نتایج جستجو برای: populus alba l

تعداد نتایج: 626684  

Journal: :Journal of cell science 1984
M Gaget C Saïd C Dumas R B Knox

Intersectional crosses between species of sections Aigeiros (Populus deltoides, P. X euramericana or P. nigra) and Leuce (P. alba or P. tremuloides) are known to be reciprocally incompatible. The site of pollen tube arrest is on the stigma surface in pollinations between pistils of section Leuce and pollen of section Aigeiros; tubes failed to penetrate the stigma surface. In reciprocal matings,...

2018
BoYoon Chang BongSeong Koo HyeonCheol Lee Joa Sub Oh SungYeon Kim

Background The innate immune system plays a crucial role in the initiation and subsequent direction of adaptive immune responses, as well as in the removal of pathogens that have been targeted by an adaptive immune response. Objective Morus alba L. was reported to have immunostimulatory properties that might protect against infectious diseases. However, this possibility has not yet been explo...

Journal: :international journal of environmental research 2011
m. rafati n. khorasani f. moattar a. shirvany f. moraghebi

metal pollution has become one of the most serious environmental problems resulting from human activity. phytoremediation utilizes plants to uptake contaminants and can potentially be used to remediate metal-contaminated sites. the present study investigates heavy metal uptake (cd, cr, and ni) from soil by different organs of populus alba and morus alba. for this purpose, cd (40, 80, and 160 m...

2016
Yan-Fei Zeng Jian-Guo Zhang Ai-Guo Duan Bawerjan Abuduhamiti

In plants, the maintenance of species integrity despite hybridization has often been explained by the co-adaption of nuclear gene complexes. However, the interaction between plastid and nuclear sub-genomes has been underestimated. Here, we analyzed the genetic structure of a Populus alba and P. tremula hybrid zone along the Irtysh River system in the Altai region, northwest China, using both nu...

Journal: :Plant & cell physiology 2005
Constantinos Prassinos Jae-Heung Ko Jaemo Yang Kyung-Hwan Han

In order to better understand the genetic regulation of secondary growth in hybrid aspen (Populus tremula L.xP. alba L.), we carried out a series of cDNA-amplified fragment length polymorphism (AFLP)-based transcriptome analyses in vertical stem segments that represent a gradient of developmental stages with regard to secondary growth. This approach allowed us to screen >80% of the transcriptom...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Sharon L Doty C Andrew James Allison L Moore Azra Vajzovic Glenda L Singleton Caiping Ma Zareen Khan Gang Xin Jun Won Kang Jin Young Park Richard Meilan Steven H Strauss Jasmine Wilkerson Federico Farin Stuart E Strand

Small, volatile hydrocarbons, including trichloroethylene, vinyl chloride, carbon tetrachloride, benzene, and chloroform, are common environmental pollutants that pose serious health effects. We have developed transgenic poplar (Populus tremula x Populus alba) plants with greatly increased rates of metabolism and removal of these pollutants through the overexpression of cytochrome P450 2E1, a k...

ژورنال: :تحقیقات جنگل و صنوبر ایران 0
رفعت اله قاسمی عضو هیأت علمی مؤسسه تحقیقات جنگلها و مراتع علیرضا مدیررحمتی عضو هیأت علمی مؤسسه تحقیقات جنگلها و مراتع

در این تحقیق تعداد 15 کلن برتر از میان ارقام بررسی شده در مرحله اول آزمایش (خزانه های سلکسیون) که عمدتآً از تاج بسته و هرمی برخوردار بوده اند، انتخاب گردید و از هر کلن تعداد 75 اصله نهال یکساله ریشه دار در قالب طرح آماری بلوکهای کامل تصادفی در اسفند ماه 1368 در اراضی مرکز تحقیقات البرز کرج مورد کاشت قرار گرفت. در پایان هر فصل رویش، قطر در محل ارتفاع برابر سینه و نیز ارتفاع درختان اندازه گیری شد ...

پروانۀ دم چنگالی بزرگ صنوبر(L. ( Cerura vinulaیکی از آفات مهم برگخوار درختان صنوبر در بجنورد بشمار می­آید. طی سالهای 1384 و1385 خسارت این آفت روی 10 کلن صنوبر که در قالب طرح بلوکهای کامل تصادفی در ایستگاه کهنه کن بجنورد کاشته شده بودند، مورد بررسی قرار گرفت. به­این منظور تعداد 9 اصله نهال در وسط هر کرت آزمایشی انتخاب گردید و از اوائل بهار تا اواخر تابستان به فاصلۀ هر 15 روز یکبار نمونه­برداری ر...

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