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。
Analysis of endogenous enzymes activity in mutant of populus tomentosaand its relative species during root formation 芽变毛白杨及其亲缘种扦插生根相关内源酶活性特征分析
Ph value increase from 4 . 5 to 6 . 5 strongly stimulated hairy root formation and higher ph value ( above 7 . 5 ) inhibited it . under the optimized condition , the transformation frequency of torenia approached 90 % 预培养和共培养培养基ph从4 . 5提高到6 . 5时,毛状根诱导率显著提高,但是当提高到7 . 5时,诱根率却显著下降。
In this study , the screening and identification of the different agrobacterium rhizogenes strains were carried out using physiological , chemical , molecular and bioassay methods , and the vigor of different strains was also compared based on their characters ; the transformation of torenia mediated by agrobacterium rhizogenes , the hairy root formation and its regeneration were importantly studied 本实验研究了( 1 )发根农杆菌的生理生化、分子生物学鉴定及生物检测和活力比较; ( 2 )发根农杆菌介导的蓝猪耳遗传转化和蓝猪耳毛状根的植株再生,为蓝猪耳的遗传转化和其它分子生物学研究奠定基础。