A FEW years ago I was rather alarmed at reading that there was a proposal to introduce fish DNA into tomatoes in order to extend their shelf life.

As a vegetarian (no fish, flesh or fowl in my diet whatsoever) I am growing increasingly concerned, together with people who don't share my vegetarian views, that our food is being genetically altered by crossing species, and we are not advised of it on the packaging.

As David Stubley writes (Letters, February 12) "to take DNA from fish and force it into maize plants ... is truly absurd". In my case it creates a moral dilemma as I would find myself possibly, unknowingly, eating things which I would not. Gradually, I would go from no maize and tomatoes in my diet to goodness knows what else I could not eat.

The Vegetarian Society is very good at vetting foods which are suitable for its members but if food labelling is to be allowed to omit infcormation alerting us to the presence of fish - or any animal - DNA in fruit and vegetables principally, but also in other foodstuffs, then there is huge concern and people should be made aware of it.

If this practice is to increase then maybe there will come a time when I will become malnourished or, as a last-case scenario, have to starve to death. David Stubley wishes "to know the result of the largest experiment in history ... before it is forced upon us". I heartily agree. We must not be left in ignorance. We are entitled to informed choice.

For me, it is imperative that there is nothing "fishy" about my food.

Thelma Edwards,

Hume,

Kelso.