Correlation and Path Analysis Studies in Single Type Tuberose

Genetic variability studies in tuberose were carried out among 10 varieties for 12 characters at Botanical gardens, Tamil Nadu Agricultural University, Coimbatore during the year 2011–2013. The correlation studies revealed that positive and significant association was observed for number of florets/spike with weight of florets per spike (0.256), yield of florets per plot (4 * 1 m) (0.178), number of spikes per m² (0.100) and length of the floret (0.094) at genotypic level. Path analysis showed that the weight of florets per spike (0.6380), number of leaves per plant (0.5784), flowering duration (0.3746), rachis length (0.2776), days taken for sprouting of bulb (0.2460), length of the floret (0.2286) and days to spike emergence (0.0203) found to be the dominating contributors towards the flower yield. Hence the characters viz., weight of florets per spike, number of leaves per plant, flowering duration, rachis length, days taken for sprouting of bulb, length of the floret and days to spike emergence had significant positive correlation co-efficients and positive direct effects on yield which formed reliable indices for selection of genotypes for yield.