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International Journal of Applied Agricultural & Horticultural Sciences
  • 29 April, 2024
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Language : English
DOI Prefix : 10.37322
P-ISSN : 0974-0775
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Vol. 5 (5) : September-October 2014 issue
Green Farming Vol. 5 (5) : 861-865 ; September-October, 2014
Genetic variability and correlation studies in gladiolus
S.V. GEETA1*, A.M. SHIROL2, D.M. RENUKA3 and M. SHIRAGUR4
Department of Floriculture and Landscape Architecture, K.R.C. College of Horticulture, (University of Horticultural Science, Bagalkot) Arabhavi - 591 310 (Karnataka)
Designation :  
1P.G. Student *(geethorti@gmail.com), 2,4Assoc. Prof., 3Tech. Asstt.
Subject : Horticulture (Spices, Ornamental & Plantation Crops, Floriculture and Landscape Architecture etc.)
Paper No. : P-1810
Total Pages : 5
Received : 11 April 2014
Revised accepted : 23 September 2014
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Citation :

S.V. GEETA, A.M. SHIROL, D.M. RENUKA and M. SHIRAGUR. 2014. Genetic variability and correlation studies in gladiolus. Green Farming  Vol. 5 (5) : 861-865  ;  September-October, 2014

ABSTRACT
The present investigations were carried to evaluate 15 gladiolus varieties for vegetative, floral, corm and cormel characters. The estimated phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for twenty one characters studied. The traits leaf area, number of florets per spike, weight of spike, number of spike per plant, number of daughter corms per plants, weight of daughter corm, number of cormels per plant, weight of cormels exhibited high heritability (>75%) coupled with high genetic advance as per cent mean (>30%) which indicated that, their was additive gene action in expression of these traits and there by further improvement of these traits could be made by selection. A study on the association of various morphological traits through correlation analysis in gladiolus showed that number of spike per plant had significant and positive correlation with duration of flowering and number of daughter corm per plant. Spike length exhibited significant and positive correlation with plant height, number of leaves, leaf length, leaf width, leaf area, rachis length, number of florets per spike, floret diameter, weight of spike, vase life, weight of daughter corm, number of cormels per plant. The results of investigation revealed that number of spike per plant spike length and number of florets per spike are important yield and quality characters. Hence, these characters may be considered as selection indices in breeding programme.
Key words :
Coefficient of variation, Gladiolus, Genetic variability, Growth & yield parameters, Morphological traits.