International Science Community Association Research Journal of Recent Sciences 2277 - 2502 5 2 2016 February 2 Morpho-physiological and Yield responses of Black gram (Vignamungo L.) and Green gram (Vigna radiata L.) genotypes under Drought at different Growth stages 43 50 EN V. Rani 1 Dept. of Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India K. Dev 2 SagnonParfait Hounsinou1 1 1Laboratoire d’Hydrologie Appliquée, Faculté des Sciences et Techniques (FAST), Université d’Abomey – Calavi, 01 BP: 526 Cotonou, Benin Daouda Mama 2 Laboratoire de Chimie Inorganique et de l’Environnement (LACIE), Faculté des sciences et techniques (FAST), Université d’Abomey – Calavi,01 BP : 526 Cotonou, Benin Abdoukarim Alassane 3 Laboratoire d’Etude et de Recherche en Chimie Appliquée (LERCA), Ecole Polytechnique d’Abomey – Calavi (EPAC), Université d’AbomeyCalavi,Benin Nicaise Yalo 4 Etienne Sagbo 5 Boukari Moussa 6 Dominique Sohounhloue 7 Gupta Ekta 1 Department of Botany, Government College Ajmer, Rajasthan, India Yadav Manoj 2 Negintaji Fahimeh 1 University of Tehran, Tehran, Iran Mehdi Moradi 2 Islamic Azad University, South Tehran Branch, Tehran, Iran Ali Sohrabi 3 Faiza Majid 1 Department of Management Sciences, Shaheed Zulifiqar Ali Bhutto Institute of Science and Technology (SZABIST), Islamabad, Pakistan Bilal Atif 2 Maria Shahid 3 B. Baroowa 1 Department of Environmental Science, Tezpur University, Napaam, Tezpur-784028, Assam, Indian N. Gogoi 2 > Research Paper 2014 11 6 2016 February 2 This study was carried out to evaluate the response pattern of black gram (Vignamungo L.) and green gram (Vigna radiate L.) genotypes under water drought stress imposed at vegetative, early reproductive and pod filling stages on the basis of morpho-physiological traits and yield. Four commonly grown genotypes- T9, KU 301 (black gram) and Pratap, SG 21-5 (green gram) were arranged in randomized block design with three replications. Drought stress was found to have significant inhibitory impact on all the studied traits. Positive correlation of seed yield was obtained with relative leaf water content, plant height, leaf number, leaf area and shoot: root biomass. Early reproductive stage was proved to be the most critical for drought stress as it greatly reduced seed yield (T9-31.28%, KU 301- 48.52%, Pratap-37.12%, SG 21-5- 56.98%). Among the studied genotypes, T9 and Pratap were identified as drought tolerant with higher values of DTI, RP, MP and HI. Copyright@ International Science Community Association