root n. 鲁特〔姓氏〕。 n. 1.(草木、毛发等的)根;根菜,食用菜根;根茎,地下茎;块根;有根植物,草木,草;〔pl.〕根菜类;(山)麓。 2.根本,根源,原因;本质;基础,根柢;【语言学】词根;根词;【数学】根数,根。 3.祖先;【圣经】子孙。 4.【音乐】和弦基音。 the root of a tooth 牙根。 the root of all evil 祸根。 the root of a gem 玉根〔毛玉的非玉部分〕。 a cubic [second, square] root 立方[平方]根。 at (the) root 根本上。 be at the root of 是…的根本[基础]。 by the root(s) 连根,从根部,从根源 (pull up by the roots 连根拔除,根除)。 get at [go to] the root of 追究…的根底,追查…的真相。 lay the axe to the root of 根本改革;治本。 root and branch 完全,都;彻底地,急进地。 strike at the root of 打击…的根部,彻底摧毁。 strike [take] root 生根;扎根;固定,固着。 to the root(s) 充分地;竭力地;彻底地。 vi.,vt. (使)生根;(使)固定;(使)固着;〔比喻〕深深种下,使根深蒂固。 Terror rooted him to the spot. 吓得他呆立不动。 root up [out] 连根拔除(杂草等);肃清(反叛等)。 adj. 根的;根本的。 a root idea 根本思想。 vt.,vi. (猪等)用鼻子掘(地);搜寻 (for)。 R-, hog, or die. 〔美国〕拚命干啊,不然就得饿死。 vi. 〔美俚〕应援,声援;支持,赞助;欢呼,喝彩。
The transformed hairy roots were detected for agropine to make sure the transformation was successful . a conclusion was reached as follows : agrobacterium rhizogenes r1601 was an ideal strain for hairy roots transformation from trichosanthes bracteata voigt which exhibited extraordinary transformation rate ( 60 % ) . od600 = 0 . 7 was the optimum infection concentration for the tested transforming agent , with temperature at 25 , ph at 6 . 0 , 20min of infection and 48h of co - culture and phytohormone at 1 . 0mg / l being the most favourable hairy root - inducting pattern 通过实验和对结果的数据分析,得出下面的结论:发根农杆菌r1601是较好的大苞栝楼发根的诱导菌株,它对预培养24h的大苞栝楼子叶外植体具有最好的转化效率和发根诱导率( 60 ) ,最适的菌株感染浓度od _ ( 600 )为0 . 7 ,温度27 、 ph值为6 . 0 、 20min的感染时间和48h的共培养,以及黑暗条件和1 . 0mg / l的激素最有利于发根诱导的环境条件。