Imagine a future where Rose Crown Gall Disease is a worry of the past.

Intrinsa breeding with Rose – Your best defense against Crown Gall Disease comes from the plant power within.

 

The pain

 

Crown gall disease in rose is caused by several species in the bacterial genus Agrobacterium*. These bacteria can easily enter via natural or artificial wounds made by infected tools and can cause crown galls (tumor-like-growth) on the stems, roots, and crown of the plants. Once the bacteria enter a plant, they can introduce a piece of their DNA into the plant cells which causes the cells to proliferate uncontrollably, leading to gall formation. The galls not only depreciate the aesthetic value of the plants but also impairs plant growth by disrupting plant’s vascular system, impeding the water and nutrients transport. The infected roses may show stunted growth, reduced productivity and poor health and the leaves may turn yellow chlorotic, wilt, and fall off prematurely. Once Agrobacterium infects a rose plant, it is incredibly difficult to eradicate as bacteria may survive in the soil for years, making re-infection a constant threat.

 

 

The gain

 

Bactericides are used as a part of management strategy for crown gall in roses, though their effectiveness is limited. Therefore natural resistance is required. Intrinsa® from Dümmen Orange brings varieties to the market using the science of advanced breeding where the desired approach for developing improved performance on high disease resistance is identified. As a result of this breeding approach, the Intrinsa® collection of rose now also offers you varieties with a natural defense against crown gall disease in rose from the plant power within. In trials under high infection levels our high resistant varieties show very few galls and will, compared to susceptible varieties, maintain a high productivity in the presence of Agrobacterium.

 

*plants tested with Agrobacterium tumefaciens and Agrobacterium rubi.