Abstract: A total of fourty nine recombinant inbred lines were evaluated for 16 traits using simple lattice design at Holeta and Debre Zeit in 2017 cropping season. All the traits measured over the locations showed highly significant differences among the lines except fertile tiller per plant, while the lines x locations interaction effect was highly significant for most of the traits measured. Both the genotypic and phenotypic correlation coefficients showed positive association of grain yield with most traits. Lodging index showed negative phenotypic correlation with most lodging related traits and positive with grain yield as well as phenological traits. Path coefficient analysis revealed that above ground biomass exerted the highest positive genotypic and phenotypic direct effect on grain yield. This study revealed that four recombinant inbred lines had higher yield than local and standard checks. RIL# 14 showed the highest grain yield and low lodging index, longer panicle, higher number of spikelets per panicle, as well as the highest above ground biomass than all recombinant inbred lines, which could be the base for future tef breeding program.

Keywords: Direct effect, Genetic association, Indirect effect, Phenotypic association, Tef, Traits.

Title: Correlation and Path Coefficient Analysis of Selected Semi-Dwarf Tef Recombinant Inbred Lines for Yield and Yield Component Traits

Author: Getahun Bekana, Nigus Belay

ISSN 2394-966X

International Journal of Novel Research in Life Sciences                                                    

Novelty Journals

Abstract: The experiment was executed to estimate genetic and phenotypic coefficient of variations of yield and its contribution traits of Ethiopian mustard (Brasica carinata A. Braun) landraces at Holetta agricultural research center, Ethiopia. Forty nine genotypes of Ethiopian mustard were analyzed using seed yield and its contributing traits that exist in these materials. The experiment was carried out in a simple lattice design. The analysis of variance showed that there were significant differences among genotypes for all traits studied. The significant difference indicates the existence of genetic variability among the landraces which is important for improvement. For yield component traits, high genotypic and phenotypic coefficients of variations were observed in seed yield kg/ha and oil yield. This shows that selection of these traits based on phenotype may be useful for yield improvement. The highest heritability in broad sense was recorded for  thousand seed weight(68.80%) followed by days to flowering (65.91%), stand percent (63.14%), days to maturity(60.43%), plant height (59.63%),oil content(50.33%),oil yield(44.84%), seed yield kg/ha(42.99%), and primary branches(34.20%). This suggests that large proportion of the total variance was due to the high genotypic and less environmental variance. Hence, a good progress can be made if some of these traits are considered as selection criteria for the improvement of yield and its contributing traits. In the correlation coefficient analysis, seed yield kg/ha showed positive correlation with oil content, oil yield, plant height and seed yield per plant. In this study, seed yield kg/ha, oil content, oil yield and primary branches were found to be the most important components for the improvement of seed and oil. The present study revealed the presence of considerable variability among genotypes for all traits. These results indicate that there is good opportunity to improve these traits using the tested genotypes.

Keywords: Ethiopian mustard, Genetic, phenotypic, heritability, correlation.

Title: ESTIMATION OF GENETIC AND PHENOTIPIC COFFICIENT OF VARIATION OF YIELD AND ITS CONTRIBUTING TRAITS OF ETHIOPIAN MUSTARD (Brasica carinata A.Braun) LANDRACES

Author: Fekadu Amsalu

ISSN 2394-966X

International Journal of Novel Research in Life Sciences                                                    

Novelty Journals

Abstract: The experiment was executed to test seed yield and agronomic traits performance of linseed in central highlands of Ethiopia. The experiment was laid out in Randomized Complete Block Design with three replications at Holetta, Bekoji, Kulumsa and Asasa Agricultural Research Centres. The results of combined analysis indicated that studied traits of genotypes for seed yield and agronomic performance of linseed traits were highly and significantly different for all traits compared. This revealed that there was a considerable magnitude of variability among the different genotypes for all the traits. Among the tested genotypes, PGRC/E 10306 X Chilalo Y/3(1797kg/ha), Omega X CI -1525/B/44(1586kg/ha), Omega X CI -1525/Y/44(1559kg/ha) and CI -1652 X Omega /B/53(1529kg/ha) scored first, second, third and fourth respectively, in seed yield. The overall agronomic performances of the tested linseed  genotypes in each location as explained by the locations mean indicated that Bekoji  has the highest seed yield followed by Holleta and Kulumsa with a mean yield of 2034,1558, and 1271 kg/ha, respectively. The mean performance of three genotypes PGRC/E 10306 X Chilalo Y/3 (692kg/ha), Omega X CI -1525/B/44 (599kg/ha) and Omega X CI -1525/Y/44 (595kg/ha) was first, second and third, respectively in mean oil yield. The mean agronomic performance of ten genotypes of linseed for six different traits studied showed a wide range and displayed a good distribution within the range. Date of flowering differences ranged from 87days to 91 days. On the other hand date of maturity differences ranged from 148 days to 159days and on other side plant height shown the differences ranged from 84cm to 100cm in the locations mean tested.

. Therefore these traits can serve as performance indices in genetic improvement of linseed yield and its agronomic component traits.

Keywords: agronomic traits, correlation, genetic variability, heritability, linseed, path analysis. 

Title: YIELD AND AGRONOMIC TRAITS PERFORMANCE OF LINSEED GENOTYPES (LINUM USITATISSIMUM L) IN CENTRAL HIGHLANDS OF ETHIOPIA

Author: Fekadu Amsalu

ISSN 2394-966X

International Journal of Novel Research in Life Sciences                                                    

Novelty Journals