Rose Breeding

In continuation to the previous work on development of new hybrids for improvement in essential oil and recurrent flowering, 4541 direct and reciprocal crosses were made in R. damascena var Jwala and Himroz and R. bourboniana. Crosses were also attempted in R. centifolia, R. rubiginosa and R. moschata (Nepal). The details of the crosses during 2006-07 are presented (Table 3.1) and some promising hybrids are shown

Wild Roses

Back crossing Rootstocks

In continuation to previous work on compatibility studies for development of new types of roses, conventional breeding was attempted in wild roses with other species. Combination of eight crosses made in better compatible parents of different wild strains with R. damascena var Jwala and Himroz presented  Most of the interspecific hybrids of R. damascena var Jwala and Himroz and R. bourboniana produced single or semi double flowers during last year. In order to improve the number of petals, oil content and other desirable characters in the inter specific hybrids, 473 backcrosses were made in the promising F hybrids and 1 selected open pollinated plants. The resultant hips har v e s t ed and s e eds obtained are presented (Table 3.3). Al l the harvested seeds were stratified for further development of plants and evaluation of hybrids. Interspecific hybridizations were made in the promising wild strains of different species of roses collected and domesticated at IHBT. F hybrids were obtained for new and desirable rootstocks and stem cuttings of 44 1 hybrids were planted for further evaluation and selection.