Plum marbling
What is it and what can be done about it? By Anna Mouton. What is plum marbling? Plum marbling is an infectious disease of Japanese plums caused by plum viroid I. Viroids are small circular strands of RNA — short…
The roots of South African plant improvement
Horticultural icons Profs Daan Strydom and Gerard Jacobs reflect on the origins of plant improvement and share some of the lessons learnt. By Anna Mouton. “We initiated plant improvement — virus-free and true-to-type material — with industry in the early…