Wild species of Rice offer an important source of variability for improvement of cultivated Rice.Wide hybridization is the only way to transfer useful genes from wild species into cultivated Rice.In order to utilize the resistant potential of Oryza rufipogon to various biotic and abiotic stresses, this species was crossed with cultivated varieties of Oryza sativa. The crossability between O. sativa and O. rufipogon varied from 17.5-33 (%). The highest crossability was observed in IR-6/O. rufipogon (33%) and least in KS-282/O. rufipogon (17.5%). Based on crossability, IR-6 showed a close...

The genus Mentha includes perennial herbs, generally cultivated for their essential oils used for medicinal and aromatic purposes. The number of species in the genus Mentha has been a matter of confusion due to high polymorphism in morphology and great diversity in essential oil composition. Previously the Mentha collections have been classified on morphological traits in Pakistan. This thesis is the first documented report of using molecular as well as numerical techniques for dissecting Mentha specimens collected from Kunhar River catchment of Hazara region. For numerical analysis twenty...