Vol. 11, Issue 7 (2022)

Author(s):
Akrati Dev, DK Dwivedi, Ashish Kumar, Kirti Singh, NA Khan, KM Komal, Shambhoo Prasad and Adesh Kumar

Abstract:
A study was conducted to determine the genetic variability and correlation between yield and other yield-related characteristics of rice genotypes. In an augmented design, 255 genotypes were grown during the kharif season under direct seeding conditions. The analysis of variance revealed significant differences for all of the studied characters, indicating that the genotypes have a high genetic variability. GCV and PCV estimates were high for traits such as grain yield per plant, harvest index, and seedling vigour, indicating their importance in rice yield selection. For the traits like no. of spikelets panicles^-1, spikelets fertility, plant height, and days of 50% flowering, high heritability was observed in conjunction with high expected genetic advance as a percentage of mean. Days to 50% flowering, biological yield plant^-1, seedling vigour, and number of grains panicle^-1 are all factors to consider. Grain yield plant^-1 was strongly related to the number of spikelets^-1 panicles, biological yield plant^-1, harvest index, and test weight. Path coefficient analysis revealed that harvest-index, followed by biological yield plant^-1, has a positive direct effect on grain yield plant^-1.