The degree of genetic amelioration is determined by the quantum of genetic variability and the degree to which heritable and nonheritable variants are associated to the traits. The present investigation was carried out in Sali, 2018 to understand the correlation for yield attributing traits in some indigenous rice landraces of Assam. Here, 10 indigenous rice landraces and one check variety were evaluated for quantitative and grain characters. Under the organic cultivation method correlation analysis revealed that grain yield hactare-1 had a positive and significant correlation with ear bearing tiller, and harvest index indicating the importance of these traits for yield improvement. Similarly, for the conventional cultivation method correlation analysis revealed that grain yield hactare-1 had a positive and significant correlation with ear bearing tiller. The selection of any of these characters will have a direct response on the grain yield of the indigenous cultivars. Head rice recovery (HRR) an important market value character is significantly negatively correlated with kernel length (KL) and grain length (GL).

correlation, indigenous, landraces.

Based on the findings regarding the associations among grain yield and its components, it is reasonable to infer that the strategic selection of genotypes through correlation analysis facilitates the concurrent enhancement of multiple traits contributing to both yield and grain quality in rice. This phenomenon may be attributed to the pleiotropic effects of specific genes and/or the involvement of common regulatory factors, resulting in either positive or negative relationships at the associated yield-contributing traits. Consequently, it becomes crucial to acknowledge the impact of selected or desired yield-contributing traits on grain quality. It is noteworthy that the ultimate marketability of developed rice is significantly influenced by grain quality considerations alone in the realm of rice cultivation

Lonishree Dutta, K.K. Sharma and Dibosh Bordoloi (2023). Correlation Study on Some Rice Landraces of Assam for Yield and Ancillary Traits under Organic and Conventional Cultivation Method. Biological Forum – An International Journal, 15(12): 309-312.