【摘要】 杂种优势是普遍存在于生物界的一种自然现象,利用杂种优势来提高植物的产量、抗性等,是农林业中经常使用的有效途径。杂种优势现象已被广泛使用,但其产生机理仍未被完全解释清楚。本文对杂种优势的产生机理、预测方法、在重要林木树种中的利用情况等进行综述,以期能够为今后进一步深入研究杂种优势提供理论依据。更多还原

【Abstract】 Heterosis is a common natural phenomenon in biology. Using heterosis to improve plant yield and resistance is often used in the breeding and genetic improvement of agricultural and forest tree species. However,although this phenomenon has been widely used, its mechanisms have not been fully explained. In this paper, the generation mechanisms, prediction methods and utilization of heterosis in the breeding of important tree species are reviewed in order to provide a theoretical basis for further research on heterosis in the future.更多还原