~ 777 ~ Journal of Pharmacognosy and Phytochemistry 2019; 8(2): 777-780 E-ISSN: 2278-4136 P-ISSN: 2349-8234 JPP 2019; 8(2): 777-780 Received: 10-01-2019 Accepted: 12-02-2019 K Imtiaz Ahmed Department of Genetics and Plant Breeding, College of Agriculture Dharwad, Karnataka, India Sanjay B Patil Principal Scientist, Department of Genetics & Plant Breeding, ARS Sankeshwar, Karnataka, India Correspondence K Imtiaz Ahmed Department of Genetics and Plant Breeding, College of Agriculture Dharwad, Karnataka, India Studies on genetic variability parameters for yield and its component traits in advance hybrid clones of sugarcane K Imtiaz Ahmed and Sanjay B Patil Abstract The present investigation was undertaken to estimate the genetic parameters on 14 quantitative traits of 35 clones selected from clonal-I population derived from a cross Co 7204 x Co Pant 97222 and 7 commercial sugarcane genotypes. Analysis of variance showed significant differences among the clones for all the characters studied, indicating the presence of a considerable amount of variability in the genetic material. The transgressive segregants viz., SNK13101 and SNK13142 exhibited significantly superior cane and sugar yield over both the parents, with better potential compared to Co86032. These clones could be advanced for detailed yield trails for potential identification as parents and/or commercial clones in future. The estimates of GCV, PCV, heritability (broad sense) and genetic advance as percent of mean were recorded high for cane yield, commercial cane sugar yield, number of millable cane, brix yield and green top yield indicating that simple selection would be helpful for the improvement of these traits as these are governed by additive gene action whereas cane height recorded moderate heritability along with genetic advance suggesting that characters are governed by both additive and non-additive gene action. Keywords: Genetic advance, heritability, variability, GCV, PCV, sugarcane Introduction Sugarcane is an economically important perennial, tall monocotyledon that belongs to the Andropogonae tribe of the grass family (Poaceae, subfamily Panicoide), class Monocotyledons and order Glumaceae. In general, the modern cultivated sugarcane varieties (Saccharum spp.) are derived from artificial interspecific hybridization between S. Officinarum (2n = 80 chromosomes) and S. spontaneum (2n = 40–128) and also from back crosses involving the three major species namely Saccharum officinarum L., Saccharun spontaneum L. and Saccharum sinensis L. India is the original home of Saccharum species. New Guinea is the centre of origin of S. officinarum. Globally sugarcane is cultivated in an area of 25.97 million hectares producing 1.84 billion tons with the productivity of 70.85 t ha -1 (http://www.fao.org/faostat; 2017). India is next only to Brazil with respect to cane area and sugar production. In India, it is cultivated in an area of 4668.7 thousand hectares with the production of 337694.5 thousand tonnes with average productivity of 72.34 tonnes per hectare (https://www.indiaagristat.com; 2017-18). The major constraints in sugarcane production are low yield, lack of availability stable performing clones over different agro-ecological regions, abiotic stresses like drought, soil salinity and biotic stresses like diseases and pests. In this context, there is a huge demand for the development of sugarcane varieties with high tonnage and concentration of sucrose percent. Hence understanding the various genetic parameters is a basic step for improvement of any crop. Estimation of genetic variability in conjunction with heritability and genetic advance gives an idea of the possible improvement of the character through selection. Therefore, the present study was undertaken to assess genetic parameters for quantitative traits in sugarcane hybrid clones of a cross involving tropical Co7204 and subtropical Co Pant 97222 Materials and Methods The trail was conducted at S. Nijalingappa Sugar Institute, Zadshapur farm during 2017-18. The experimental material for the present investigation consisted of 35 clones selected form clonal-I population derived from a cross Co 7204 x Co Pant 97222 and 7 commercial sugarcane genotypes. The experiment was laid out in RBD with two replications and all the recommended package of practices for cultivation of sugarcane crop was followed. Three sample caanes were drawn at random from each replication and data were recorded for characters viz., number of millable canes at 300 (DAP) days after planting (NMC), Single cane