Genetic Variability in the Morphological and Nutritional Traits of Multi Cut Sorghum Hybrid Derivatives

摘要

Seventeen superior genotypes derived from non segregating hybrid derivatives (ICSA 15 × 8428;rn2-4-2-1-2-1-4, ICSA 15 × 8428; 2-4-2-1-2-3-2, ICSA 1 × HD4; 2-1-5-1-5-2, ICSA 1 × HD4; 2-1-5-3-1-5,rnICSA 4 × HD4; 4-2-1-1-2-1, ICSA 4 × HD4; 4-2-1-2-2-1, ICSA 4 ′ HD7; 2-2-1-1-1-3, ICSA 1 × 8428;rn1-1-3-1-1-1, ICSA 1 × 8428; 1-1-3-1-7-1, ICSA 1 × 8428; 1-1-3-1-5-1, ICSA × 8428; 2-3-1-1-2-3-3,rnICSA 1 × JSEL 3; 2-1-2-1-1-3, ICSAS × JSEL 11; 1-1-1-5-1-2, ICSA 15 ′ 8428; 2-4-2-1-2-1-3, ICSArn15 × 8428; 2-4-2-1-2-1-5, ICSA 1 × 8428; 2-3-1-1-2-1-1, ICSA 1 × 8428; 2-3-1-1-2-4-6 ) selected fromrnsorghum germplasm based on previous year performance were grown along with check SSG 59-3 tornevaluate them for nutritional (CP, NDF, ADF, Cellulose, Lignin and sugar) and morphological (Plantrnheight, leaf length, number of leaves, leaf width, stem girth etc.) along with fodder yield andrnavailability index values. Samples were collected at 60 days after sowing (I) and 55 days after firstrnharvest (II cut). Mean CP contents of genotypes were higher in II cut (12.33) compared to I cutrn(10.21%). On the other hand cell wall fractions (NDF, ADF, cellulose and lignin) accumulation wasrnless in II cut 61.52, 31.27, 26.13 and 3.92) vis-a vis I cut (63.44, 43.92, 30.46 and 4.66%). Sugar, asrnBrix (%) was more in II (11.30) than I cut (7.44%). Availability index values were 2.5 units more forrngenotypes in II cut than I stage of crop harvest. Number of leaves and leaf length was more in Irn(11.17 and 90.68) than II (9.64 and 66.25 cm). Plant height and leaf width was more in genotypes ofrnII cut (136.58 and 6.95) compared to I (107.17 and 6.76). Fodder yield (Green and dry) wasrnsignificantly higher in I than II cut. Average in sacco dry matter degradability was more in II (65.6)rnvis-à-vis I (64.4%) cut. Results of the study revealed that there was increase in CP, sugar contentsrnand availability index values, while reduction in cell wall contents and forage yield in II over I cut.