نتایج جستجو برای: salix aegyptica

تعداد نتایج: 1745  

ژورنال: :بوم شناسی گیاهان زراعی 2011
علی احدیت

سنک بید و صنوبر،monosteira unicostata ، از آفات مهم گونهﻫﺎی مختلف بید و صنوبر در بسیاری از نقاط کشور به شمار میﺭود که به طور مستقیم به برگﻫﺎ و غیرمستقیم روی کیفیت و کمیت چوب این درختان خسارت وارد میﺳﺎزد. به‎منظور بررسی میزان مقاومت گونهﻫﺎی مختلف بید به این آفت، سازوکار مقاومت آنتیﺯنوزی 11 گونه بید در شرایط آزمایشگاهی در سال 1387در ﻣﺆسسه تحقیقات جنگلﻫﺎ و مراتع تهران بررسی گردید. قلمهﻫﺎیی سه تا ش...

2015
Cai-Hua Zhang Tao Ma Wen-Chun Luo Jian-Mei Xu Jian-Quan Liu Dong-Shi Wan J. Peter W. Young

4-Coumarate:CoA ligase (4CL) genes are critical for the biosynthesis of plant phenylpropanoids. Here we identified 20 4CL genes in the genomes of two desert poplars (Populus euphratica and P. pruinosa) and salt-sensitive congener (P. trichocarpa), but 12 in Salix suchowensis (Salix willow). Phylogenetic analyses clustered all Salicaceae 4CL genes into two clades, and one of them (corresponding ...

2017
MAsAyA KATo MuNEKAzu IINuMA TosHIyuKI TANAKA HIDEKI SAKAi MIzuo MIzuNo

(Phytochemistry, 26, 2418 (1987)) Acylated Luteolin Glucosides from Salix gitgiana. MIzuo MIzuNo*, MAsAyA KATo, MuNEKAzu IINuMA, TosHIyuKI TANAKA, ' ARIKA KIMuRA, HIRoyosHI OHAsHI, HIDEKI SAKAi Besides apigenin and luteolin 7-glucoside, four novel glucosides acylated with acetic, trans-cinnamic, P-coumaric and ferulic acids, respectively were isolated from the leaves of Salix gitgiana (Salicace...

Journal: :Ambio 2011
Isla H Myers-Smith David S Hik Catherine Kennedy Dorothy Cooley Jill F Johnstone Alice J Kenney Charles J Krebs

Canopy-forming shrubs are reported to be increasing at sites around the circumpolar Arctic. Our results indicate expansion in canopy cover and height of willows on Herschel Island located at 70 degrees north on the western Arctic coast of the Yukon Territory. We examined historic photographs, repeated vegetation surveys, and conducted monitoring of long-term plots and found evidence of increase...

2016
Yajuan Zhu Guojie Wang Renqiang Li

Water is a limiting factor for plant growth and vegetation dynamics in alpine sandy land of the Tibetan Plateau, especially with the increasing frequency of extreme precipitation events and drought caused by climate change. Therefore, a relatively stable water source from either deeper soil profiles or ground water is necessary for plant growth. Understanding the water use strategy of dominant ...

2013
Anna Lehrman Tina Boddum Johan A. Stenberg Colin M. Orians Christer Björkman

While carnivores are known to be attracted to herbivore-induced plant volatiles, little is known about how such volatiles may affect the behaviour of omnivorous predators that may use both plants and herbivores as food. Here, we examine how systemically produced plant volatiles, in response to local herbivore damage, differentially attract a key omnivorous predator, Anthocoris nemorum (Heteropt...

2013
Jerzy A. Przyborowski Paweł Sulima Anna Kuszewska Dariusz Załuski Andrzej Kilian

The objectives of this study were to evaluate the usefulness of DArT markers in genotypic identification of willow species and describe genetic relationships between four willow species: Salix viminalis, S. purpurea, S. alba and S. triandra. The experimental plant material comprised 53 willow genotypes of these four species, which are popularly grown in Poland. DArT markers seem to identify Sal...

Journal: :Biological research 2009
Raphael S S Souza Marcela C Almeida Cristiano V Manoel Sebastião D Santos-Filho Adenilson S Fonseca Mario Bernardo Filho

Stannous chloride (SnC12) is used in nuclear medicine as a reducing agent to obtain technetium-99m-radiopharmaceuticals. It have been reported that natural products might reduce the genotoxic and cytotoxic effects related to SnC12. This work evaluated the biological effects of an aqueous extract of Salix alba on the survival of Escherichia coli (E. coli) AB1157 (wild type) cultures submitted to...

2005
Steven L. Petersen Tamzen K. Stringham Andrea S. Laliberte

The distribution characteristics of willow (genus Salix) can be evaluated with the use of remote sensing, geographic information systems (GIS) technologies, and spatial analysis. This information can be used to better understand willow ecology, such as willow community composition, species relationships, and associations with other landscape attributes (i.e., soils, elevation gradients, water s...

2016
Jian Zhang Huwei Yuan Min Li Yujuan Li Ying Wang Xiangjian Ma Yuan Zhang Feng Tan Rongling Wu

As a salt-tolerant arbor tree species, Salix matsudana plays an important role in afforestation and greening in the coastal areas of China. To select superior Salix varieties that adapt to wide saline areas, it is of paramount importance to understand and identify the mechanisms of salt-tolerance at the level of the whole genome. Here, we describe a high-density genetic linkage map of S. matsud...

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