglas-fir (Pseudotsuga menziesii (Mirb....

Journal: :Journal of experimental botany 2006
Mark Wentworth Erik H Murchie Julie E Gray Daniel Villegas Claudio Pastenes Manuel Pinto Peter Horton

The photosynthetic characteristics of two contrasting varieties of common bean (Phaseolus vulgaris) have been determined. These varieties, Arroz and Orfeo, differ in their productivity under stress conditions, resistance to drought stress, and have distinctly different stomatal behaviour. When grown under conditions of high irradiance and high temperature, both varieties displayed evidence of p...

Journal: :علوم باغبانی 0
امیر صادقی نعمت اله اعتمادی محبوبه شمس فاطمه نیازمند

in this study, the effect of drought stress on morphological and physiological characteristics of wheatgrass and tall fescue was investigated in a factorial-split plot in time arrangement based on a completely randomized design with three replications. after turf establishment, half pots were exposed to drought stress and the half other were completely irrigated. based on the results tall fescu...

Journal: :Tree physiology 2004
Roberto Tognetti Luca Sebastiani Antonio Minnocci

Plants can remove or immobilize various environmental contaminants; however, little is known about the physiological mechanisms underlying responses to soil amendment with biosolids contaminated with heavy metals. We investigated the responses of cuttings of hybrid poplar clones Eridano and I-214 grown for a season in soil amended with nutrient-rich organic material from tanneries, which contai...

Plant growth regulators may leave positive effects on different plants. A factorial experiment using RCBD was conducted to study the impact of brassinosteroied (Br) and ethephon on growth and development of cantaloupe (Shahpasandi) in 2014, in Kerman University Research Station, Kerman, Iran. Three levels of Br (0, 0.5 and 0.75 mM) as seed soaking and two levels of ethphon (0 and 250 mg/l) as f...

2015
Dongliang Xiong Tingting Yu Tong Zhang Yong Li Shaobing Peng Jianliang Huang

Leaf hydraulic conductance (K leaf) is a major determinant of photosynthetic rate in plants. Previous work has assessed the relationships between leaf morpho-anatomical traits and K leaf with woody species, but there has been very little focus on cereal crops. The genus Oryza, which includes rice (Oryza sativa) and wild species (such as O. rufipogon cv. Griff), is ideal material for identifying...

2010
Foteini Hassiotou Michael Renton Martha Ludwig John R. Evans Erik J. Veneklaas

Leaf dry mass per area (LMA) is a composite parameter relating to a suite of structural traits that have the potential to influence photosynthesis. However, the extent to which each of these traits contributes to variation in LMA and photosynthetic rates is not well understood, especially at the high end of the LMA spectrum. In this study, the genus Banksia (Proteaceae) was chosen as a model gr...

Journal: :International journal of engineering technology and management sciences 2023

“Comparison Analysis of Leaf Spring with Eye Thickness 18mm and 17mm Using Solid works, Performance ANSYS ˮ was the subject a study. The specific load Unladen were used to compare eye thicknesses 17 mm 18 mm. leaf springs in vehicles make passengers more comfortable by reducing vertical vibration caused unevenness road geometry. When spring loses its shape over time, life decreases, which can c...

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