Estimate of Genetic Parameters and Correlation Coefficient in Sudan Grass (Sorghum sudanense, (Piper) Staff) | ||
| Journal of Plant Production | ||
| Article 7, Volume 8, Issue 9, September 2017, Pages 935-938 PDF (221.13 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2017.40915 | ||
| Authors | ||
| I. M. Ahmed; Magda N. Rajab | ||
| Forage Crops Research Department, Field Crops Res. Inst., ARC, Giza, Egypt | ||
| Abstract | ||
| This investigation was laid out during 2013 and 2014 seasons at Sids Agricultural Research Station, Agricultural Research Center, Egypt. The aim of this study were to (1) assess the magnitude of genetic variability parameters and heritability among sixteen exotic genotypes of Sudan grass as compared with two check varieties (Giza 1 and Giza 2) (2) determine correlation among forage yield and its component of Sudan grass genotypes (3) select the appropriate genotype (s) that are suited to Egypt environment. Significant mean squares due to genotypes, years and genotype × year interaction for fresh and dry forage yields at each cut and total yield were observed across the two years. Over the first and second seasons, the genotype IS 3214 was superior and significantly exceeded the check variety (Giza 2) by 6.3% for total fresh forage yield and the genotype IS 720 (Piper) was superior and significantly exceeded the check variety (Giza 1) by 6.6% for total dry forage yield. Tests of significance of mean squares showed significant differences for genotypes, years and genotype × year interaction for most of morphological characters. The genotype of Sudan grass IS 720 (Piper) gave the highest values of number of leaves and leaf /stem ratio while the genotype IS 3214 gave the highest values of number of tillers and leaf/stem ratio. In general phenotypic coefficient of variation (PCV) estimates were higher than genotypic coefficient of variation (GCV) estimates for all the studied characters. Heritability (H2%) estimates were generally moderate for some studied characters and recorded values 45.429% for total dry forage yield, 59.083 % for plant height but number of leaves, stem diameter and leaf/stem ratio were low and recorded 5.494, 9.523and 33.333% respectively. Fresh forage yield had high positive and significant correlation with dry forage yield, plant height and number of tillers (r= 0.926**, r= 0.613** and r=0.998**, respectively). Consequently, the genotypes IS 720 (Piper) and IS 3214 deserves further testing before being recommended for commercial use under Egypt conditions. | ||
| Keywords | ||
| Forage Sorghum; Sorghum sudanense; sudan grass; Exotic genotypes; Forage yield; Phenotypic and genotypic coefficient; heritability; genetic advance; correlation coefficient | ||
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