Identification and Evaluation of Rice (Oryza sativa L.) Genotypes / Varieties for Drought Tolerance: Growth & Yield Approaches
Saurabh Singh *
Department of Crop Physiology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.), India.
Shambhoo Prasad
Department of Plant Molecular Biology & Genetic Engineering, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.), India.
Jitender Bhati
Department of Genetics and Plant Breeding, Gochar Mahavidyalaya, Rampur Maniharan, Saharanpur (U.P.), India.
Vandna Kushwaha
Department of Plant Molecular Biology & Genetic Engineering, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.), India.
Vinai Kumar
Department of Crop Physiology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.), India.
Prabhat Kumar Singh
Department of Plant Molecular Biology & Genetic Engineering, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.), India.
*Author to whom correspondence should be addressed.
Abstract
The investigation entitled “Identification and evaluation of rice (Oryza sativa L.) genotypes/ varieties for drought tolerance: growth & yield approaches” was conducted during Kharif season, 2020-21 and 2021-22 at the field of SIF at A.N.D.U.A&T, Kumarganj, Ayodhya, Uttar Pradesh. Twelve elite rice genotypes were shown in RBD with three replications. Among all the genotypes plant height was observed highest in Nagina 22 and lowest was found in NDR 97 under drought condition. Drought stress affects the tiller number/ plant and panicle bearing/ plants and flag leaf. Panicle length of Nagina 22, Sahbhagi Dhaan and Sukha Dhaan was affected during drought stress condition and RWC affected from genotype to genotype. With respect to grain yield per plant Nagina 22, Sushk Samrat and Sukha Dhaan performed extremely well under the drought condition. Result suggested that plant height and yield/ plant can be used as selection indices for drought tolerance.
Keywords: Height, rice, flag leaf area, RWC, grain, panicle, yield