IMPLICATIONS OF POLYEMBRYONY ON THE GROWTH PERFORMANCE IN MANGO CULTIVARS
In mango, unlike monoembryonic types, variability in the polyembryonic cultivars is much less. There is a need to create variability by producing new recombinants, which while retaining the polyembryonic nature should have other desirable characters, either for use as rootstocks or as commercial types. Studies on polyembryony and its implication on germination, survival and growth performance of seedlings were studied in 7 open pollinated cultivars of mango. Germination percentage was highest in Bappakai (75.85%) closely followed by Vellaikulumban (73.8%) and Kurukkan (73.7%). Germination was lowest in Peach (35%). Percent polyembryony was highest in Olour (84.38%) followed by Moreh (75.53%). Maximum number of seedling/stone was recorded in Moreh and Nekkare. Days taken for completion of germination was early in Peach and Nekkare, while Bappakkai and Vellaikulumban took more days to complete germination (136 days). Percentage of single seedlings produced was highest in Peach (85.52%) followed by Nekkare (73.28%). The occurrence of double seedlings was highest in Olour (43.75%) and Bappakai (40.76%). The single and double seedlings performed better with respect to growth parameters and vigor than those producing more than two seedlings/stone. The origin of these seedlings either zygotic or nucellar is being addressed using microsatellite markers, which can be useful for breeding and clonal propagation for rootstock purpose.
Sane, A., Dinesh, M.R., Ravishankar, K.V., Ravishankar , H. and Vasugi, C. (2015). IMPLICATIONS OF POLYEMBRYONY ON THE GROWTH PERFORMANCE IN MANGO CULTIVARS. Acta Hortic. 1066, 47-54
nucellar, zygotic seedling, multiple seedling, microsatellite markers, Mangifera indica