I want to know the answer to the following question:
When was DNA sequencing first used for grouping plants?
All the background I'm provided with is that "From the 1990s onwards, the predominant approach to constructing phylogenies for living plants has been molecular phylogenetics, which uses molecular characters, particularly DNA sequences, rather than morphological characters like the presence or absence of spines and areoles.". Is that enough to answer the question?
Answer: yes