Rapid propagation systems for commercialization of novel dayliliy germplasm

黄花菜是北美主要作为观赏植物种植的一类多才多艺的植物，在花朵大小、颜色和其他特征上具有极大的多样性。尽管有很大程度的多样性，但很少有商业上可用的品种，也不一定是根据它们对加拿大生长条件的适应性，甚至是它们的花卉特征来选择的。为大众市场开发新品种的一个主要瓶颈是许多有前途的品种的植物繁殖速度慢。例如，虽然有些品种繁殖速度很快，每个季节的倍增率为25：1，但另一些品种每年可能只产生一个新枝。因此，繁殖速度限制了一些理想品种的商业可行性，通常需要10-20年的时间才能从爱好者市场走向商业规模。该项目的目标是测试各种繁殖策略，以提高黄花菜的繁殖率，以克服这一瓶颈，从而缩短上市时间，并使一些使用传统方法繁殖缓慢的优良品系能够进行商业化生产。这些策略将包括根/叶插条，应用生长调节剂诱导多个芽，诱导花茎增殖，以及应用先进的细胞培养技术。因此，安大略省的黄花菜育种者/种植者将能够更快、更便宜地推出适应安大略省生长条件的优质品种，最终增加消费者的选择。

Daylilies are a versatile group of plants grown primarily as ornamentals in North America with great diversity in flower size, colour, and other characteristics. Despite the large degree of diversity available, few cultivars are commercially available and are not necessarily selected based on their suitability to Canadian growing conditions or even their floral characteristics. A major bottle neck in developing new cultivars for the mass market is the slow rate of plant multiplication of many promising cultivars. For example, while some cultivars reproduce quickly with a multiplication rate of 25:1 per season, others may only produce one new shoot per year. As a result, propagation rate limits the commercial feasibility of some desirable cultivars and it generally takes 10-20 years to move from the enthusiast market to commercial scale. The objective of this project is to test a variety of propagation strategies to increase the multiplication rate of daylilies to overcome this bottleneck, thereby reducing the time to market and enabling commercial production of some elite lines that multiply slowly using conventional means. These strategies will include root/leaf cuttings, application of growth regulators to induce multiple shoots, induction of proliferations on flower stocks, and the application of advanced cell culture techniques. As a result, Ontario daylily breeders/grower will be able to bring superior cultivars adapted to Ontario growing conditions quicker and cheaper, ultimately increasing consumer selection.