鸢尾属植物种子休眠研究进展

鸢尾属(Iris L.)花卉具有较高的观赏性,极具开发利用价值,且主要以种子繁殖后代;但多数种子具有休眠特性,给育种工作带来了困难。其休眠原因包括种皮机械阻碍和种子中萌发抑制物存在等内外多重因素,单一或交互作用影响种子萌发。种子休眠解除的方法主要有环境条件处理、机械处理、化学试剂或激素处理等。本文对鸢尾属植物种子休眠原因、休眠解除方法及其机理等作了系统概述,旨在为鸢尾属花卉资源的合理开发利用及种质创新提供理论依据。

Review on Seed Dormancy in Iris

With high ornamental importance, the genus Iris is of great exploitation value. Iris mainly propagates by seeds; however, the seeds of most species exhibit dormancy characteristics, which makes them difficult to breed. Many causes account for this dormancy, including mechanical obstruction of the seed coat and the presence of germination inhibitors in the seed, thus affecting seed germination singly or interactively. Seed dormancy release methods typically include environmental, mechanical, chemical or hormone treatment. Here, we systematically review seed dormancy and its methods and mechanisms in Iris to provide a theoretical basis for the rational utilization and germplasm innovation of this genus.