نتایج جستجو برای: dicotyledons
تعداد نتایج: 264 فیلتر نتایج به سال:
Because sieve elements are generally regarded as the specialized conducting cells in the phloem tissue, their structure in relation to function has been the subject of many studies and discussions. ' Both the protoplast and the walls of sieve elements have distinctive characteristics, some of which are difficult to relate to the rapid flow of materials-at the rate of up to 100 cm. per hour-reco...
Embryogenesis represents the critical stage in the development of a plant at which its basic organization and body plan have their inception. Therefore, in the effort to understand the regulation of plant development, molecular geneticists have recently focused considerable attention on the search for genes expressed during the embryogenesis of plant model systems (Mayer et al., 1991 ; Meinke, ...
This paper examines the traditional use of medicinal plants in Northern Peru and Southern Ecuador, with special focus on the Departments of Piura, Lambayeque, La Libertad, Cajamarca, and San Martin, and in Loja province, with special focus on the development since the early colonial period. Northern Peru represents the locus of the old Central Andean "Health Axis." The roots of traditional heal...
Nowadays plant endophytic bacteria have found diverse and useful applications in biotechnology; therefore, much attention has been paid to the isolation, identification, and evaluation of these microorganisms. Since the sterilizing plant tissue surfaces from epiphytic bacteria is difficulty, the efficacy of three different screening methods for endophytic bacteria including 1- HClO sterilizatio...
طالبی با نام علمیcucumis melo l.)) یکی از محصولات با ارزش در اکثر کشورهای جهان می باشد. طالبی ها، گیاهان باغی دگرگشن با اهمیت اقتصادی فراوان اند که کشت آن ها در نقاط مختلف کشور متداول است. این سبزی به دلیل وجود قند، ویتامین ها ، موادمعدنی و آنتی اکسیدان ها به یک ماده سودمندی در برنامه تغذیه ای تبدیل شده است. در طالبی به دلیل وجود ویژگی های هتروزیگوستی بالا و محدودیت در روش های به نژادی متداول، ...
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