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white clover 【植物;植物學】白車軸草,白三葉〔一種飼料草〕。

white coal

Many legume plants may produce the beneficial isoflavones , which are vital to the formation of nitrogen - fixing root - nodules and the disease resistance response of plants . white clover ( trifolium repens ) , a high quality legume forage , however , has little isoflavones . to improve the isoflavone contents of such forage , an available strategy is to introduce gene ( s ) encoding the key enzyme ( s ) in the biosynthesis pathway of insoflavones 許多豆科植物中都含有異黃酮類化合物,異黃酮對植物根瘤的形成和植物的防御反應至關重要,但是在牧草白三葉中缺乏這種有益的化合物,因此通過轉基因實驗將異黃酮合成酶基因導入白三葉中,提高其異黃酮的含量,增加白三葉的營養價值。

Agobacterium tumefaciens strain a311 carrying the plant tranfer vector pb1121 , which contains the neomycin phosphotransferasell gene ( nptll ) and p - glucuronidase reporter gene ( gus ) both under the control of the camv 35s promoter , was used in the establishment of the genetic tranformation of white clover 選用苗齡4 5天的帶柄子葉作為外植體,先將外植體預培2天,再與根癌農桿菌a311共培養3 4天后,轉入附加有40mg l ~ ( - 1 )卡那霉素和400mg

As part of the project to improve isoflavone contents of legume forage by introducing isoflavone synthase ( ips ) gene , in this work , we have established the agrobacterium - mediated transformation system of white clover A311帶有pbi121質粒,該質粒攜有gus基因,其啟動子為35s啟動子,篩選標記基因為npt 。

5 % . so the established transformation system of white clover can be implied to transfer the ips gene 確立的白三葉遺傳體系就可以運用到下一步轉ifs基因的實驗中。

White clover meal for feedstuffs 飼料用白三葉草粉

The land is laid down with red or white clover 這塊土地種上了紅花和白花苜蓿。