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Articles by Shushay Chernet
Total Records ( 2 ) for Shushay Chernet
  Shushay Chernet , Derbew Belew and Fetien Abay
  The aim of the study was to estimate the extent of genetic variability and association among characters. Thirty six tomato genotypes were evaluated at Humera Agricultural Research Center, Northern Ethiopia, during 2010/11 in 6x6 simple lattice design with two replications. Variance component method was used to estimate genetic variance, heritability and genetic advance. Highly significant difference (p<0.01) was observed among the tested genotypes for all the characters studied. Highest phenotypic (79.13 and 74.66) and genotypic coefficient of correlation (78.47 and 73.27) were observed for number of matured fruits per plant and fruit set percentage. The highest heritability estimate was recorded for number of matured fruits per plant (98.34) and the least for number of primary branches (47.36%). Yield per hectare had highest positive and highly significant phenotypic correlation with weight of fruits per plant (rp = 0.89), fruits per plant (rp = 0.85) and fruit set percentage (rp = 0.78). While it showed negative and highly significant phenotypic correlation with days to 50% fruiting (rp = -0.78) and days to maturity (rp = -0.68). The study generally, revealed the presence of adequate variability which can be exploited through direct selection or hybridization.
  Shushay Chernet and Haile Zibelo
  The objective of the study was to evaluate nationally released tomato varieties for fruit yield and yield components in western Tigray, Northern Ethiopia. Nine tomato varieties collected from Melkassa Agricultural Research Center were evaluated in randomized complete block design in three replications. The study was conducted in Humera Agricultural Research Center experimental site during 2012 under irrigation condition. Tukey’s test and Pearson correlation were used to compare treatment means and estimate association of characters. All the traits except number of flowers per plant and number of fruit per plant showed highly significant (p<0.001) difference among the varieties. Melkasalsa scored the highest number of fruits per plant (100), highest fruit yield per plant (2.491 kg) and marketable fruit yield (56.07 t ha-1) while, the minimum (17.89 t ha-1) marketable fruit yield was recorded from Bishola variety. Correlation studies showed that fruit yield per hectare had a very highly significant positive correlation with fruit yield per plant (r = 0.903), number of fruits per plant (r = 0.807), number of fruit clusters per plant (r = 0.850) and shape index (r = 0.501) indicated selection based on trait improve fruit yield per hectare. While, it showed significant negative correlation with fruit equatorial diameter (r = -0.478).
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