茶树分子标记辅助育种研究进展

Advances in Molecular Marker Assisted Breeding of Camellia sinensis

茶树是多年生异花授粉作物,育种效率低。分子标记辅助选择技术可以显著提高育种效率,已成为作物遗传育种领域的研究重点。发掘与目标性状紧密连锁的功能性分子标记是开展分子标记辅助选择育种的前提,目前主要依靠QTL作图与关联作图两种方法。简述了QTL作图和关联作图在茶树分子标记辅助育种研究中的进展及存在的问题,并对其发展趋势进行了展望。

Tea is a perennial that propagates by cross-pollination and is inefficient for breeding new varieties.To facilitate the process,molecular marker assisted selection has been extensively studied to identify the functional markers associated with target traits.The task currently relies largely on the application of QTL and association mapping.This article reviews and summarizes the progress on,challenges facing,and future prospect of these methodologies,especially in respect to the breeding of tea cultivars.