KAMBLE, ARUNKUMAR K.JHOLGIKER, PRAVEEN.AWATI, MALLIKARJUN G.REDDI, SANJEEVRADDI G.NANJAPPANAVAR, ANAND G.CHITTAPUR, REKHA B.K. V. LAKSHMI2024-05-212024-05-212021-12UHS19PGM1190https://krishikosh.egranth.ac.in/handle/1/5810209318An experiment was carried out to standardize the grafting time and propagation environment in Annona cultivars viz., Arka Sahan, Island Gem and Balanagar during 2020-21 at fruit nursery, MHREC, University of Horticultural Sciences, Bagalkot. The experiments were laid out in two factorial completely randomised design with twenty one treatments replicated for two times to standardize the grafting time, and nine treatments replicated for three times to standardize the propagation environment. Among the seven different times of grafting considered viz., December 15th , January 1st, January 15th, February 1st, February 15th, March 1st and March 15th for the standardization of grafting time in different Annona cultivars, Arka Sahan grafted on 15th of February took minimum days for first sprouting (9.25 days) and produced maximum number of sprouts per graft (3.60), girth of graft union (11.75 mm), number of leaves per graft (28.82), length of sprouted shoot (30.90 cm), girth of sprouted shoot (4.45 mm), leaf area per graft (1157.84 cm2 ), chlorophyll content (57.85 SCMR Value), graft success (95.00 %), graft survivability (97.50 %), length of longest root (41.06 cm), fresh weight of shoot and root (22.60 and 12.13 g, respectively) and dry weight of shoot and root (12.11 and 6.99 g, respectively). However, the fresh shoot:root ratio (2.31) and dry shoot:root ratio (2.21) were recorded maximum in Island Gem grafted on 15th of March, while the maximum stomatal conductance was noticed in Arka Sahan grafted on 15th of December (367.48 mmol m-1 s -1 ). Whereas, among the three different propagation environmental conditions considered viz., mist house, shade house and open field condition for the standardization of propagation environment in Annona cultivars, Arka Sahan grafts placed under mist house condition took minimum days for first sprouting (8.53 days) and produced the maximum number of sprouts per graft (3.83), girth of graft union (11.86 mm), length of sprouted shoot (29.50 cm), girth of sprouted shoot (4.34 mm), internodal length in sprouted shoot (3.13 cm) and number of leaves per graft (28.00), leaf area per graft (1134.52 cm2 ), graft success (97.77 %), graft survivability (92.55 %), length of longest root (42.78 cm), fresh weight of shoot and root (21.66 and 11.66 g, respectively) and dry weight of shoot and root (11.84 and 6.16 g, respectively). However, higher chlorophyll content (61.66 SCMR Values) and stomatal conductance (350.66 mmol m2 s -1 ) was recorded in Arka Sahan grafts maintained under open condition, maximum fresh shoot:root ratio (2.40) in Island Gem maintained under open field condition and dry shoot:root ratio (2.35) in Balanagar maintained under open field condition.EnglishThesis