PROPAGATION STUDIES OF JAMUN (Sygyzium cuminii Skeels) ON DIFFERENT ROOTSTOCKS

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Date
2019-10-22
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K.R.C COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
Propagation studies on different rootstocks of jamun (Syzygium cuminii Skeels) was carried out during 2018-19 at department of Fruit Science, Kittur Rani Channamma College of Horticulture, Arabhavi, University of Horticultural Science, Bagalkot. Among the different pre-sowing treatments AJG-85 seeds soaked in normal water for 24 hrs took minimum days for initiation of germination (11.15) with maximum germination (95.14%). The minimum days taken for 50 per cent germination was recorded in Konkan Bahadoli seeds treated with GA3 at 200 ppm for 10 minutes (13.13). AJG-85 seeds treated with GA3 at 200 ppm for 10 minutes recorded minimum days for maximum germination (17.72) and maximum seedling diameter (5.75 mm). The maximum plant height (35.56 cm) and seedling vigour index (3109.80) was recorded in Konkan Bahadoli seeds soaked in normal water for 24 hrs and lowest was recorded in untreated Local selection. Among all treatments water soaking of AJG-85 seeds for 24 hrs was best for maximum germination. Jamun variety AJG-85 grafted on its own rootstock during October recorded the maximum number of sprouts (3.92, 4.49 and 4.56 respectively), sprout length (7.91, 16.18 and 22.20 cm respectively), per cent graft success (79.39, 88.80 and 90.94% respectively) at 30, 60 and 90 DAG and also per cent graft survival (93.96 and 89.30% respectively) at 120 & 180 DAG and took minimum number of days for sprouting (19.15). The vegetative parameters like maximum number of leaves (14.28, 16.40 and 25.84 respectively), graft height (43.80, 48.92 and 51.80 cm respectively) and graft diameter (5.23, 6.03 and 7.27 mm respectively) was noticed in AJG-85 grafted on Konkan Bahadoli during October at 30, 60 & 90 DAG. Maximum root length was observed in AJG-85 grafted on Local selection rootstock (28.15 cm) during October. AJG-85 performed well, when it is grafted on its own rootstock in October month for maximum graft growth, graft success and graft survival.
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