Habtamu Zelleke's research while affiliated with Haramaya University and other places

Publications (26)

Article
Full-text available
Common bean (Phaseolus vulgaris L.) productivity is low in major growing regions of Ethiopia mainly due to drought, caused by low and erratic rainfall. A field experiment was carried out at Gofa in Southern Ethiopia, to assess genetic variability for drought resistance in forty-nine small red seeded common bean genotypes of both local and foreign o...
Article
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Abstract: Combining ability is the genotype's ability to pass the desired character to the offspring. Hence, combining ability information is needed to determine the crossed pairs in the formation of hybrid varieties. Therefore, this study was conducted to estimate general and specific combining ability effects of maize inbred lines for yield and y...
Article
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Determination of heterosis in maize hybrids is necessary for identification of superior F1 hybrids for breeding programs. Therefore, this study was conducted to estimate the amount of standard heterosis for grain yield and related traits in order to identify potential hybrid for future breeding schemes. Eight maize inbred lines were mated through a...
Article
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The current study was conducted using 105 hybrids resulted from diallel crosses of 15 early maturing maize inbred lines crossed in diallel mating system (Griffing's Method IV, Model I) along with three standard checks evaluated using Alpha-Lattice Design with two replications during the 2011 main cropping season at Melkassa Agricultural Research Ce...
Article
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Field experiments were conducted during 2010/2011 to determine the interrelationship and path coefficient analysis of growth characters to seed yield. The experiment was laid out in 7 x 7 triple lattice designs at Haramaya University research farm, Dire Dawa. Seed yield exhibited positive and significant environmental correlation with number of pri...
Article
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Cowpea (Vigna unguiculata (L.) Walp.) is a grain legume commonly grown and consumed in many parts of the tropics and subtropics. The general grain yield of cowpea especially in marginal areas is still low and no single variety can be suitable for all growing conditions. Exploiting genetic variability to identify high yielding genotype is one of the...
Article
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Objective: A study to estimate better parent and economic heterosis in an 8x8 diallel crosses of common beans (Phaseolus Vulgaris L.) was undertaken at Mandura, North Western Ethiopia. Methodology and Results: Eight parents and their 28 F1 diallel crosses were grown in a randomized complete block design. Yield and its components, architectural, and...
Article
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Thirteen (13) potato genotypes were evaluated for genetic variability and association of agronomic characters among themselves and tuber yield. The study aimed to find out the genetic variability, and interrelationships among different characters in potato. The plot design used for the experiment was a randomized complete block design with three re...
Article
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Inheritance of primary yield component traits of common beans (Phaseolus Vulgaris L.): Number of seeds per pod and 1000 seed weight in an 8 × 8 diallel cross population Thirty six (36) genotypes (eight parents and 28 F 1 diallel crosses) were grown in randomized complete block design with two replicates during 2006 at Mandura, North western Ethiopi...
Article
Common bean ( Phaseolus vulgaris L.) is grown in regions where water deficit during reproductive development significantly reduces yield. The objective of this study was to assess morpho-physiological response to post-flowering drought stress in small red seeded common bean genotypes of diverse origin under field conditions. Forty-nine genotypes we...
Article
Dawro zone is one of the least covered areas in agricultural research in Ethiopia. To enhance the agricultural productivity of the area, technologies developed in other areas need to be assessed in the context of Dawro agricultural systems. Therefore, the objectives of this study were to assess farmers' preference and performance of released common...
Book
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The objectives of the study were to estimate the genetic variability, associations among characters, and to estimate genetic divergence. Seed yield had positive and significant correlation with number of pod per plant, biomass yield and number of seed per pod. Path analysis showed biomass yield and number of pods per plant could be used as an indir...
Article
Full-text available
Considering the potential threat of grey leaf spot (GLS) to maize production, the national maize research program of Ethiopia has been screening local and exotic maize genotypes against the disease as the commercially available and advanced inbred lines susceptible to GLS. This experiment was, therefore, conducted to investigate the general (GCA) a...
Article
Maize cultivars vary in their response to variable environmental conditions. Twenty maize cultivars were tested at nine locations in Ethiopia (1100 - 2240 masl) in randomized complete block design with three replications for two years to study the nature and magnitude of genotype x environment (G x E) interaction and phenotypic yield stability of t...
Article
The local maize varieties are inefficient in transferring assimilates to the ear sink and as a result they are low yielding. To replace these low yielding local varieties by high yielding ones, different breeding methods have been used in Ethiopia. This study was undertaken to compare improved maize varieties released in Ethiopia for their harvest...
Article
Full-text available
Information on heterosis and combining ability of adapted maize (Zea mays L.) inbred lines is essential to maximize their use for variety development. This study was conducted to determine heterosis and combining ability of selected inbred lines for yield and yield components. Eight inbred lines were crossed in a diallel mating system. The crosses...
Article
Knowledge of associations among yield and yield related traits is important to plant breeders for developing selection criteria. One hundred ninety F 8 recombinant inbred lines (RILs) of tef (Eragrostis tef) developed from an intra-specific cross between cvs DZ-01-974 and DZ-01-196, were field evaluated at two locations (Debre Zeit and Melkassa) in...
Article
Grey leaf spot (GLS) caused by Cercospora zeae-maydis has become one of the most significant yield-limiting diseases of maize in Ethiopia. Evaluation and selection of local and exotic maize genotypes by the National Maize Improvement Program of Ethiopia has resulted in the identification of entries with fleck-type lesions (resistant reaction). Howe...
Article
Full-text available
Grey leaf spot (GLS) caused by Cercospora zeae-maydis has become one of the most significant yield-limiting diseases of maize in Ethiopia. Evaluation and selection of local and exotic maize genotypes by the National Maize Improvement Program of Ethiopia has resulted in the identification of entries with fleck-type lesions (resistant reaction). Howe...
Article
Maize genotypes vary in their response to variable environmental conditions. Twenty genotypes were tested at nine locations in Ethiopia (1,100-2,240 masl) in the 1998 cropping season to study their phenotypic yield stability. Analysis of variance and stability analysis were computed. Variances due to genotypes, environments, and G x E interaction w...

Citations

... In Ethiopia, the common bean has diverse production and utilization in the major production areas. For instance, the white pea bean types are largely produced in the Ethiopian Great Rift Valley mainly for export markets (Yayis et al., 2011). While, the southern bean producing zones that consist of Sidamo, Wolaita and Gamo Gofa zones produce red and mottled bean types mainly for household consumption. ...
... Therefore, the existence of sufficient genetic variability among crosses for the trait of interest enables the breeder to conduct appropriate selection of the most desirable cross combinations. The results were comparable with the earlier view of Woldu [20] and Tefera et al. [16] in their combining ability and heterosis studies on maize. ...
... In contrast, the cross exhibited positive and highly significant SCA effect towards undesirable direction of lateness. As a result, those crosses with high SCA effects had a tendency to enhance late maturity, while crosses that had lower SCA effect regarded as a propensity to enhance early maturity (Table-4).The results were well supported by the findings of former investigators (Dufera, 2017;Tolera et al.,2017 andWoldu et al.,2020). ...
... This might be due to the low genetic variability of these traits or due to environmental factors. Shengu et al. (2016), Aci et al. (2018) obtained similar results on anthesis silking interval. Markovic et al. (2011), Bartaula et al. (2019) obtained non-significant results on cob length. ...
... Days to flowering and days to maturity were recorded as the number of days from planting to when 50% of plants in a pot had at least one open flower and when 75% of plants in a pot had at least 90% of their pods dried, respectively (Rezene et al., 2012). The destructive sampling was done at midpod filling and harvest. ...
... GLS is currently recognised as one of the most maize damaging diseases in the region, especially in areas with warm temperatures and prolonged relative humidity (Wegary et al., 2003, Derera et al., 2008, Ward et al., 1999, Lyimo et al., 2012, Meisel et al., 2009, Paul and Munkvold, 2005. ...
... The information that plant height, represented herein by the length of the longest stem, is more strongly associated with the tuber mass than characters that measure the leaf mass and number, and the leaf area index itself agree with Silva et al. (2020). The positive relationship between plant height and tuber yield was also found by Khayatnezhad et al. (2011), andFekadu et al. (2013). In addition, plant vigor has also been reported to have a positive effect on tuber yield (Pereira et al., 2017). ...
... and gray leaf spot in maize caused by Cercospora zea-maydis Tehon & Daniels has been attributed to multiple genes (Maroof et al. 1996;Smith and Campbell 1996;Coates and White 1998;Nilsson et al. 1999;Setiawan et al. 2000). Crowley et al. (2002) and Wegary et al. (2003) identified a preponderance of additive genes associated with resistance to gray leaf spot in corn. Knowledge about the number of genes controlling a trait and their heritable behavior helps breeders to determine a suitable approach before starting any breeding project (Fehr 1987). ...
... Similarly, T4 showed positive and highly significant mean GCA effects for both PH and EH, whereas T2 and T3 revealed negative and highly significant mean GCA effects for these traits. In line with the present study, Demissew et al. (2011) and Tolera et al. (2017) found significant positive and negative GCA effects for PH and EH in inbred lines and testers they studied. Among the inbred lines, only L1 and L11 were with significantly negative mean GCA effects for EA and PA respectively. ...
... Others authors described that inbreeding program, hybrids perform better than checks could be used as a commercial production [11,16]. This result reassures the earlier findings of several academics [9,5,58,46,36,37,16,20,56,30]. The crosses such as, L1 xT3 and L6xT1 showed zero and non-significant over commercial variety heterosis which indicates that the hybrids and the commercial check gave the same or equal amount of yield with the variety. ...