Q1983Janaki Ammal used cytogenetics and hybridization to help breed sugarcane suited to Indian conditions, while advancing the study of chromosome numbers in cultivated plants.
India once relied heavily on imported sugar despite growing extensive cane, because many local plants had lower sugar content. At Coimbatore, Ammal studied wild and cultivated relatives and used their chromosome patterns to guide crosses adapted to the climate. Her later atlas with C. D. Darlington turned chromosome counts into a reference map for plant breeding around the world.



