Author(s): VANLALRUATI , T. MANDAL AND S. PRADHAN

Abstract: Genetic variability studies in tuberose were carried out among 11 varieties for 18 characters at Horticultural Research Farm of Bidhan Chandra Krishi Viswavidyalaya. Days to spike emergence (DAP), length of flower spike and number of spikes per plot showed highest phenotypic and genotypic variance. Higher heritability associated high genetic advance was observed for length of rachis indicating the presence of additive gene action. A study on the association of various morphological traits through correlation and path co-efficient analysis showed that leaf area, diameter of florets, length of florets, length of flower spike, weight of flower spike, florets spike-1, length of rachis and weight of 10 florets exhibited significant and positive correlation with that of spike yield. Spike weight imparted maximum positive direct effect on spike yield followed by field life, floret diameter, florets per spike and spike diameter. Similarly, weight of 10 florets imparted maximum negative direct effect on spike yield followed by leaf area and spike length..

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