~ 6005 ~ The Pharma Innovation Journal 2022; 11(12): 6005-6008 ISSN (E): 2277-7695 ISSN (P): 2349-8242 NAAS Rating: 5.23 TPI 2022; 11(12): 6005-6008 © 2022 TPI www.thepharmajournal.com Received: 01-10-2022 Accepted: 05-11-2022 Syeda Nabeela Thasneem M.Sc. Scholar, Department of Vegetable Science, SKLTSHU, Mojerla, Telangana, India M Sreenivas Assistant Professor, Department of Plantation, Spices, Aromatic and Medicinal crops, SKLTSHU, Rajendranagar, Hyderabad, Telangana, India K Nagaraju Assistant Professor, Department of Vegetable Science, SKLTSHU, Mojerla, Telangana, India P Saidaiah Associate Professor, Department of Genetics and Plant Breeding, SKLTSHU, Mojerla, Telangana, India SR Pandravada Principal Scientist, National Bureau of plant genetic resources, Rajendranagar, Hyderabad, Telangana, India Corresponding Author: Syeda Nabeela Thasneem M.Sc. Scholar, Department of Vegetable Science, SKLTSHU, Mojerla, Telangana, India Variability, heritability (h 2 b ) and genetic advance studies in dolichos bean (Lablab purpureus L.) genotypes Syeda Nabeela Thasneem, M Sreenivas, K Nagaraju, P Saidaiah and SR Pandravada Abstract The present experiment was conducted to study variability, heritability and genetic advance in dolichos bean (Lablab purpureus L.) genotypes. It was carried out during Rabi season, in the year 2021-22. The study was under taken on 45 genotypes of Dolichos Bean using randomized block design (RBD) with two replications. High genetic variability was observed for the characters viz., number of pods per plant, 100-seed fresh weight, pod length, pod width, pod yield per plant and reducing sugars and indicates the significance of these characters to be used for selecting superior genotypes. High heritability coupled with high genetic advance as per cent of mean was observed in characters viz., vine length, number of primary branches per plant, number of pods per plant, pod yield per plant, 100-seed fresh weight, pod length, pod width, seed length, seed width, days to 50% flowering, days to first harvest, reducing sugars and total sugars. Keywords: Lablab purpureus, GCV, PCV, genetic advance, heritability Introduction Dolichos bean, also known as Indian bean, Hyacinth bean, sem, Egyptian kidney bean, bonavist bean, avarai, and avari chikkudu, is one of the most well-known traditional vegetables that is widely grown in India. Archaeo-botanical discoveries in India between 2000 and 1700 BC at Heller, the earliest Iron-Age site in Karnataka and 1200-300 BC at the Veerapuranam excavation site in Andhra Pradesh attest to its Indian provenance (Fuller, 2003) [9] . It is a great crop to grow in arid regions with little rainfall. The crop prefers a season that is moderately cool, with sowing taking place in July and August and fruiting begins in winter. The pods are naturally abundant in minerals including Ca, P, and Fe as well as carbohydrates, proteins, fats, and fibre (Naeem et al., 2009) [8] . It may be a herbaceous perennial but is grown as an annual with races that are bushy, upright, or climbing. It is a good nitrogen fixer and is occasionally used as a cover crop or for animal fodder. Short day and long day varieties are both available, and it is photosensitive. The selection of superior genotypes and the enhancement of yield attributes require genetic variability, heritability and genetic advance in order to improve a crop. The development of breeding in beans is influenced by the kind, degree, and interactions of phenotypic and genotypic variation in yield and yield-attributing traits. Heritability of a metric character is a parameter of particular importance to breeders because it measures the degree of similarity between the parents and the off-springs and its magnitude indicates how effectively a genotype can be identified by its phenotypic expression, while genetic advancement assists in applying the necessary selection pressure (Burton et al., 1953) [3] . The present investigation was therefore aimed to study variability, heritability and genetic advance among 45 genotypes of dolichos bean. Material and Methods The present experiment was carried out during the period from November 2021 to March 2022 at PG Research Block, College of Horticulture, Mojerla. The experimental material for this study comprised of 45 different genotypes of dolichos bean obtained from NBPGR i.e, IC- 261004, IC-261005, IC-261010, IC-261311, IC-372119, IC-382830, IC-384066, IC-412977, IC-413709, IC-413710, IC-426632, IC-426957, IC-426966, IC-426970, IC-426980, IC- 426983, IC-426987, IC-426988, IC-426991, IC-426694, IC-427414, IC-427417, IC-427423, IC-427424, IC-427425, IC-427428, IC-427429, IC-427436, IC-427456, IC-427462,