GENETIC ANALYSIS FOR QUANTITATIVE AND QUALITATIVE TRAITS IN F2 SEGREGATING POPULATION OF CHINA ASTER (Callistephus chinensis [L.] Nees.)
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Date
2016-08
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K.R.C. COLLEGE OF HORTICULTURE COLLEGE OF ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
An investigation on “Genetic analysis for quantitative and qualitative traits in F2 Segregating population of China aster [Callistephus chinensis (L.) Nees.]” was carried out during 2015-2016 at department of Floriculture and Landscape Architecture, Kittur Rani Channamma College of Horticulture, Arabhavi.
The two F2 populations of China aster viz., AAC-1 × Arka Poornima and Arka Kamini × P G Purple were found that, the estimation of GCV and PCV values were relatively higher with high heritability and high GAM for number of flowers per plant, individual flower weight, weight of ten flowers and flower yield per plant in both the crosses. The estimates of GCV and PCV values were higher with high heritability and high GAM for plant height, plant spread in North- South, East-West and flower stalk length in Arka Kamini × P G Purple and for number of branches and leaf area in AAC-1 × Arka Poornima were found high indicating the possible role of additive gene action in their genetic control. Yield per plant had positive and highly significant correlation with number of flowers per plant, individual flower weight, weight of ten flowers, flower diameter, ray florets length and disc diameter in both the F2 segregating population of China aster, suggesting the possibility of simultaneous selection for these characters.
Path analysis for flower yield per plant revealed that number of flowers per plant and individual flower weight had high direct effects, which indicated the possibility of increasing flower yield by selecting the F2 segregating population for these characters directly in both the crosses. Segregation of flower colour indicated recessive epistasis 9:3:4 (Deep pink: Light pink: White) in AAC-1 × Arka Poornima and dominant epistasis 12:3:1 (Purple: Pink: Light pink) in Arka Kamini × P G Purple.
The F2 population of AAC-1 × Arka Poornima had performed better for yield traits compared to Arka Kamini × P G Purple.
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TH571
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