Vol. 10, Special Issue 11 (2021)

Author(s):
Rajani and Lopamudra Bhoi

Abstract:
The present investigation was undertaken to evaluate twelve aromatic rice genotypes including four check varieties namely Pratikshya, Hasanta, MTU-1010 and Sovini. The trial was performed in randomized block design with three replications. Studies were conducted on different yield attributing traits and physiological parameters to assess the availability and extent of genetic variability and the physiological and genetic basis of yield variations in the given population. Significant variation was seen among the test genotypes for all the traits except panicle number as was evident from the analysis of variance. Moderate to high degree of heritability estimates were observed for majority of the traits under study except for panicle number and leaf area index. The characters like grain yield per plant, plot yield and different other growth parameters exhibited high genotypic coefficient of variation coupled with high heritability and high genetic advance. Majority of the traits showed significant and positive associations between yield and yield components like grain yield per plant followed by harvest-index as most important traits which need due consideration at the time of selection. Thus, presence of several contrasting types of inter-relationships would simultaneously lead to improvement in others due to correlated responses. Path analysis studies suggested that selection would be quite efficient in improving yield and yield components in context of germplasm evaluated. The cultures like Geetanjali, Pratikshya, Khudrat, Ketakijoha, MTU-1010, Hasanta, CR-910, CR-907, Pooranbhog, were found to be promising.