Genetic Analysis of Performance of Maize Inbred Lines Under Drought Stress

Meseka, Silvestro; Menkir, Abebe; Ajala, S. O.

doi:10.1080/15427528.2011.592570

Cited by 46 publications

(78 citation statements)

References 16 publications

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“…Furthermore, non-additive gene effect was predominant in the control of grain yield, anthesis-silking interval, leaf chlorophyll content and ear aspect while days to silking, leaf senescence and plant height were influenced mainly by additive gene effects. Similar results on grain yield were earlier reported by Betràn et al (2003), Gama et al (2002), Mosisa et al (2008), Makumbi et al (2011), Meseka et al (2006, 2013, and Ndhlela (2012). However, these results are contradictory to those of Below et al (1997), Kling et al (1997), Badu-Apraku et al (2011, 2013, Ifie et al (2014) and Tamilarasi et al (2010) who reported predominance of additive gene effects compared to non-additive gene effects for grain yield under low N. The contradictory results might be due to the difference in environments (N stress level) under which the genotypes were tested or genotypic differences among sets of genotypes included in the studies as suggested by Mosisa et al (2008).…”

Section: Discussionsupporting

confidence: 81%

“…Genetic studies have been conducted on maize genotypes under low N using different sources of genetic material (Badu-Apraku et al, 2013;Betràn et al, 2003;De Souza et al, 2008;Makumbi et al, 2011;Meseka et al, 2006;Meseka et al, 2013;Miti, 2007;Pswarayi & Vivek, 2008). However, information on gene action conditioning grain yield under low N has been contradictory.…”

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confidence: 99%

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Combining Ability and Gene Action of Tropical Maize (Zea mays L.) Inbred Lines under Low and High Nitrogen Conditions

Noëlle¹,

Richard²,

Gracen³

et al. 2017

JAS

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This study was conducted to determine combining ability and gene action in elite maize inbred lines under low and high soil nitrogen conditions for hybrid breeding. Forty two tropical inbred lines (three testers and 39 lines) were crossed using line × tester mating design. The resulting 117 F1 hybrids, along with 4 hybrids used as checks, were evaluated using an 11 × 11 lattice design with two replications for grain yield and yield related traits during the 2012 and 2013 cropping seasons at two sites (Mbalmayo and Nkolbisson). Results revealed predominant additive gene effect under high soil nitrogen (N) conditions. Non-additive gene effect influenced grain yield under low soil and thus could be exploited for hybrid development. Under high N conditions inbred lines CLYN246, J16-1, CLWN201, TL-11-A-1642-5, CLQRCWQ26 and 1368 were good general combiners. Lines CML 343, ATP S6 20-Y-1, CLWN201, 1368, ATP S9 30 Y-1 and CLQRCWQ26 were good general combiners for grain yield under low N. They could be used to develop low N tolerant varieties. Different single cross hybrid combinations were identified for high grain yields under both low and high N conditions. The selected lines and single cross hybrids are a useful source of valuable genetic material for future maize hybrid breeding or direct production under low N.

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Section: Discussionsupporting

confidence: 81%

mentioning

confidence: 99%

Combining Ability and Gene Action of Tropical Maize (Zea mays L.) Inbred Lines under Low and High Nitrogen Conditions

Noëlle¹,

Richard²,

Gracen³

et al. 2017

JAS

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“…This may indicate that different physiological mechanisms are associated with high yield in favorable conditions and high yield in unfavorable conditions (Blum, 1997;Ccccarelli, 1996). Variation for quantitative characters is under the control of many genes and the contribution of the genes can differ among environments (Basford and Cooper, 1998;Delacy et al, 1996 andMeseka et al,2006). This conditional contribution of genes is the basis of genotype-by-environment (G x E) interactions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Low-N Stress on Performance and Combining Ability for Grain Yield and Quality Traits of Wheat Parents and their F2 Progenies

2017

American Research Journal of Agriculture

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Developing high-yielding wheat varieties under low-N requires adequate information on the nature of combining ability of available genotypes and the types of gene actions involved in the expression of grain yield and quality traits under such low-N stress. The objective of present study was to get information about performance and general (GCA) and specific (SCA) combining ability variances and effects for grain yield and quality traits of wheat to help its improvement under low-N environment. Two experiments were conducted during two seasons, the 1 st under high-N (75 kg N/fed) and the 2 nd under low-N (0 kg N/fed) using a randomized complete block design with three replications. The entries included six Egyptian wheat genotypes differing in low-N tolerance and their F 2 diallel crosses (without reciprocals). Data analyzed across seasons indicated that L25, L26 and L27 had high values of grain yield and quality traits and showed the best GCA effects for these traits. Under low-N, the best F 2 crosses in per se performance and in SCA effects were L25 x L27, L25 x L26 and L26 x G168. Mean squares due to both GCA and SCA were significant under both low-N and high-N for all studied traits, but the magnitude of GCA was greater than SCA, indicating that additive is more important than non-additive genetic variance in controlling the inheritance of all studied grain yield and quality traits. The results indicated that under low-N and high-N, the mean performance of a given parent is an indication of its general combining ability and the mean performance of a given F 2 cross is an indication of its specific combining ability effects for all studied grain yield and quality traits.

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“…The magnitude of correlation has been reported to be higher under drought stress conditions in comparison to non-stressed conditions (Betrȃn et al, 2003a;Ertrio et al, 2013). However, other studies (Oyekunle and Badu-Apraku, 2014;Meseka et al, 2006) have reported low correlations between inbred per se and hybrid performances. The use of grain yield component traits that have higher heritability, particularly rate of grain filling of the inbred lines, has been reported as a good predictor of maize hybrid performance (Prado et al, 2013).…”

Section: Per Se Performance and Combining Ability Of Inbred Parentsmentioning

confidence: 91%

“…In these studies strong positive correlations between inbred per se and hybrid grain yield performance under drought stress and non-stressed conditions have been reported in subtropical and tropical environments (Betrȃn et al, 2003a;Berhanu et al, 2013;Oyekunle and Badu-Apraku, 2014;Meseka et al, 2006). The efficiency of prediction based on the inbred per se performance and GCA effect varies depending on the relative importance of additive genetic variance, which is related to the level of genetic variation between the inbred parents (Betrȃn et al, 2003a;Reif et al, 2007) and environmental differences (Gowda et al, 2012).…”

Section: 2introductionmentioning

confidence: 99%

Genetic differentiation, heterotic performance and grain yield determinate traits of locally adapted sorghum genotypes in contrasting environments in Ethiopia

Mindaye¹

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The increase superiority in characteristics such as size, growth rate, fertility, yield and general fitness of hybrids produced by crossing genetically diverse inbred parents is well established in many plant and animal species. This phenomenon has been exploited to produce commercial cultivars in a range of crop species including sorghum.In sorghum F1 hybrid seed is produced by crossing genetically distinct restorer (R lines) and cytoplasmic male sterile seed parent (A lines). In the developed world commercial cultivars are almost exclusively F1 hybrids and are increasingly being used in the developing countries. In spite of the yield advantage in some circumstances, however, hybrids developed using introduced parental lines have not been adopted by Ethiopian farmers primarily because of the extra cost of purchasing seed has not been outweighed by the benefits of introduced hybrids in particular the lack of farmer preferred traits such as tall stature and larger grain size. The development of hybrids using locally adapted genotypes could have the potential to overcome the shortcomings of introduced hybrids. However, the complex cytoplasmic male sterility system and prevalence of restorer genes complicate the development of new Additionally, the hybrids derived from these locally adapted genotypes will have the benefit of containing farmers preferred traits. The groups most divergent from the introduced A/B lines were the Ethiopian landraces adapted to highland and intermediate agro-ecologies and a subset of lowland adapted genotypes. These genotype groups were also grouped distinctly from the introduced R lines, and hence provide highly divergent parental lines for hybrid development in Ethiopia.The performance and magnitude of heterosis of 139 F1 hybrids, derived from introduced seed parents crossed with selected locally adapted genotypes and introduced R lines, were evaluated in three contrasting environments. The lowland adapted hybrids displayed a mean better parent heterosis (BPH)iii of 19% and a 29% increase in grain yield, on average, in comparison to the hybrids derived from the introduced R lines. In addition, these hybrids were also found to be superior in plant height and grain weight. The mean BPH for grain yield for the highland adapted hybrids was 16% in the highland and 52 % in the intermediate, in addition to increased grain weight. The magnitude of heterosis between the three hybrid groups reflected the genetic distance between the genotype groups with the A/B lines.These results highlight the potential of locally adapted genotypes for the exploitation of heterosis in Ethiopia.In order to understand the genetic basis of increased hybrid performance, the relationship between yield component traits was assessed and the genetic variance for each subset of hybrid group was partitioned into parental lines and their interaction effects. In the lowland environment, increase in grain number and grain weight contributed to increased yield of the lowland adapted hybrids in comparison to the intro...

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Genetic Analysis of Performance of Maize Inbred Lines Under Drought Stress

Cited by 46 publications

References 16 publications

Combining Ability and Gene Action of Tropical Maize (Zea mays L.) Inbred Lines under Low and High Nitrogen Conditions

Combining Ability and Gene Action of Tropical Maize (Zea mays L.) Inbred Lines under Low and High Nitrogen Conditions

Effect of Low-N Stress on Performance and Combining Ability for Grain Yield and Quality Traits of Wheat Parents and their F2 Progenies

Genetic differentiation, heterotic performance and grain yield determinate traits of locally adapted sorghum genotypes in contrasting environments in Ethiopia

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