Vol. 8, Issue 8 (2019)

Author(s):
R Suresh, A Ramar, S Balakrishnan and B Senthamizh Selvi

Abstract:
The experimental material comprising of 200 turmeric genotypes were evaluated at Department of Spices and Plantation crops, Horticultural College & Research Institute, TNAU, Coimbatore, Tamil Nadu, India during 2017-18. Association analysis of different quantitative traits with rhizome yield plant^-1 in turmeric genotypes were investigated through the study of phenotypic correlation coefficient and path coefficient analysis. The study revealed that, the quantitative traits viz.,weight of mother rhizomes plant^-1 (0.849**), number of primary rhizomes plant^-1 (0.693**), number of secondary rhizomes plant^-1 (0.643**), number of mother rhizomes plant^-1 (0.595**), length of primary rhizome plant^-1 (0.553**), length of secondary rhizome plant^-1 (0.518**), number of leaves plant^-1 (0.442**), plant height (0.440**), leaf area (0.289**), leaf length (0.249**) and leaf width (0.248**) and pseudo stem girth (0.228**) were highly significant and positively correlated with rhizome yield plant^-1. The estimates indicated that the weight of mother rhizome (0.576) had high positive direct effect on rhizome yield plant^-1 followed by leaf area (0.384). Number of primary rhizomes plant^-1 (0.249) and number of secondary rhizomes plant^-1 (0.239) had moderate positive direct effect on rhizome yield plant^-1. The low amount of positive direct effect on rhizome yield plant^-1 was recorded by length of primary rhizome plant^-1 (0.147) and number of leaves plant^-1 (0.122). The negligible amount of direct effect was illustrated for length of secondary rhizome plant^-1 (0.059), plant height (0.030), length of mother rhizome plant^-1 (0.026) and petiole length (0.012). Considering the indirect effect, all the traits had high positive indirect effect on rhizome yield plant^-1 except leaf area, leaf length, leaf width and pseudostem girth where showed moderate indirect effect on rhizome yield plant^-1.