adventive 是什么意思

	adj. 非本土的，外来的，引进的。 n. (动植物的)非本地生物，引进品种。

not native and not fully established; locally or temporarily naturalized; "an adventive weed"

	1.	The process itself is referred to as adventive embryogenesis . 其过程本身称为不定胚胎发生。
	2.	A sharp demarcation of adventive embryos from zygotic embryos cannot be drawn . 不定胚与合子胚之间不能划分出明显的界限。
	3.	The first demonstration of the formation of adventive embryos from carrot tissue explants can be traced to the work of reinert . 由胡罗卜组织外植体来的可定胚形成的最初证实可追溯到Reinert的工作。
	4.	For long-term tissue cultures of domestic carrot the only requirement for adventive embryogeny was addition of an auxin . 栽培的胡罗卜进行长期组织培养时，对不定胚发生的唯一要求是加进植物生长素。
	5.	Parasitic adventive crater 寄生火口
	6.	The first demonstration of the formation of adventive embryos from carrot tissue explants can be traced to the work of reinert 由胡罗卜组织外植体来的可定胚形成的最初证实可追溯到reinert的工作。

adventive是什么意思