نتایج جستجو برای: a single reciprocal crossed clone p euphratica x alba and 2 other p alba clones were planted
تعداد نتایج: 20903995 فیلتر نتایج به سال:
context: rapid stretching of the skin over the weak connective tissue leads to development of striae distensae. recently, researchers have shown special interest towards use of fractional photothermolysis in treatment of striae and several studies have shown its usefulness. our aim was to assess the efficacy of fractional co2 laser in treatment of striae alba. subjects and methods: a randomized...
Seed germination is considered a critical phase in plant development and relatively sensitive to heavy metals. White poplar (Populus alba) trees tend to accumulate Cd and Zn in their tissues. We tested if soil contamination can affect P. alba progeny, reduced seed germination and explored the distribution of mineral elements in the seed. For this purpose, fruits and seeds from female P. alba tr...
چکیدهبمنظور ایجاد روش ازدیاد درون شیشه ایی هیبرید جدید صنوبر رقم مفید (Populus euphratica Oliv. X P.alba L.) ، سرشاخه های درخت بالغ از نهالستان تحقیقاتی گروه زیست فناوری موسسه تحقیقات جنگلها و مراتع تهران جمع آوری شدند ریز نمونه حاوی جوانههای انفرادی بوسیله تیمارهای مختلف سترون سازی ضد عفونی و به محیط کشت استقرار منتقل یافتهاند. استفاده از محلول کلراید مرکوریک 1/0% بمدت 1 دقیقه با 90% توان ای...
Four new 2-arylbenzofuran derivatives, moracins V-Y (1-4), together with two known compounds, moracin N (5) and moracin P (6), were isolated from the leaves of Morus alba L. Their structures were elucidated by spectroscopic analysis. Moracins X (3) and Y (4) represent unusual substituted group compared with 2-arylbenzofuran derivatives, which were isolated from the genus Morus. Compounds 2-5 we...
The current study is the first to describe fertility dynamics in a Silver fir (Abies alba Mill.) seed orchard and among few reporting related information from mature orchard. research aim was evaluate female cone production order provide support future management measures. Observations were conducted clonal Eastern Carpathians over six years; all ramets of 44 clones zero-inflated data analyzed ...
Two hybrid poplar (Populus) clones (the fast-growing clone Beaupré (P. trichocarpa Torr. and Gray x P. deltoides Bartr. ex Marsh.) and the slow-growing clone Robusta (P. deltoides Bartr. ex Marsh. x P. nigra L.)) were grown from hardwood cuttings for one or two growing seasons (1993-1994) in either ambient or elevated (= ambient + 350 micro mol mol(-1)) CO(2) in open-top chambers at the Univers...
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...
درختان بید (salix l.) به طور طبیعی در حاشیه رودخانه ها و دره ها در استان های کشور انتشار دارند که نقش ارزنده ای در حفاظت اراضی حاشیه رودخانه ای و تولید زی توده ایفا می کنند. هدف از پژوهش پیش رو ارزیابی رشد نهال های دورگ های به دست آمده از تلاقی سه گونه بید و مقایسه آنها با والد بود. نهال های دورگ به دست آمده از تلاقیs. alba x s. alba ، s. alba x s. fragilis و s. alba x s. excelsانتخاب و در فرور...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
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