نتایج جستجو برای: flower heads

تعداد نتایج: 36923  

Journal: :علوم گیاهان زراعی ایران 0
محمد رضا سبزعلیان قدرت الله سعیدی آقافخر میرلوحی

although wild safflower (c.oxyacantha, 2n=24) has not been studied to a very large extent, yet it is believed that it can be used as an important source of biotic and abiotic stress resistance genes for improvement of cultivated safflower (c.tinctorius l., 2n=2x=24). in this study, the crossability between these two (cultivated and wild safflower) species was evaluated as based upon morphology ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده کشاورزی 1390

abstract previous researches have shown success of growth hormones usage on flower production increase, pod and prevention of abscission of them in some of the pulses. two tests were done, in order to find out the effects of growth hormones to on flower production increase, pod and chick pea yield composites in farmer conditions (2010-11) and green house conditions as factorial on the proje...

Journal: :Land 2022

The installation of flower strips in simplified agricultural landscapes has been promoted as a tool to improve pollination services. While the effectiveness increasing pollinator visitation and yield is well-established, social economic feasibility this measure remains unclear. Here, we evaluated efficiency installing promote under different scenarios subsidy. A 2-year experiment was implemente...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده علوم پایه 1392

چکیده: اسانس اندام هوایی دو گیاه onosma orientale و capparis spinosa بصورت جدا از هم (گل، برگ، ساقه) با استفاده از دستگاه کلونجر به روش تقطیر با آب استخراج نموده و ترکیبات موجود در اسانس ها شناسایی و مقدار آنها تعیین شده است. ترکیبات اصلی موجود در این دو گیاه شامل موارد زیر است. onosma orientale %stem %leaf %flower compound name n - 14.8 59.15 n-decane 1 23.28 24.51 7.91 alpha-eudesmol 2 ...

Journal: :بوم شناسی کشاورزی 0
قربانعلی اسدی رضا قربانی سرور خرم دل

russian knapweed (acroptilon repens l.) is a perennial weed of aceraceae that is becoming a dominant weed in suitable conditions. in order to find an ecological non-chemical approach for controlling russian knapweed and studying the possibility of using flower-eater mite (aceria acroptiloni shevchenko & kacalev) (acari: eriophyidae), a series of studies including field survey and field experime...

Journal: :Annals of botany 2015
Margaret W Thairu Johanne Brunet

BACKGROUND AND AIMS Flower colour varies within and among populations of the Rocky Mountain columbine, Aquilegia coerulea, in conjunction with the abundance of its two major pollinators, hawkmoths and bumble-bees. This study seeks to understand whether the choice of flower colour by these major pollinators can help explain the variation in flower colour observed in A. coerulea populations. ME...

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