Evaluation of polyembryonic mango rootstocks under nursery conditions.
Venkata Rao, Reddy Y. T. N.
Author Affiliation: Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore - 560 065, India.
Journal of Asian Horticulture 2 : 245-249
Abstract : A field experiment was conducted at Indian Institute of Horticultural Research, Bangalore during 2001-2002 to study the performance of polyembryonic rootstocks of mango under nursery conditions. The study showed significant differences among the varieties. Maximum seedling height (51.9 cm) and leaf area (48.20 cm2) was observed in monoembryonic variety Alphonso. Among polyembryonic varieties, Mylepelian and Bappakai recorded maximum height (35.7 cm) and leaf area (39.02 cm2) respectively. Vellaikolumban recorded more number of leaves (25.5) and Vigour index-I (9640.7 cm) where as Vigour index-II was more in variety Muvandan (1129.3 g). Germination per cent was maximum in variety Muvandan (121.38%). Extent of polyembryony was highest in varieties E.C-95862 (296%) and Starch (295%) respectively. Maximum fresh and dry weight of seedling was recorded in variety Nekkare (31.76 g and 12.11 g respectively). Vellaikolumban (19.65%) and Kitchner (60.32%) recorded highest bark and stem per cent respectively. There is a significant positive correlation among various growth parameters. Number of leaves correlated positively with plant height (0.68**), leaf area was positively correlated with plant height (0.73**) and number of leaves (0.72**). Vigour index-I correlated positively with plant height, number of leaves and leaf area. Bark per cent correlated positively with number of leaves and leaf area.