نتایج جستجو برای: common yarrow
تعداد نتایج: 682509 فیلتر نتایج به سال:
Red wood ants (RWA) of the Formica rufa group are ecosystem engineers and important species in boreal temperate forests. However, permanent temporal loss forest habitats is a serious threat to their existence likely increase with climate change. Due current losing species, quick actions needed. Reported here biogeography, relative abundance habitat preferences five RWA Finland based on citizen ...
encouraging natural enemies by growing attractive plants is considered an effective method of pest control in organic farming. however, it is important to identify which flowers best attract beneficial insects. in this study, relative attractiveness of 16 species of flowering plants to adult hoverflies was assessed by conducting timed observations of feeding-visit frequencies. the experiments w...
Encouraging natural enemies by growing attractive plants is considered an effective method of pest control in organic farming. However, it is important to identify which flowers best attract beneficial insects. In this study, relative attractiveness of 16 species of flowering plants to adult hoverflies was assessed by conducting timed observations of feeding-visit frequencies. The experiments w...
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چکیده در این مطالعه تنوع ژنتیکی جمعیت های بومادران ایرانی از لحاظ مورفولوژیک، اسانس و مولکولی مورد ارزیابی قرار گرفت. ابتدا خصوصیات مورفولوژیک 38 ژنوتیپ بومادران از شش گونه (a. millefolium، a .filipendulina ، a. tenuifolia ،, a. santolinabiebersteinii a.و a. pachycephala) بررسی شد. نتایج تجزیه واریانس تنوع بسیار معنی داری (p < 0.01) بین ژنوتیپ های مورد مطالعه برای صفات رویشی و زایشی نشان داد....
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