National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The experiment on ten genotypes of gladiolus (Gladiolus grandiflorus L.) was conducted to work out the genetic variability, heritability, genetic advance and genetic divergence effects of their various attributes on spike yield. The analysis of variance revealed that mean squares due to treatments were highly significant for all characters. The magnitude of phenotypic coefficient of variation was higher than corresponding genotypic coefficient of variation for all the characters. Expected genetic advance expressed as per cent of mean ranged from 4.83% to 102.96%. The highest of genetic advance as percentage of mean was recorded for number of cormels per plant (102.96%) and lowest for number of spikes per plant and number of spikes per hectare (4.83%). High genetic advance in percent of mean coupled with high heritability was recorded for the characters of number of cormels per plant, weight of cormels per plant, spike yield per hectare, vase life, average weight of spike, duration of flowering, length of spike, days taken for initiation of spike, number of leaves per plant, days taken for complete sprouting, height of plant, percentage of sprouting, number of cormels per plant provide greater scope for further improvement of these traits in advance generations. Genetic advance ranged from 0.066 to 8278.50. The genetic advance is highest for number of spikes per hectare (q) (8278.50) and lowest number of spikes per plant (0.066). The PCV were higher than GCV for all the characters taken in to consideration. Phenotypic and genotypic coefficient variations were highest for number of cormels per plant (50.04 and 50.11 respectively) and lowest for number of spike per plant (3.44 and 5.04 respectively). Heritability and genetic advance indicate that the additive nature of gene action and reliability of those characters for selection and emerged as ideal traits for improvement through selection. Heritability and genetic advance indicate that the additive nature of gene action and reliability of those characters for selection and emerged as ideal traits for improvement through selection.
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