RESEARCH ARTICLE Stability of grass pea (Lathyrus sativus L.) genotypes in different agroclimatic zone in eastern part of India with special reference to West Bengal Chandrasekhar Chatterjee . Manojkanti Debnath . Nilima Karmakar . Raghunath Sadhukhan Received: 21 March 2019 / Accepted: 15 July 2019 Ó Springer Nature B.V. 2019 Abstract A total of twenty-five grass pea (Lathyrus sativus L.) genotypes of released varieties, advanced lines, mutants and local collections were explored in this study. These genotypes were cultivated for two succeeding years in three different locations namely red lateritic zone (Shekhampur), gangetic alluvial zone (Kalyani) and saline zone of Sundarban region of west Bengal (Kakdwip) to evaluate the performance on the basis of yield and quality traits. The stability of the genotypes was established by AMMI and Biplot analysis. It was found that the neurotoxin content of grass pea, b-L-oxalyl-2,3diaminopropionic acid (b- ODAP), did not show any difference under various environmental conditions and the gangetic alluvial zone was proved to be the ideal test location for grass pea genotypes. The BK-37-2 advanced line was found to be the most stable genotype in respect of yield under all the tested environments and can be used in future breeding programmes. Keywords Grass pea Á b-ODAP Á Stability Á Yield Á AMMI Á Biplot Introduction Lathyrus sativus L. is commonly known in many names like grass pea, dogtooth pea, grass pea vine, indian pea, riga pea and wedge pea vine etc. Tradi- tionally this crop is being used for animal feed as forage and for human consumption as a food grain since time immemorial. The excellence of this crop rests in its sturdiness, drought tolerance, and adapt- ability to a wide range of soil types and hence is recommended in arid and semi-arid regions (Palmer et al. 1989). Besides this, it has low fertilizer and water requirements. Grass pea has positive effects on soil structure as its deep taproot prevents soil compaction. When ploughed in, grass pea is a good green manure that returns nutrients to the soil and provides organic matter (Laza ´nyi 2000). Grass pea (2n = 14) is an Angiosperm crop of the kingdom Plantae within the order: Fabales; family: Fabaceae; sub-family: Faboi- deae; tribe: Vicieae; genus: Lathyrus. The genus contains approximately 150 species, of which L. sativus is important for food, feed and fodder while winged vetchling L. Ochrus and red vetchling L. C. Chatterjee Á R. Sadhukhan Department of Genetics and Plant Breeding, Faculty of Agriculture, BCKV, Mohanpur, Nadia, West Bengal, India M. Debnath Department of Statistics, Faculty of Agriculture, UBKV, Pundibari, Cooch Behar, West Bengal, India N. Karmakar (&) Department of Soil Science and Agricultural Chemistry, NM College of Agriculture, Navsari Agricultural University, Navsari, Gujarat, India e-mail: nilimanau13@gmail.com 123 Genet Resour Crop Evol https://doi.org/10.1007/s10722-019-00809-2