Marker-Assisted Plant Breeding: Principles and Practices

Singh, B. D.; Singh, Ashok K.

doi:10.1007/978-81-322-2316-0

Cited by 231 publications

(192 citation statements)

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“…Days to flowering, plant height, hundred seed weight and number of branches on the main axis had moderate (>10 %) genetic advance for the comprehensive experiment, but low for the focused experiment; whereas all the other traits had low level of genetic advance in both experiments. Since high heritability does not always guarantee high genetic gain from selection, heritability should be considered combined with genetic advance in predicting selection for superior genotypes (Ali et al, 2002;Singh, 2000). In the present study, high estimate of GCV, heritability and genetic advance as percent of mean were observed only for grain yield while moderate heritability and genetic advance as percent of mean were observed for hundred seed weight, plant height and pods per plant.…”

Section: Estimates Of Variance Components Heritability and Genetic Amentioning

confidence: 43%

Genotype by trait biplot analysis to study associations and profiles of Ethiopian white lupin (Lupinus albus L.) landraces

Atnaf¹,

Tesfaye²,

Dagne³

et al. 2017

Aust J Crop Sci

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Limited information is available on trait relations and profiles of white lupin landraces in tropical growing conditions including Ethiopia. The objectives of this study were to understand the relationships among traits, and to document trait profile of Ethiopian white lupin landraces. As a component of this study, two sets of experiments were conducted. The first comprehensive experiment that consisted of 143 accessions collected from major lupin growing areas of Ethiopia was evaluated at Merawi and the second experiment that consisted of 12 selected accessions was evaluated across six locations. In both experiments, significant variations were observed among the accessions for most studied traits. Higher heritability and genetic advance as percent of mean was observed for grain yield, indicating the possibility of improving this trait through selection. Genotype by trait biplots captured 55% -66% of the variations due to genotype by trait interactions. Trait association and trait profile biplots were constructed for highland, mid altitude and low land environments, and across all locations. Different patterns of associations and genotype (accession) by trait interactions were observed in different environments. However, genotype by trait biplots consistently indicated that grain yield had positive associations with most of the traits; especially, with number of pods per plant, plant height and seeds per pod. The study identified some accession with desirable performances as good for specific trait and/or trait groups that could be considered as sources of genes for the traits they have best performed. G8 consistently showed higher grain yield, G2 had higher number of branches and higher number of seeds per plant, G7 had more number of pods per plant and larger seed size and G4 produced longer pods. The accessions used in this study were found to be useful sources for genetic variability for future breeding that targets to improve grain yield and other agronomic traits of white lupin in Ethiopia.

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Section: Estimates Of Variance Components Heritability and Genetic Amentioning

confidence: 43%

Genotype by trait biplot analysis to study associations and profiles of Ethiopian white lupin (Lupinus albus L.) landraces

Atnaf¹,

Tesfaye²,

Dagne³

et al. 2017

Aust J Crop Sci

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“…Desawi et al (2014) also reported relatively higher estimates of heritability for DF, DM and CFP and higher estimates of GAM for CPP, NPB, TSW and SY. According to Singh (2001), heritability values greater than 80% are very high, values from 60 to 80% are high and values from 40 to 59% are medium and values less than 40% are low. High heritability value was reported by Sumathi and Muralidharan (2010) for days to maturity.…”

Section: Discussionmentioning

confidence: 99%

Genetic Variability, Heritability and Genetic Advance for the Phenotypic Traits in Sesame (<i>Sesamum indicum</i> L.) Populations from Ethiopia

Hika¹,

Geleta²,

Jaleta³

2015

Sci. Technol. Arts Res. J.

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Sesame (Sesamum indicum L.) is an important crop produced in Ethiopia for oilseed production and it ranks first in total production from oil crops determine the extent of genetic variability, heritability and genetic advance among 64 sesame populations from Ethiopia. The populations were grown in 8 x 8 simple lattice design in Jima Arjo District, East Wollega Zone, Ethiopia during 2013. Data were collected for 11 morpho agronomic traits and analyzed using SAS software version 9.0. The results showed that there were highly significant differences among the populations for all characters studied. estimates for GCV and PCV were observed in the populations for NPB, BPP, SY, BY and HI which could indicate the populations are variable. High to very high estimates for heritability values were observed for all traits except TSW which indicated that for breeding activities and can be utilized in subsequent selections based on phenotypic expressions of individual plants for specific traits. And it further indicates the limited influence of the environment on the phenotypic expressions of the traits. Further computation for GAM indicated that high estimates were found for NPB, BPP, BY, SY and HI which could further confirm the easy of selections based on phenotypic traits after cycle of selection using 5 % selection intensity. This study generally indicated that there were significance genetic variations among the populations. Thus, there is enormous opportunity of using the germplasm in the improvement program for employing different breeding techniques for selection of varieties for significant increment in economic trait like seed yield and percent oil content.

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“…Broad-sense heritability values were recorded as ranging from 62.42% for the number of fingers to 96.35% for days to 50% maturity, as indicated in Table 4. According to [23], if the heritability estimates of a character are 80% or above, the selection of genotypes for a given trait could be easy, which implies these characters' capability of responding to selection pressure. However, for characters with smaller percentage values of broad-sense heritability of 40% or less, the selection of character for further screening may be impractical because of the high environmental impacts on the genotypes, which suppress the gene expression for that particular trait.…”

Section: Mean and Range Valuesmentioning

confidence: 99%

Phenotypic characterization of Ethiopian finger millet accessions (Eleusine coracana (L.) Gaertn), for their agronomically important traits

Tesfaye

Mengistu

2017

Acta Universitatis Sapientiae, Agriculture and Environment

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Abstract. Cereal finger millet (Eleusine coracana (L.) Gaertn) is one of the most promising vital crops of Asia and Africa in the face of climate change. It has a capacity to adapt to extreme environmental conditions and can be grown under a wide range of wider agroecology. It is believed to be originated in the highlands of Ethiopia and then disseminated across the globe. It is mainly cultivated as dietary staple food for humans, animal feeds and also used as medicinal crop. Though finger millet is recognized as the most important staple crop, particularly for the poor people in dry and semidry areas, it has been neglected and given little concern in mainstreaming the crop for its improvement research.

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Marker-Assisted Plant Breeding: Principles and Practices

Cited by 231 publications

References 0 publications

Genotype by trait biplot analysis to study associations and profiles of Ethiopian white lupin (Lupinus albus L.) landraces

Genotype by trait biplot analysis to study associations and profiles of Ethiopian white lupin (Lupinus albus L.) landraces

Genetic Variability, Heritability and Genetic Advance for the Phenotypic Traits in Sesame (<i>Sesamum indicum</i> L.) Populations from Ethiopia

Phenotypic characterization of Ethiopian finger millet accessions (Eleusine coracana (L.) Gaertn), for their agronomically important traits

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