~ 801 ~ International Journal of Chemical Studies 2018; 6(3): 801-803 P-ISSN: 2349–8528 E-ISSN: 2321–4902 IJCS 2018; 6(3): 801-803 © 2018 IJCS Received: 15-03-2018 Accepted: 18-04-2018 Amrit Tamuly Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat, Assam, India Prabalee Sarmah Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat, Assam, India Joli Dutta Department of Plant Pathology, Assam Agricultural University, Jorhat, Assam, India Dibosh Bordoloi Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat, Assam, India Shyamal Kumar Phukon Department of Tea Husbandry and Technology, Assam Agricultural University, Jorhat, Assam, India Syed Wasifur Rahman Department of Biotechnology, Assam Agricultural University, Jorhat, Assam, India Palash Thengal Department of Nematology, Assam Agricultural University, Jorhat, Assam, India Milon Jyoti Konwar Department of Agronomy, Assam Agricultural University, Jorhat, Assam, India Correspondence Amrit Tamuly Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat, Assam, India Study on correlation and path coefficient analysis among inter-specific crosses of Solanum lycopersicum L. and Solanum pimpinellifolium Amrit Tamuly, Prabalee Sarmah, Joli Dutta, Dibosh Bordoloi, Shyamal Kumar Phukon, Syed Wasifur Rahman, Palash Thengal and Milon Jyoti Konwar Abstract The tomato Solanum species which includes the cultivated tomato Solanum lycopersicum L., and more than 10 related wild species, belongs to the family Solanaceae. Varieties under Solanum lycopersicum L. are poor in adaptability and other characteristics due to their narrow genetic base. Solanum pimpinellifolium, a closely related species of Solanum lycopersicum L., harbours a number of quality traits and yield attributes not present in our cultivated tomatoes. Parents for the inter-specific hybridization with S. pimpinellifolium carried out during Rabi 2014-15 comprised of six tomato varieties of S. lycopersicum. The parents as well as the inter-specific hybrids were evaluated for fruit quality and yield attributes in the field condition during Rabi 2015-16. All the varieties were cross compatible with Solanum pimpinellifolium. Yield per plant was positively correlated with fruit length and fruit breadth. Path analysis at genotypic level revealed that harvest duration followed by primary branches, fruit weight, and number of fruits per cluster exhibited maximum direct effect on fruit yield per plant Keywords: wild, inter-specific, hybridization, compatible, cluster Introduction Cultivated tomato Solanum lycopersicum L., (formerly Lycopersicon esculentum, Miller), belongs to the family Solanaceae. The tomato Solanum species (Solanum subsection Lycopersicon) include the cultivated tomato, and more than 10 related wild species. It has a diploid genome with 12 pairs of chromosomes and a genome size of 950 Mb (Michaelson et al., 1991). Varieties under the species lycopersicum are annual, typically day neutral and self pollinated. It contains abundant and well balanced nutrients consisting of vitamins (A,B,C), minerals, dietary fibres and lycopene (Toor et al., 2006) [15] . Peru Ecuador region is considered as the centre of origin of tomato (Rick, 1969. India stands second in the production of tomato with 168.3 lakh MT production in an area of 8.6 lakh ha and with a productivity of 19.5MT/ha (Anonymous, 2011) [1] . The productivity in India as compared to China is very low. In Assam, its production account for 3.87 lakh tonnes sharing 2.30% of India’s tomato production during 2010-11 (Anonymous, 2011) [1] . Species under the genus Solanum has both determinate and indeterminate growth. The wild species of tomato bear a wealth of genetic variability for morphological and biologically important characteristics. The wild species have been used for the improvement of simply inherited traits such as vertical disease resistance. The transfer of desirable genes from wild species into elite breeding lines should be associated with the elimination of undesirable exotic genes while maintaining and selecting for desirable characteristics. Solanum pimpinellifolium, a closely related species of Solanum lycopersicum L., harbours a number of quality traits and yield attributes not present in our cultivated tomatoes. In addition to resistance to various biotic (Foolad et al., 2002; Foolad, 2005 and 2006) [8, 4, 6] and abiotic stresses (Foolad, 2004 and 2005) [3, 4] . S. pimpinellifolium also harbours other desirable yield attributing traits like clustering property of the fruits, high number of fruits per plant and other desirable quality traits (Foolad, 2007) [5] which has the potential to contribute to the improvement of the cultivars when combined with large sized fruits with high total solids from other elite cultivars. Hybrids between tomato and its close relative S. pimpinellifolium have been reported to behave cytologically like intra-specific tomato hybrids, suggesting little chromosomal differentiation