Study on Genetic Variability for Forage Yield and Quality Traits in Forage Sorghum [Sorghum bicolor L. Moench]
Asian Research Journal of Agriculture · pp. 52–65 · Published 8 Jul 2024
10.9734/arja/2024/v17i3472Abstract
The initial research related to germplasm screening was carried out in the experimental area of Instructional Dairy Farm, GBPUAT Pantnagar during kharif season 2018. The experimental material for this experiment consisted of two hundreds and eighty diverse germplasm lines of sorghum along with six checks viz., SSG 59-3, Pant Chari- 5, Pant Chari- 6, CSV-21 F, CSH-22S, and CSV-24SS. The germplasm lines were evaluated in Augmented Block Design for nineteen forage yield related traits and thirteen quality traits. The statistical analysis for genetic variability was done using analysis of variance (ANOVA), heritability (h2), genotypic coefficient of variation (GCV), phenotypic coefficient of variation (PCV), and genetic advance (GA). The analysis of variance revealed that the genotypes and checks were showing a highly significant differences for all the traits under study indicated existence of inherent genetic differences among genotypes for different characters. Mean performance of forage yield and quality related traits exhibited a wide range of variability. GCV and PCV values were observed low for most of the characters whereas high for anthracnose, zonate leaf spot and shoot fly incidence. The value of genetic advance was observed high for leaf area, green fodder yield per plant, dry fodder yield per plant, hydrocyanic acid content, plant height, anthracnose, and shoot fly incidence were relatively more than other characters. Genetic advance as per cent of mean was observed low for days to maturity, dry matter per cent, in-vitro dry matter disappearance, neutral detergent fiber, acid detergent fiber, cellulose content whereas high for leaf area, flag leaf width, panicle length, panicle width, 1000-grains weight, grain yield per plant, green fodder yield per plant, dry fodder yield per plant, total soluble solids, silica content, anthracnose, zonate leaf spot and shoot fly incidence. Heritability values were found high for all the traits under study. The genotypes bearing the desired values for different genetic variability parameters and mean performance for can be exploited in future breeding programmes for the improving forage genotypes. These genotypes can be used as donor parents in crop improvement programme for improving forage yield and quality related traits along with improved resistance against anthracnose, shooty fly and zonate leaf spot.
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