~ 3035 ~ Journal of Pharmacognosy and Phytochemistry 2020; 9(5): 3035-3038 E-ISSN: 2278-4136 P-ISSN: 2349-8234 www.phytojournal.com JPP 2020; 9(5): 3035-3038 Received: 18-07-2020 Accepted: 23-08-2020 Ravi Kumar Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand, India Pratibha Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand, India Ankit Dongariyal Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand, India Tribhuwan Pratap Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand, India Shubham Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand, India Raj Kiran Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand, India Corresponding Author: Ravi Kumar Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand, India Performance of inarching in jackfruit ( Artocarpus heterophyllus L.) performed during different months under the Tarai region of Uttarakhand Ravi Kumar, Pratibha, Ankit Dongariyal, Tribhuwan Pratap, Shubham and Raj Kiran Abstract The jackfruit is an emerging crop of India due to its various uses as fruits, vegetable medicinal, timber and wood. The present study was carried out in 2018- 19 to find the most appropriate time of inarching in jackfruit. The experiment ware laid out in one factorial randomized block design and was replicated four times. The experiment was consisted of 12 dates of inarching from February 2018- January 2019. The results obtained from the experiment revealed that the inarching performed in the month of July recorded the highest survival percentage (93.80%), length (8.55 cm) and diameter (5.80 mm) of new growth, number of primary branches (3.47), number of leaves (9.37), length of primary roots (32.84 cm) and dry root: shoot ratio (0.70) at 90 DAG, However, the maximum length of tap root (15.85 cm) and fresh root: shoot ratio were noted during the November (0.72) inarched plant. From the present finding, it can be concluded that under Tarai conditions of Uttarakhand inarching performed during July is the most suitable time for quality production of jackfruit plants of cv. Pant Garima. Keywords: Jackfruit, vegetative propagation, inarching, rootstock, scion Introduction Jackfruit (Artocarpus heterophyllus L.) is a native fruit crop of India. It is widely cultivated throughout the tropical and sub-tropical countries including Bangladesh, India, Myanmar, Thailand, Sri Lanka and etc. In India, it is very popular in the states like Kerala, Tamil Nadu, Karnataka, Goa, Uttar Pradesh, Bihar, West Bengal and etc. Jackfruit tree thrives well in hot humid climate and can tolerate low temperature to some extend but is sensitive to chilling, cold and frost. It is also one of the most suitable fruit crop for dryland horticulture. It is an evergreen monoecious crop producing latex, growing up to a 20- 30 m in height and easily recognized by its fruit, the largest fruit among the cultivated plants with a long tap root and a dense crown (Bose and Mitra, 1990) [1] . Being a staple food, it is very popular among the poorer classes and Indian house for culinary preparations and so it is also known as the 'Poor Man's food' in the eastern and southern parts of India (Archana et al., 2018). It is quite important both for use as a fruit and vegetable. Jackfruit is most commonly propagated through seeds. Due to its highly cross-pollinated nature, immense variation is observed among populations with respect to yield, size, shape, flesh colour, quality of fruit and maturity period. Commercial cultivation of jackfruit is still at a primitive stage in India, primarily because of the difficulties in producing elite planting materials. Hence, vegetative propagation become essential in order to get true to type plants (Bose and Mitra, 1990) [1] . The significance of vegetative propagation over sexual propagation in the maintenance of genetic uniformity and preservation of identity of an elite clone or cultivar is well recognized in horticultural crops, Jackfruit is still considered very difficult species to propagate through vegetative means, possibly due to the presence of its milky latex, which creates problem in the normal process of callus formation and ultimately the formation of graft union (Soepadmo 1991) [18] . Therefore, there is an immense need to find out a suitable method of vegetative propagation, for rapid and large-scale multiplication of jackfruit plants. Hence, keeping the above points into consideration, the present study was undertaken to find out the most appropriate time of inarching technique for quality production of jackfruit plants in short span of time in jack fruit. Materials and Methods The present study was carried out during February, 2018 to January, 2019 at Horticulture Research Centre Patharchatta, G.B.P.U.A.T., Pantnagar, (Uttarakhand). The treatment consisted of 12 dates of grafting i.e. T1 (15 th February’18), T2 (15 th March’18), T3 (15 th