Path Coefficient Analysis of Rice (Oriza sativa L.) Genotype under Laboratory Conditions
Sunil Kumar
Department of Seed Science and Technology, Acharya Narendra Deva University of Agriculture and Technology Ayodhya, Uttar Pradesh, (224229), India.
S. C. Vimal
Department of Seed Science and Technology, Acharya Narendra Deva University of Agriculture and Technology Ayodhya, Uttar Pradesh, (224229), India.
Jay Singh *
Department of Seed Science and Technology, Chandra Shekhar Azad University of Agriculture and Technology Kanpur, Uttar Pradesh, (208002), India.
Rishabh Gupta
Department of Genetics and Plant Breeding, Acharya Narendra Deva University of Agriculture and Technology Ayodhya, Uttar Pradesh, (224229), India.
Niharika Yaduvanshi
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology Kanpur, Uttar Pradesh, (208002), India.
Yogendra Pratap Singh
Department of Seed Science and Technology, Chandra Shekhar Azad University of Agriculture and Technology Kanpur, Uttar Pradesh, (208002), India.
*Author to whom correspondence should be addressed.
Abstract
The present investigation was conducted at Seed Testing Laboratory of Seed Technology Section, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.). The study was based on the germplasm evaluation of 45 germplasm including three checks viz., NDR-2065, BPT 5204 and Sambha sub1. Seedling length (0.366), speed of germination (0.132), Seed width (0.108), shoot length (0.082), seed weight (0.064), root length (0.061), vigour index-II (0.057) and L/B ratio (0.033) existed substantial positive effects on vigour index-I. Seeds weight (0.875), followed by seed width (0.610), exerted very high order positive indirect effects on vigour index-I seed weight substantial positive indirect effects on seed vigour index-I via seed width were also contributed by seed width (0.610), seedling length (0.552), L/B ratio (0.294), seedling dry weight (0.037) made considerable positive indirect on vigour index-I. The lowest and highest mean performance for root length (cm) was noted for B-4311 (10.50 cm) and HRT-m-20/3220 (31.20 cm) respectively. None of the 45 lines were statically inferior or superior than general mean for root length which 14.63 cm. out of 45 genotypes, nineteen were statistically at par with the best genotype is HRT-m-20/3220.
Keywords: Direct effect, evolution, germplasm, vigour, seed testing, germination speed, genotype, coefficient analysis, rice, plant breeding