“Citrus is competitive,” says citrus breeder and geneticist Fred Gmitter, explaining how global researchers race to develop, say, mandarin oranges that are sweeter, seedless, and easier to peel.

There are more than 10 different varieties of mandarin oranges. Some have been crossed with other citrus fruits, such as the pomelo and tangerine, each with their own unique flavour profile and ...

Mandarin, a vital cash crop grown in 16 dzongkhags, faces challenges such as trees dying due to pests, climate warming prompting a retreat to higher altitudes, and diseases like citrus greening wiping ...