Rice is a staple cereal crop of Asia as well as India. In India unavailability of quality seed is still a problem. Quality seed with good physiological performance with respect to seed vigour is an important input to get higher yield. Quality seed with good stand establishment and seed vigour not only leads to good stand establishment but also shows tolerance to adverse climatic condition. In the present investigation we have used 120 rice landraces from different places of India and they were examined for six traits contributing seed vigour viz., germination Percentage (G%), root length (RL), shoot length (SL), seedling dry weight (SDW), seed vigour index I (SVI I) and seed vigour index II (SVI II). From the 120 genotypes 12 genotypes for SVI I and 15 genotypes for SVI II are recorded very high values. High variability in all the traits with good heritability (H2), PCV, GCV and genetic advance (GA) were recorded. A significant and positive correlation was found with seed vigour I and II with G%, RL, SL, SDW. In principal component analysis PC1 found with Eigen value 3.889 fond to contribute highest to the population (64.81%). The genotypes with high seed vigour can be used as in future breeding programs.

Seed vigour index, Germination percentage, seedling dry weight, root length

The present investigation focuses on variability study and correlation analysis of seed vigour-related traits by using 120 genotypes collected from different states of India. With regard to every aspect of seed quality, a great deal of variation is seen among the landraces and a positive correlation was observed between seed vigour index I and II with traits like shoot length, root length, germination percentage and seedling dry weight.

Ramakrushna Bastia, Devraj Lenka, Sharat Kumar Pradhan, Simanta Mohanty, P Sanghamitra, Kailash Chandra Samal and Manasi Dash (2022). Variability and Correlation Study of different Seed Vigour Parameters in Rice (Oryza sativa L.). Biological Forum – An International Journal, 14(4a): 817-821.