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ISSN: 2329-8863

Advances in Crop Science and Technology
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Research Article

Genetic and Correlation Studies in Double Genotypes of Tuberose (Polianthes tuberosa) for Assessing the Genetic Variability

Ranchana P*, Kannan M and Jawaharlal M
Department of Floriculture and Landscaping, HC& RI, TNAU, Coimbatore-3, India
 
Corresponding Author : Ranchana P
Department of Floriculture and Landscaping
HC& RI, TNAU, Coimbatore-3, India
E-mail: [email protected]
Received August 09, 2013; Accepted August 27, 2013; Published August 29, 2013
Citation: Ranchana P, Kannan M, Jawaharlal M (2013) Genetic and Correlation Studies in Double Genotypes of Tuberose (Polianthes tuberosa) for Assessing the Genetic Variability. Adv Crop Sci Tech 1:109. doi:10.4172/2329-8863.1000109
Copyright: © 2013 Ranchana P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Five genotypes of tuberose (double) were evaluated for twelve different parameters to ascertain the genetic variability and association among the characters during the year 2011-12 at Tamil Nadu Agricultural University, Coimbatore. The results of the experiment revealed that ‘Suvasini’ showed its superiority for certain parameters viz., plant height, number of leaves per plant, number of florets/ spike, length of the floret, weight of florets per spike, number of spikes/m2 and yield of florets/ plot (2*2 m). The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all twelve characters studied. The higher PCV and GCV estimates were found for number of florets/spike. High heritability with high genetic advance was observed for number of florets per spike, number of spikes/m2, rachis length and yield of florets per plot (2×2 m). The correlation studies revealed that plant height exhibited positive correlation with spike length, yield of florets/plot (2×2 m), number of florets per spike, flowering duration, number of leaves per plant, weight of florets per spike, number of spikes/m2, rachis length and length of the floret. There exists a positive relationship of number of leaves per plant with weight of florets per spike, yield of florets/plot (2×2 m), spike length, flowering duration, and number of florets per spike, length of the floret, number of spikes/m2 and rachis length. Spike length exhibited positive and significant association with yield of florets/ plot (2×2 m), number of florets per spike, weight of florets per spike, number of spikes per m2, length of the floret and rachis length.

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