Performance of Gladiolus (Gladiolus hybridus Hort.) Genotypes under Arid Conditions of Rajasthan
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Date
2023-08-19
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Agriculture University, Jodhpur
Abstract
A field experiment was conducted on 10 genotypes of gladiolus (‘Suchitra’,
‘Gunjan’, ‘Jyotsna’,‘White Prosperity’, ‘Chandni’, ‘Pusa Shanti’, ‘Creamy Green’,
‘Rani’, ‘Green Spire’ and ‘Punjab Dawn’) in a Randomized Block Design with three
replications, at the Instructional Farm, College of Agriculture, Jodhpur, during the
Rabi season (November to April) of 2022-23, to study performance and expression of
genetic variability of gladiolus genotypes under Jodhpur (Rajasthan) conditions.
The performance of genotypes depicted that ‘White Prosperity’ were recorded
tallest plants (107.33 cm), longest spikes (86.00 cm), maximum number of leaves per
plant (10.30), leaf width (4.13 cm), leaf length (50.10 cm), spike diameter (0.87 cm),
rachis length (66.00 cm), number of florets per spike (16.17), floret diameter (8.23
cm), number of cormels produced per plant (40.00), weight of cormels per plant
(27.77 g) and vase life of spike (8.74 days). The genotype ‘Punjab Dawn’ yielded the
highest number of spikes per plant (2.40) and higher spike yield of (157.57 thousand
per hectare) amongst all the genotypes. The genotype ‘Chandni’ required the
minimum days to spike emergence (59.41 days) and the minimum days to first floret
opening from spike emergence (8.53 days). The genotype ‘Gunjan’ had the highest
yield of corms per plant (2.94) and estimated corm yield per hectare (169.696
thousands) as well as maximum diameter of corm (4.71 cm) & weight of corm (59.00 g).
Genetic variability among the genotypes was estimated in terms of range,
GCV and PCV, and correlation among the 20 parameters of study was analysed. The
number and weight of cormels produced per plant recorded high order estimates for
GCV indicating that these characters were governed by the additive gene effects and
hence, selection could be effective for their improvement. Analysis of variance
exhibited significant differences for all the characters. Analyses of correlation,
genotypic correlation was higher corresponding to phenotypic correlation for most of
the parameters.
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Citation
Choudhary, Rajneesh 2023. Performance of Gladiolus (Gladiolus hybridus Hort.) Genotypes under Arid Conditions of Rajasthan. M.Sc. Thesis, College of Agriculture, Agriculture University, Jodhpur