Genetic analysis of morphological and quality parameters of barnyard millet [Echinocloa frumentacea (Roxb.) Link)] germplasm collected from Uttarakhand
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Date
2020-02
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation entitled “Genetic analysis of morphological and quality parameters of barnyard millet (Echinocloa frumentaceae (roxb.) Link) germplasm collected from Uttarakhand” was conducted with 87 germplasm accessions of barnyard millet at G.B.P.U.A&T, Pantnagar during Kharif 2016 and 2017. The experiment was laid in RBD along with two checks (VL181 and PRJ-1) in three replications. The data was recorded for 13 morphological and 10 yield attributing traits. Allaccessions were observed to have erect growth habit and one-sided spikelet arrangement with complete absence of lower raceme branching. Majority of germplasm entries exhibit presence of culm branching and concave grain shape. Most of the accessions exhibit pyramidical inflorescence of green colour and compact panicle having grey or light grey grain, thick lower raceme and absence of lodging. Intermediate, phenotype was exhibited by germplasm with respect to presence or absence of pigmentation at internodes and leaf sheath, and straight or curved lower raceme shape. Analysis of variance revealed highly significant differences among accessions for all the quantitative traits, suggesting presence of sufficient variability. A wide range of mean values were exhibited by the accessions for all the characters. High PCV and GCV was recorded for lower raceme length and peduncle length along with high heritability and high genetic advance as per cent of mean, indicating predominance of additive effects in expression of these traits and high efficiency of phenotypic selection for these characters. Basal tiller number showed highly significant positive correlation with yield/plot and was the main positive medium to affect the yield by various characters as revealed by path analysis. Eighty-seven germplasm accessions of barnyard millet were grouped into four clusters using Mahalanobis D2 analysis, among which cluster I was the major cluster, comprising 85% of the total germplasm accessions while cluster II with 9 and Cluster III and IV with one accession each. The inter-cluster distance was observed to be highest between cluster I and cluster IV (23.15) followed by cluster II and III (17.51). Highest cluster mean values for most of the traits were exhibited by cluster III. Lower raceme length presented maximum contribution (30.18%) towards diversity which was followed by peduncle length (26.69 %) and 1000 seed weight (25.18 %). The results from analysis of micronutrient content recorded highest amount of iron in SANWA 7874 (28.19 mg/100g), highest zinc content in SANWA 7877 (5.93mg/100g), highest manganese content in PGR-SA-13-07 (4.70mg/100g) and copper content was found to be highest in GP-2011-129 (0.72mg/100g).