GENETIC ANALYSIS OF QUALITATIVE AND QUANTITATIVE TRAITS AMONG PROGENIES OF ENSET CLONES ORIGINATED FROM SOUTHERN ETHIOPIA

The present cultivated enset (Ensete ventricosum) clonal landraces in Ethiopia originated from few wild progenitors. However, enset has a mixed mode of reproduction in which, the wild enset reproduces sexually through seeds, while cultivated enset is generally propagated vegetatively. The objectives of this study were to determine the genetic structure of enset cultivars through genetic analysis of qualitative morphological traits and estimate their genetic variability by evaluating the quantitative agronomic traits data generated from progenies of cultivated and wild enset genotypes. Hence, seeds collected from six cultivated and four wild enset genotypes were used for this study. Data on four qualitative and six quantitative morphological traits were recorded from the progenies of the 10 enset genotypes. Progenies of seven enset genotypes segregated in a 3:1 segregation ratio while progenies of the remaining genotypes segregated differently for the qualitative traits considered. With regard to the quantitative traits, the progenies of the 10 enset genotypes differed significantly for five of the six traits except pseudostem length. The cultivated clones, in general performed better than that of the wild types. Moderate heritability (h2b) estimates and high genetic advances were obtained for leaf length (0.38, 62.0%), pseudostem circumference (0.35, 78.5%), and plant height (0.30, 19.1%) indicating selection for these traits indirectly improves economic yield of enset clones. This study demonstrated the possibility of creating genetic variation through selfing the existing enset genotypes for traits of interest and making improvements either through selection or crossing the elite types to develop novel enset cultivars.

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Inheritance of Qualitative Morphological Traits and Variation of Quantitative Agronomic Traits of Enset (Ensete Ventricosum (Welw.) Cheesman) Clones Obtained From Wolaita Zone, Southern Ethiopia

10.20944/preprints202105.0606.v1 ◽

2021 ◽

Author(s):

Mesfin Kebede Gessese ◽

Abraham Bosha

Keyword(s):

Mixed Mode ◽

Morphological Traits ◽

Quantitative Traits ◽

Agronomic Traits ◽

Study Data ◽

Morphological Data ◽

Southern Ethiopia ◽

Genetic Structures ◽

Wild Progenitors ◽

Better Than

The present cultivated enset clonal landraces in Ethiopia originated from few wild progenitors. However, enset has a mixed mode of reproduction in which, the wild enset reproduces sexually through seeds, while cultivated enset is generally propagated vegetatively. The objective of this study was to understand the genetic structures of enset cultivars and estimate their genetic variability by evaluating the morphological data generated from progenies of cultivated and wild enset clones. Hence, seeds collected from six cultivated and four wild enset genotypes were used for this study. Data on four qualitative and six quantitative morphological traits were recorded from the progenies of the 10 enset genotypes. Progenies of seven enset genotypes segregated with 3:1 genetic ratio while progenies of the remaining genotypes segregated differently for the qualitative traits considered. With regard to the quantitative traits, the progenies of the 10 enset genotypes differed significantly for five of the six traits except pseudostem length. Generally the cultivated clones performed better than the wild types. This study demonstrated the possibility of creating genetic variation through selfing of the existing clones of enset for traits of interest and makes improvements either through selection or crossing the elite types to develop novel cultivar

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Comparative genetic analysis of quantitative traits in sunflower (Helianthus annuus L.). 2. Characterisation of QTL involved in developmental and agronomic traits

Theoretical and Applied Genetics ◽

10.1007/s00122-003-1237-9 ◽

2003 ◽

Vol 107 (1) ◽

pp. 181-189 ◽

Cited By ~ 34

Author(s):

P.-F. Bert ◽

I. Jouan ◽

D. Tourvieille de Labrouhe ◽

F. Serre ◽

J. Philippon ◽

...

Keyword(s):

Genetic Analysis ◽

Helianthus Annuus ◽

Quantitative Traits ◽

Agronomic Traits ◽

Helianthus Annuus L ◽

Comparative Genetic Analysis

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Genetic divergence of Nigerian and Indian pearl millet accessions based on agronomical and morphological traits

Journal of Agricultural Sciences Belgrade ◽

10.2298/jas1702115a ◽

2017 ◽

Vol 62 (2) ◽

pp. 115-131

Author(s):

David Animasaun ◽

Joseph Morakinyo ◽

Rama Krishnamurthy ◽

Oba Mustapha

Keyword(s):

Plant Height ◽

Pearl Millet ◽

Morphological Traits ◽

Genetic Relatedness ◽

Agronomic Traits ◽

Crop Improvement ◽

Principal Component ◽

Leaf Length ◽

Leaf Width ◽

Number Of Leaves

The study assessed the genetic diversity of pearl millet accessions grown in Nigeria and India based on morpho-agronomic traits in order to identify genotypes with superior characters which could be utilized in breeding programmes. Twenty-four pearl millet accessions were grown and evaluated for agronomic and morphological traits during the dry and wet seasons of 2015-2016. Data collected on the accessions using standard descriptors were analysed statistically. IP22281 had the highest mean plant height (108.90 cm) while NGB00531 recorded the lowest (61.02 cm). Significant intra-specific variation existed in number of leaves per plant, leaf length, leaf width, number of nodes and internode length, however, stem girth was similar for the accessions. Tillering was generally poor with the highest value (1.60 tillers per plant) found in NGB00531. A significant positive correlation occurred between plant height, number of leaves, leaf length and leaf width. Panicles emerged between 44 and 56 days and NGB00548 had the shortest maturity time. Also, panicle length and peduncle diameter varied significantly for the accessions. The highest grain yield and 1000-grain weight were recorded in NGB00616 and the lowest yield and weight were recorded in IP22269. The principal component analysis grouped the accessions into four clusters, comprising mixtures of Nigerian and Indian members. Similarly, the dendrogram grouped the accessions into two main groups which were sub-divided into smaller clusters with accessions from Nigeria and India in the same cluster. The study concludes that variations in morpho-agronomic and yield characters among the accessions studied could be harnessed for crop improvement. The clustering pattern of these accessions indicated their genetic relatedness, possibly from the same progenitor, but separation by geographical or ecological isolation mechanisms.

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Independent segregation of qualitative traits and estimation of genetic parameters and gene action for some quantitative traits in guar (Cyamopsis tetragonoloba L. Taub.)

Indian Journal of Genetics and Plant Breeding (The) ◽

10.31742/ijgpb.80.2.9 ◽

2020 ◽

Vol 80 (02) ◽

Author(s):

Hans Raj Mahla ◽

Ramavtar Sharma ◽

Sushil Kumar ◽

Kishor Gaikwad

Keyword(s):

Quantitative Traits ◽

Genetic Parameters ◽

Gene Action ◽

Agronomic Traits ◽

Single Gene ◽

Flower Colour ◽

Segregation Ratio ◽

Cyamopsis Tetragonoloba ◽

Qualitative Traits ◽

Leaf Hairiness

Current study was undertaken to elucidate the inheritance qualitative traits namely, flower colour and leaf hairiness in two F2 populations comprising of 194 and 99 individuals with reference to yield and agronomic traits along with genetic parameters. The violet colour of flowers and leaf hairiness were dominant over white flower and smooth leaves, respectively. The 2-test revealed independent single gene inheritance for both the traits with joint segregation ratio of 9:3:3:1 in F2. Except for no. of pods per cluster and pods per plant, both parents (Smooth 25 and HG2-20) exhibited significant (p less then 0.05) differences for traits under investigation. A higher estimate of phenotypic coefficient of variance (PCV) than genonotypic coefficient of variance (GCV) was recorded for all the characters except test weight and clusters on branches. The heritability ranged from 24.36% (seeds per pod) to 92.32% (clusters on branches). Gene action as per skewness indicated that both duplicate and complementary interactions were playing role in the development of various traits, whereas, inheritance analysis as per kurtosis suggested that traits were oligogenic. Eventually, it can be concluded that high GCV, appearance of transgressive segregants and involvement of fewer major genes in defining the quantitative traits including yield, provided an opportunity for their genetic improvement.

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Performance Evaluation of Grain Yield and Yield Related Traits in Common bean Genotypes at Yabello and Abaya, Southern Ethiopia

Journal of Aridland Agriculture ◽

10.25081/jaa.2017.v3.3365 ◽

1970 ◽

Vol 3 ◽

pp. 28-34

Author(s):

Ejigu Ejara, Wassu Mohammed, Berhanu Amsalu ◽

Zinash Misgana, Mulatu Gabisa, Ganane Tasama

Keyword(s):

Grain Yield ◽

Common Bean ◽

Agronomic Traits ◽

Southern Ethiopia ◽

Design Data ◽

Nutrition Security ◽

Lattice Design ◽

Food And Nutrition ◽

Borana Zone ◽

Home Consumption

Common bean is among the major crops grown in southern Ethiopia including Borana zone where the majority of the farmers are Agro-pastoralist and produce the crop mainly for home consumption. The area has potential to the production of common bean for food and nutrition security as well as export commodity. However, scarcity of varieties that fit to the environment is one of the major constraints of production. Therefore, this experiment was conducted to evaluate 36 common bean genotypes including seven released varieties to evaluate performance of genotypes for yield and agronomic traits. The field experiment was conducted in 2015 at two locations (Abaya and Yabello) and genotypes were planted in triple lattice design. Data were collected on yield and important agronomic traits. Analysis of variance computed for individual locations and combined analysis over locations revealed significant variations among genotypes for all traits. Moreover, 16.67% of the genotypes had mean grain yield greater than the best performing released variety across locations and the genotypes showed a grain yield as high as 3.25 tons ha-1. Based on results of this study it is recommended to test the high yielding and early maturing genotypes at many locations to develop preferred varieties across many locations.

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Faculty Opinions recommendation of Genetic analysis of quantitative traits in the Japanese population links cell types to complex human diseases.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.732604093.793542393 ◽

2018 ◽

Author(s):

Anne Kwitek

Keyword(s):

Genetic Analysis ◽

Japanese Population ◽

Quantitative Traits ◽

Cell Types ◽

Human Diseases

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Supporting Physiological Trait for Indirect Selection for Grain Yield in Drought-Stressed Popcorn

Plants ◽

10.3390/plants10081510 ◽

2021 ◽

Vol 10 (8) ◽

pp. 1510

Author(s):

Samuel Henrique Kamphorst ◽

Gabriel Moreno Bernardo Gonçalves ◽

Antônio Teixeira do Amaral Júnior ◽

Valter Jário de Lima ◽

Kátia Fabiane Medeiros Schmitt ◽

...

Keyword(s):

Grain Yield ◽

Multiple Regression ◽

Morphological Traits ◽

Vegetation Index ◽

Agronomic Traits ◽

Indirect Selection ◽

Leaf Angle ◽

Water Restriction ◽

Leaf Greenness ◽

Selection Of

The identification of traits associated with drought tolerance in popcorn is a contribution to support selection of superior plants under soil water deficit. The objective of this study was to choose morphological traits and the leaf greenness index, measured on different dates, to estimate grain yield (GY) and popping expansion (PE), evaluated in a set of 20 popcorn lines with different genealogies, estimated by multiple regression models. The variables were divided into three groups: morpho-agronomic traits—100-grain weight (GW), prolificacy (PR), tassel length (TL), number of tassel branches, anthesis-silking interval, leaf angle (FA) and leaf rolling (FB); variables related to the intensity of leaf greenness during the grain-filling period, at the leaf level, measured by a portable chlorophyll meter (SPAD) and at the canopy level, calculated as the normalized difference vegetation index (NDVI). The inbred lines were cultivated under two water conditions: well-watered (WW), maintained at field capacity, and water stress (WS), for which irrigation was stopped before male flowering. The traits GY (55%) and PE (28%) were most affected by water restriction. Among the morpho-agronomic traits, GW and PR were markedly reduced (>10%). Under dry conditions, the FA in relation to the plant stalk tended to be wider, the FB curvature greater and leaf senescence accelerated (>15% at 22 days after male flowering). The use of multiple regression for the selection of predictive traits proved to be a useful tool for the identification of groups of adequate traits to efficiently predict the economically most important features of popcorn (GY and PE). The SPAD index measured 17 days after male flowering proved useful to select indirectly for GY, while, among the morphological traits, TL stood out for the same purpose. Of all traits, PR was most strongly related with PE under WS, indicating its use in breeding programs. The exploitation of these traits by indirect selection is expected to induce increments in GY and PE.

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Heterobeltiosis in French Marigold (Tagetes patula L.)

Journal of Agricultural Science ◽

10.5539/jas.v8n8p182 ◽

2016 ◽

Vol 8 (8) ◽

pp. 182

Author(s):

Kanwar Priyanaka ◽

Y. C. Gupta ◽

S. R. Dhiman ◽

R. K. Dogra ◽

Sharma Madhu ◽

...

Keyword(s):

Rainy Season ◽

Quantitative Traits ◽

Block Design ◽

Tagetes Patula ◽

Male Sterile ◽

Randomized Block Design ◽

Parental Material ◽

The Mean ◽

Parental Lines ◽

Better Than

The studies on heterosis were carried with four male sterile lines namely; ms7, ms8, ms9, ms10 and 18 diverse pollinators as tester by using line × tester crossing programme. The 72 F1 hybrids were produced and evaluated along with 22 parental lines during summer 2009 and rainy season 2009 in Randomized Block Design. Observations were recorded on nine quantitative traits during both the seasons. Highly significant variances for all the traits indicated the sufficient variability in the parental material for all the characters under study. The performance of F1 hybrids was much better than the mean performance of parents during both the crop seasons. Appreciable heterosis was observed in all the characters, except flower weight in summer and plant height in rainy season.

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