Genetic variability and correlation studies in Gladiolus hybrida L. under tarai condition of Uttarakhand
2013
Kumar, Prabhat | Maurya, Ravi Kumar | Chakraborty, Binayak | Mer, Rakesh | Mishra, D. S.
Twenty nine genotypes of gladiolus were evaluated for fifteen different characters to ascertain the genetic variability and association among the characters during 2010–11 at G.B. Pant University of Agriculture and Technology, Pantnagar. The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all the fifteen characters studied. The higher PCV and GCV estimates were found for number of daughter corm/mother corm and cormel production. High heritability with high genetic advance was observed for plant height, days to first floret show colour, weight of corm and cormel production. The correlation studies revealed that plant height exhibited highly significant and positive correlation with weight of corm, corm diameter, rachis length and number of leaf per plant. There exists a significant and positive relationship of number of leaf per plant with weight of corm, corm diameter and rachis length; spikes length with number of leaves per plant. Floret diameter also exhibited significant and positive correlation with marketable spike per corm and number of daughter corm per mother corm. However, non-significant and positive correlation was found in characters viz., plant height with durability of spike, marketable spike per corm and number of spike per corm; days to first floret show colour with spike length, rachis length and number of floret per spike; number of leaf per plant with cormel production; durability of spike with rachis length and corm diameter.
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