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|Advisor:||KULKARNI, BALAJI S.|
PATIL, SATHEESH R.
|Title:||STUDIES ON GENETIC VARIABILITY IN GAILLARDIA (Gaillardia pulchella Foug.)|
|Publisher:||K.R.C. COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)|
|Abstract:||An investigation with twenty genotypes of gaillardia was carried out to generate information on genetic variability, character association and path analysis at Department of Floriculture and Landscaping Architecture, Kittur Rani Channamma College of Horticulture, Arabhavi during August to February, 2012-2013. Analysis of variance for different quantitative characters revealed significant differences among the genotypes for most of the parameters. The phenotypic coefficient of variation was more than genotypic coefficient of variation for all the studied characters, indicating the role of environmental factors for the expression of these characters. However less difference was observed for genotypic and phenotypic variance for number of branches, number of leaves, stem girth, chlorophyll content, number of flower per ha, flower diameter, number of whorls per flower and number of florets per flower indicating the fact that these characters are not much influenced by environmental factors. This also suggests the presence of sufficient variability, which can be exploited by practicing pureline selection. High heritability with high genetic advance as per cent of mean (GAM) were observed for plant height, number of leaves, number of branches per plant, leaf area, chlorophyll, days taken for first flowering, flower yield per plant, flower yield per hectare, seed yield per plant and seed yield per hectare, flower diameter, number of whorls per flower, number of petals per flower, stalk length, single flower weight and ten flower weight, this indicating the possible role of additive gene action. Which can be further improve by selection. Correlation studies revealed that highly significant and positive association of flower yield per plant with days taken for first flowering, duration of flowering, flower diameter, number of florets per plant, number of whorls per flower, ten flower weights and single flower weight. Also number of branches, number of leaves and leaf area also showed significant and positive correlation with flower yield, indicating the possibility of simultaneous selection for these traits to improve the flower yield. Path analysis for flower yield per plant was directly and positively influenced by days taken for first flowering, days taken for 50 percent flowering, flower diameter, number of petals per flower, number of whorls per flower, which indicated the possibility of increasing flower yield by selecting the genotypes for these characters directly. Per se performance suggested that AGS-17, AGS-8, AGS-10 and AGS-18 were found promising for flower yield.|
|Subject:||Floriculture and Landscaping|
|Theme:||STUDIES ON GENETIC VARIABILITY IN GAILLARDIA (Gaillardia pulchella Foug.)|
|Research Problem:||STUDIES ON GENETIC VARIABILITY IN GAILLARDIA (Gaillardia pulchella Foug.)|
|Appears in Collections:||Theses|
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