نتایج جستجو برای: lolium perenne

تعداد نتایج: 2767  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم پایه 1388

جنس lolium یکی از مهمترین گرس های علوفه ای مناطق معتدله است که از نواحی مدیترانه ای منشأ گرفته است. با توجه به گسترش طبیعی این جنس در ایران، شناسایی نمونه های موجود، بررسی تنوع ژنتیکی آنها و استفاده از این تنوع در به نژادی گیاهان از اهمیت ویژه ای برخوردار است. بنابراین، در تحقیق حاضر کلکسیون lolium بانک ژن گیاهی ملی ایران شامل 111 جمعیت در مزرعه کشت و شناسایی شده و همچنین تنوع ژنتیکی آنها بر اس...

2012
Xu Hong Zhang You Shan Wang Jun Lin

Arbuscular mycorrhizal fungi (AMF), a special microorganism can connect soil and a plant directly, plays an important role in environmental remediation [1]. When the plant is in the heavy metal adversity, mycorrhizal association can enhance the resistance to the metals of plants [2]. Chen et al. [3], reported Cu uptake by four kind of mycorrhizal plants including two native plant species, Coreo...

2011
M. Iftikhar Hussain Manuel J. Reigosa

In this study, the effect of two allelochemicals, benzoxazolin-2(3H)-one (BOA) and cinnamic acid (CA), on different physiological and morphological characteristics of 1-month-old C(3) plant species (Dactylis glomerata, Lolium perenne, and Rumex acetosa) was analysed. BOA inhibited the shoot length of D. glomerata, L. perenne, and R. acetosa by 49%, 19%, and 19% of the control. The root length o...

2017
Elizabeth Karn Marie Jasieniuk

Management of agroecosystems with herbicides imposes strong selection pressures on weedy plants leading to the evolution of resistance against those herbicides. Resistance to glyphosate in populations of Lolium perenne L. ssp. multiflorum is increasingly common in California, USA, causing economic losses and the loss of effective management tools. To gain insights into the recent evolution of g...

Journal: :Genetics 2002
J King I P Armstead I S Donnison H M Thomas R N Jones M J Kearsey L A Roberts A Thomas W G Morgan I P King

A single chromosome of the grass species Festuca pratensis has been introgressed into Lolium perenne to produce a diploid monosomic substitution line 2n = 2x = 14. In this line recombination occurs throughout the length of the F. pratensis/L. perenne bivalent. The F. pratensis chromosome and recombinants between it and its L. perenne homeologue can be visualized using genomic in situ hybridizat...

2013
David Comont Ana Winters Leonardo D Gomez Simon J McQueen-Mason Dylan Gwynn-Jones

Few studies to date have considered the responses of agriculturally important forage grasses to UV-B radiation. Yet grasses such as Lolium perenne have a wide current distribution, representing exposure to a significant variation in ambient UV-B. The current study investigated the responses of L. perenne (cv. AberDart) to a simulated latitudinal gradient of UV-B exposure, representing biologica...

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