Honey is a widely known natural food. Bees gathered the nectar in flowers and take it back, then process and condense it into this translucence, sticky and thick sweet liquid. It's a tough job to gather nectar. A bee can only get 20mg nectar per time. To get 1kg nectar, the worker bee need to fly 500,000-600,000 times and to produce 1kg honey, a worker bee needs to gather the nectar from 1500-1600 flowers. If a bee gathers nectar just in a place one kilometer away from its comb, then it needs to fly 3 kilometers to fulfill a honey bursa. And to produce 1kg honey, it needs to fly 360,000-450,000 kilometers, which equals to fly around the earth for 8.5-11 circles. So it's not exaggerated to say each drop of honey is a crystal of hard working.

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The objective of present study aims to reveal the adaptive natuer of these metabolistes in nectar in biocoenosis context by analyzing the behavioral and physiological mechanisms of how bees cope with secondary compounds in nectar. The results are as following.

本文通過對取食含有次生代謝物質花蜜的蜜蜂的行為、生理和性別分化的研究，來探討花蜜中這些次生代謝物質在自然群落中的生態(tài)功能色噜噜午夜午伦视频一区二区，主要的研究結果如下： 1欧美成性互相、野壩子植物分泌的花蜜中含有酚類化合物，其相對澀性（多酚對植食性動物取食阻隔大小的參數(shù)）為0.1679±0.0467一级做性色a爰片久久毛片体验区。

Investigation of towel gourd Luffa cylindrical (L. Rome nectar secretion in greenhouse showed that it secreted nectar in 7:00~9:00 and reached the peak at 9:00, after that it secreted a little nectar.

通過對溫室絲瓜泌蜜規(guī)律的調查研究色色网五月，結果表明，在7：00~15：00之間絲瓜花泌蜜高峰期是上午7：00~9：00av体验区，9：00達到高峰值性爱不卡视频网站，之后基本上不再泌蜜。

Pray that NECTAR students will be better equipped through their learning to serve God.

請為 NECTAR 的學生能透過這些課程學習日韩一级毛一片欧美一级ww，使他們得到好的裝備來服事上帝国产精品JIZZJIZZ。

Basing on the nectary structure and polysaccharied changes, it was supposed that storing of per-nectar and decomposing of polysaccharide were conducted in nectariferous tissue. The epidermis was the main place where processing of per-nectar and synthesizing and secreting of nectar were conducted.

根據(jù)花外蜜腺的特點及多糖的變化分析，原蜜汁的貯存及多糖的降解主要在產蜜組織細胞中進行黄色片黄色的视频，而分泌表皮細胞則是原蜜汁的加工及蜜汁的合成與分泌的主要場所女性毛片A，且分泌細胞內含有濃厚的細胞質，有顯著的細胞核和大量的細胞器97超碰免费。

The honeybee's proventriculus filter the pollen out of nectar rapidly and effectively, therefore ratio of pollen is not always consistent with that of nectar in ripe honey.

因為蜜蜂的前胃能快速有效地過濾掉花蜜中的花粉A级黄色网站免费看，蜂蜜中花粉的比例并不總代表其中的花蜜比例。

Secondary pollinators are diurnal hawk moths and butterflies. Bombus briviceps and Bombus sp. are nectar gatherers. The mean nectar sugar concentration is 29.5%. The proport ion of seed is 86. 5%. Percentage seed germination under controlled conditions is 23.1 %. Distances that seeds are ejected ranged from 0.58-1.17 m. The distances that pollen spread is 29cm. Pollen viability is highest on the day of anthesis and thereafter decreased.

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The nectaries of Ensete glaucum had the highest starch content, and those of Musa basjoo and E. glaucum had fibrillar material presented in nectar ducts. Pollination syndromes among the three species showed high diversity, while inflorescence and flower characters (such as pendant or erect inflorescences, bract color, nectar volume and production over time, etc.) and pollination patterns were highly correlated.

PAS反應顯示象腿蕉泌蜜組織中淀粉粒含量高于其他兩個種；芭蕉和象腿蕉的蜜腺腔里有許多纖維狀物質存在99在线看精品。3種植物的傳粉綜合征多樣化新超碰免费男人网站，花序和花的特征(如花序下垂或直立、苞片的顏色一级AAA特黄AV片在观看、泌蜜量和泌蜜時間等)和傳粉樣式之間有密切關系成年人在线网站观看播放视频。

To be specific, between the peony and the rose plant squash and spinach, turnips and tomatoes; beauty is nectar and nectar, in a desert, saves - but the stomach craves stronger sustenance than the honied vine.

具體而言，在牡丹和玫瑰视频一区无码，南瓜和菠菜欧美熟女另类，蘿卜和番茄之中人人做,人人操,人人性爱；花蜜是美麗的，因為AAA看黄片，在沙漠中99re在线国产，花蜜比甘甜的藤蔓更能滿足胃的需要。

They found that most of the columbines' nectar spur length evolution happened during shifts in pollinators from bumblebees to hummingbirds, and from hummingbirds to hawkmoths. In between these shifts, evolution of the columbines' nectar spurs came to a halt.

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