Homosporous ferns produce sporophytes by intra gametophytic selfing, inter gametophytic mating, or apogamy.Gametangium ontogeny, genetic load, and ploidy affect the mating system of each species.
摘要型孢蕨类的孢体可配体、配体配两类配育系统或以无配生殖的方式产生,配体配又可分为配体和配体两种方式。
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The need to establish new supply chains means that transport and logistics are another area where intra-Asian investment will probably increase, notes Sabita Prakash of adm Capital, a private-credit firm.
私人信贷公司 adm Capital 的萨比塔·普拉卡什 (Sabita Prakash) 指出,建立新供应链的需要意味着运输和物流是亚洲内部投资可能增加的另一个领域。