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Researcher Rakhamaji, Raut Vijaykumar
Advisor Dodake, S. S.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
Publisher Mahatma Phule Krishi Vidyapeeth
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Agriculture & related technologies ♦ Techniques, equipment & materials
Subject Keyword Amaranthus ♦ Genetics and Plant Breeding
Abstract The investigation on “Genetic Diversity in Grain Amaranthus (Amaranthus hypochondriacus L.)†was conducted to study genetic diversity in quantitative characters and study nature and extent of genetic diversity using molecular markers. Twenty eight genotypes were evaluated in a randomized block design with three replications, during rabi 2011. The statistical analysis was done to determine the G.C.V., P.C.V., Heritability, Genetic Advance, and D2 analysis using the data on nine quantitative characters. The quantitative characters were days to 50% maturity, days to maturity, plant height at maturity, length of inflorescence, width of inflorescence, stem girth, grain yield per plant, grain yield per plot and grain weight. Phenotypic coefficient of variation (PCV) was found to be equal or more than genotypic coefficient of variation (GCV) for all nine characters indicating the role of environment for expression of the traits. The grain yield per plant exhibited the highest GCV and PCV (29.31 and 31.90 respectively). It was followed by grain yield per plot and length of inflorescence The character days to maturity had least GCV and PCV. Heritability (b.s). For the characters viz., days to 50%, flowering, days to maturity, grain weight, plant height at maturity, stem girth, grain yield per plant, grain yield per plot expressed high estimate of heritability in broad scence indicating the scope for selection of these traits. Days to 50% flowering, days to maturity and grain weight all showed highest 100% heritability and width of inflorescence showed less heritability 53%.Selections based on these characters would be most effective for achieving high yields in Amaranthus. The D2 statistic showed that there was adequate diversity amongst the strains with D2 values ranging from 25.35 to 208.24 On the basis of these values, twenty eight strains under study were grouped into five clusters. Cluster I contained maximum number of genotypes (12) while cluster II had 8 genotypes. Cluster III had 5 and cluster V had 2 genotypes while cluster IV was monogenotypic. The maximum intercluster distasnce was observed between cluster III and V (208.24) followed by cluster II and V (158.62).
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Maharashtra
Size (in Bytes) 607.61 kB