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Evaluation and characterization in marigold

KrishiKosh

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Title Evaluation and characterization in marigold
 
Creator Choudhary, Mahesh
 
Contributor Beniwal, B.S.
 
Subject Crossing over, Planting, Fruits, Yields, Additives, Developmental stages, Heterosis, Vegetables, Biological phenomena, Genetics
 
Description The present experiment was conducted at Experimental Orchard of the Department of
Horticulture, CCS Haryana Agricultural University, Hisar during winter seasons of 2011-12 and 2012-
13 on thirty genotypes of both African and French marigold to estimate the genetic variability,
heritability, genetic advance and varietal characterization. The observations were recorded on growth,
flowering and yield parameters. The analysis of variance revealed that the mean sum of squares due to
genotypes were highly significant for all the characters studied, indicating a wide range of variability in
the material investigated. The highest flower yield was observed in genotype Hisar Jaffri-2 followed by
MGH-09-271 and MGH-09-276, while it was lowest in Hisar Beauty. The high GCV and PCV values
were observed for fresh and dry weight of plant, number of secondary branches per plant, number of
buds per plant and number of flowers per plant.
Heritability in broad sense and genetic advance as per cent mean were higher for fresh weight of
plant, dry weight of plant, number of flowers per plant, number of buds per plant and number of
secondary branches per plant. Association analysis revealed high significant positive correlation of
flower yield per plant with number of secondary branches per plant, number of buds per plant, number
of flowers per plant, dry weight of plant, fresh weight of plant, fresh weight of flower, dry weight of
flower, plant spread, flower diameter, stem diameter, duration of flowering and days taken to first
flower opening, indicating selection of these characters for crop improvement and breeding strategies.
Path analysis depicted that number of flowers per plant had the highest direct and positive effect on
flower yield per plant, closely followed by fresh weight of flower, flower diameter, dry weight of
flower and dry weight of plant.
Based on D2 values, all the thirty genotypes were grouped into six clusters in both the years, i.e.,
2011-12 and 2012-13, indicating the presence of considerable amount of genetic diversity among the
genotypes under study. On the basis of morphological characters, the marigold genotypes were
characterized and categorized effectively. The plant growth habit, branching habit, leaflet shape, leaf
colour, stalk shape, disc floret, floret colour, etc., were the key characters, therefore, can be used as
morphological descriptors for the varietal identification in marigold.
 
Date 2016-03-08T09:18:08Z
2016-03-08T09:18:08Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/64896
 
Language en
 
Format application/pdf
 
Publisher CCSHAU