scholarly journals GENETIC DIVERGENCE ON QUANTITATIVE CHARACTERS OF EXOTIC MAIZE INBREDS (Zea mays L.)

2015 ◽  
Vol 26 (2) ◽  
pp. 09-14 ◽  
Author(s):  
M. G. Azam Azam ◽  
U. K. Sarker Sarker ◽  
M. A. K. Mian Mian ◽  
B. R. Banik Banik ◽  
M. Z. A. Talukder
Keyword(s):  
Genetic Diversity ◽  
Grain Yield ◽  
Morphological Traits ◽  
Zea Mays L ◽  
Principal Component ◽  
Inbred Lines ◽  
Quantitative Characters ◽  
Cluster Distance ◽  
Ear Height ◽  
Maize Inbreds

Forty nine CIMMYT, India Maize inbred lines were characterized based on some morphological traits and grain yield. Genetic divergences of inbred lines of maize were estimated using D2 and principal component analysis. The genotypes under study fell into five clusters. The inter cluster distance were higher than intra cluster distance suggesting wider genetic diversity among the genotypes of different groups. The maximum intra cluster value was observed in cluster IV and minimum in cluster V. The inter cluster D2 values revealed that the maximum distance among the cluster. The highest inter cluster distance was observed between cluster II & I and the lowest inter cluster distance was illustrated in cluster III & I. The cluster means were higher for days to 50% tasseling, days to 50% sillking, plant height, ear height, cob length, number of rows per cob, number of grains per row in cluster IV; cob diameter and grain yield per plant was found higher in cluster II. It is expected that crossing of inbred lines belonging high to medium D2 values tend to produce high heterosis for yield.

scholarly journals Genetic diversity of maize (Zea mays L.) Inbreds under salinity stress

2016 ◽  
Vol 40 (4) ◽  
pp. 529-536
Author(s):  
MM Rohman ◽  
BR Banik ◽  
A Biswas ◽  
MS Rahman
Keyword(s):  
Genetic Diversity ◽  
Salinity Stress ◽  
Stress Condition ◽  
Zea Mays L ◽  
Principal Component ◽  
Dry Mass ◽  
Inbred Lines ◽  
Significant Difference ◽  
Cluster Distance ◽  
Maize Inbreds

The study was conducted to investigate the genetic diversity of some maize inbreds under salinity stress condition using Mahalanobis’s statistic (D2) and principal component analysis. Analysis of variance showed significant difference for all the characters. Results of multivariate analysis revealed that twenty five inbred lines formed five clusters at 8 dS level of salinity. The highest intra-cluster distance was recorded in cluster III containing eight genotypes and the lowest was in cluster II having one genotype. The highest inter cluster distance was observed between clusters II & V and lowest was between I & III. Cluster II had the highest cluster means for plant height, cob height, above ground dry mass, cob per plant, cob length, and grain yield per plant. Considering cluster distance, inter-genotypic distance and other agronomic performances the genotypes CZ12, CZ19, CZ26, CZ29, CZ31, CZ32, CZ33 & CML470 from cluster III and CZ27, CZ37, CML251 and CML456 from cluster V may be considered as better parents for future hybridization programs to obtain desirable segregate in respect of different yield and yield contributing characters under salinity stress.Bangladesh J. Agril. Res. 40(4): 529-536, December 2015

scholarly journals Genetic divergence study in salinity stress tolerant maize (Zea mays L.)

2015 ◽  
Vol 39 (4) ◽  
pp. 621-630 ◽  
Author(s):  
A Biswas ◽  
U Sarker ◽  
BR Banik ◽  
MM Rohman ◽  
MA Khaleque Mian
Keyword(s):  
Salinity Stress ◽  
Stress Condition ◽  
Zea Mays L ◽  
Principal Component ◽  
Inbred Lines ◽  
Spad Value ◽  
Significant Difference ◽  
Cluster Distance ◽  
Maize Inbreds ◽  
100 Seed Weight

The study was conducted to investigate the genetic diversity of some maize inbreds under salinity stress condition using Mahalanobis’s statistic (D2) and principal component analysis. Analysis of variance showed significant difference for all the characters. Results of multivariate analysis revealed that seventeen inbred lines formed five clusters at 12 dS level of salinity. The highest intra-cluster distance was recorded in cluster IV containing three genotypes and the lowest was in cluster V having one genotype. The inter cluster D2 values revealed maximum distance among the clusters. The highest inter cluster distance was observed between clusters IV & III and lowest was between V & I. Cluster IV had the highest cluster means for cob height, tassel length, cob length, SPAD value, number of seeds/cob, 100 seed weight, cob diameter and grain yield per plant. Considering cluster distance, inter-genotypic distance, cluster mean and other agronomic performances the genotypes CZ29, CZ33 and P43 from cluster IV and E135, E158, E169, P29 and P45 from cluster III may be considered as better parents for future hybridization programs to obtain desirable segregates in respect of different yield and yield contributing characters under salinity stress. DOI: http://dx.doi.org/10.3329/bjar.v39i4.22540 Bangladesh J. Agril. Res. 39(4): 621-630, December 2014

scholarly journals GENETIC DIVERGENCE IN MAIZE (Zea mays L.)

2007 ◽  
Vol 20 (1) ◽  
pp. 53-56
Author(s):  
N. A. Ivy ◽  
M. Shalim Uddin ◽  
R. Sultana ◽  
M. M. Masud
Keyword(s):  
Genetic Diversity ◽  
Principal Component Analysis ◽  
Zea Mays ◽  
Grain Yield ◽  
Plant Height ◽  
Genetic Divergence ◽  
Zea Mays L ◽  
Principal Component ◽  
Days To Maturity ◽  
Ear Height

Genetic divergence of 25 genotypes of maize were estimated using D2 and Principal Component Analysis. The genotypes under study fell into five clusters. The inter-cluster distances were higher than intra cluster distances suggesting wider genetic diversity among the genotypes of different groups. The intra-cluster value was maximum in cluster V and minimum in cluster I. The inter cluster D2 values showed the maximum distance between cluster II and III followed by the distance between II and I. The cluster means were higher for days to maturity, plant height and ear height in cluster II; grain yield per plant was higher in cluster IV. Genotypes were much in use having the above mentioned characters in clusters II and IV would offer a good scope for the improvement of this crop through hybridization and rational selection.DOI: http://dx.doi.org/10.3329/bjpbg.v20i1.17027

scholarly journals Genetic divergence of exotic inbred lines of maize (Zea mays. L)

2018 ◽  
Vol 42 (4) ◽  
pp. 665-671
Author(s):  
AH Akhi ◽  
S Ahmed ◽  
ANMS Karim ◽  
F Begum ◽  
MM Rohman
Keyword(s):  
Plant Height ◽  
Zea Mays L ◽  
Agricultural Research ◽  
Inbred Lines ◽  
Mean Value ◽  
Morphological Attributes ◽  
Mean Values ◽  
Cluster Distance ◽  
Ear Height ◽  
Total Divergence

Sixty exotic inbred lines of maize from CIMMYT were characterized for a few morphological attributes and grain yield at the experimental field of Bangladesh Agricultural Research Institute (BARI) during 2013-14. The inbred lines of the existing investigation were grouped into five distinct non-overlapping clusters based on D2 analysis. Cluster II was comprised of the highest number of inbreds whilst cluster III and IV included the lowest number of inbreds. The inter cluster distance was higher than intra cluster distance suggesting wider genetic diversity among the genotypes of different groups. The highest inter-cluster distance was exhibited between clusters II and V (D2 = 15.40) and the lowest inter-cluster distance was observed between clusters I and II (D2 = 2.82). Cluster II exhibited the highest mean values for cob length and cob diameter, cluster V for number of grain /cob and total grain weight. The lowest mean value for plant height & ear height were found in cluster II and cluster IV for days to pollen shedding and days to silking. Days to silking, plant height, cob length (cm), number of rows /cob, number of grains /cob showed maximum contribution towards total divergence among different characters. The inbred lines were characterized for their morphological traits and kernel yield to achieve more heterotic partners to get higher heterosis.Bangladesh J. Agril. Res. 42(4): 665-671, December 2017

scholarly journals Comparative analysis of genetic diversity among the maize inbred lines (Zea mays L.) obtained by RAPD and SSR markers

2008 ◽  
Vol 51 (1) ◽  
pp. 183-192 ◽  
Author(s):  
Silvia Graciele Hülse de Souza ◽  
Valéria Carpentieri-Pípolo ◽  
Claudete de Fátima Ruas ◽  
Valdemar de Paula Carvalho ◽  
Paulo Maurício Ruas ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Zea Mays L ◽  
Inbred Lines ◽  
Pedigree Data ◽  
Dice Coefficient ◽  
Quantitative Characters ◽  
Maize Inbred Lines ◽  
Ssr Primers ◽  
Selection Of

The RAPD and SSR markers were used to compare the genetic diversity among the 16 maize inbred lines. Twenty-two primers were used in the RAPD reactions, resulting in the amplification of 265 fragments, while 16 pairs of SSR primers resulted in 75 fragments. The similarity based on Dice coefficient for the RAPD ranged from 53 to 84% and for the SSR from 11 to 82%. The dendrogram obtained by the RAPD showed five groups, while dendrogram obtained by the SSR showed three groups and one isolated line. The association constructed from the markers and the principal coordinate’s analysis separated lines into two groups according to endosperm color, either orange or yellow. The RAPD were effective to validate pedigree data, while the SSR were effective to recognize the differences between the quantitative characters. Because they assess the distinct regions of the genome, the selection of one or other marker would depend on the characteristics of the material used and the objectives of the project.

scholarly journals Genetic diversity of some chili (Capsicum annuum L.) genotypes

2014 ◽  
Vol 4 (1) ◽  
pp. 32-35 ◽  
Author(s):  
MJ Hasan ◽  
MU Kulsum ◽  
MZ Ullah ◽  
M Manzur Hossain ◽  
M Eleyash Mahmud
Keyword(s):  
Genetic Diversity ◽  
Plant Height ◽  
Capsicum Annuum ◽  
Principal Component ◽  
Plant Canopy ◽  
Capsicum Annuum L ◽  
Quantitative Characters ◽  
Cluster Distance ◽  
Minimum Number ◽  
Branch Plant

A study on genetic diversity was conducted with 54 Chili (Capsicum annuum L.) genotypes through Mohalanobis’s D2 and principal component analysis for twelve quantitative characters viz. plant height, number of secondary branch/plant, canopy breadth , days to first flowering, days to 50% flowering, fruits/plant, 5 fruits weight, fruit length, fruit diameter, seeds/fruit, 1000 seed weight and yield/plant were taken into consideration. Cluster analysis was used for grouping of 54 chili genotypes and the genotypes were fallen into seven clusters. Cluster II had maximum (13) and cluster III had the minimum number (1) of genotypes. The highest inter-cluster distance was observed between cluster I and III and the lowest between cluster II and VII. The characters yield/plant, canopy breadth, secondary branches/plant, plant height and seeds/fruit contributed most for divergence in the studied genotypes. Considering group distance, mean performance and variability the inter genotypic crosses between cluster I and cluster III, cluster III and cluster VI, cluster II and cluster III and cluster III and cluster VII may be suggested to use for future hybridization program. DOI: http://dx.doi.org/10.3329/ijarit.v4i1.21088 Int. J. Agril. Res. Innov. & Tech. 4 (1): 32-35, June, 2014

NAM population – a novel genetic resource for soybean improvement: development and characterization for yield and attributing traits

2019 ◽  
Vol 17 (6) ◽  
pp. 545-553 ◽  
Author(s):  
Shivakumar Maranna ◽  
Giriraj Kumawat ◽  
Vennampally Nataraj ◽  
C. Gireesh ◽  
Sanjay Gupta ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Grain Yield ◽  
Association Mapping ◽  
Genetic Resource ◽  
Recombinant Inbred Lines ◽  
Principal Component ◽  
Central India ◽  
Inbred Lines ◽  
Yellow Mosaic Virus ◽  
Yield Potential

AbstractNested association mapping (NAM) captures the best features of both linkage and association mapping and enables the high power and high resolution of quantitative trait locus mapping through joint linkage-association analysis. In the current study, NAM population was developed by hybridizing JS 335, a popular variety of central India with 20 diverse soybean genotypes. The parents used in the study have various traits of economic importance such as drought and water-logging tolerance, bacterial pustule and yellow mosaic virus resistance, wider adaptability, resistance to mechanical damage and higher yield potential. High variability in the F2 populations of 20 crosses for grain yield and days to maturity indicated scope for development of high-yielding varieties. Genetic variability studies, correlation, regression, principal component analysis (PCA) and genetic diversity analyses were carried out in 900 NAM-recombinant inbred lines (RILs) derived from 11 crosses. Correlation and regression analysis indicated a significant positive effect of biomass, pods/plant, harvest index, branches/plant, nodes/plant and plant height on grain yield. Genetic diversity analysis grouped 900 NAM-RILs into 10 clusters. PCA revealed first two principal components to explain 63.78% of total variation mostly contributed by grain yield, biomass and number of pods. The inbred lines developed in this study will serve as an elite soybean genetic resource in understanding the genetic architecture underlying different traits of economic significance.

scholarly journals Genetic and phenotypic relationship between grain yield and components of grain yield of maize (Zea mays L.)

Genetika ◽  
2009 ◽  
Vol 41 (2) ◽  
pp. 145-154 ◽  
Author(s):  
Jan Bocanski ◽  
Zorana Sreckov ◽  
Aleksandra Nastasic
Keyword(s):  
Grain Yield ◽  
Morphological Traits ◽  
Zea Mays L ◽  
Great Influence ◽  
Inbred Lines ◽  
Economic Trait ◽  
Genetic And Phenotypic Correlations ◽  
Efficient Selection ◽  
Kernel Row Number ◽  
Selection Of

For efficient selection of grain yield, like the most importance economic trait, in regard to its on the great influence the environmental factors, has complex mode of inheritance and low heritability, is necessary to know genotypic and phenotypic coefficient of correlations between grain yield and morphological traits of the plant and ear which are influencing on the grain yield. The objective of this paper was to determine relationship between grain yield and morphological traits, in 8 inbred lines and their hybrids. Strong genetic and phenotypic correlations were found between grain yield and other studied traits, except between grain yield, on one side, and kernel row number where we found medium correlations. Between other studied traits, the highest values of genotypic and phenotypic coefficient of correlations were found between ear length and cob weight.

Genetic diversity analysis and identification of promising lines for hybridization in Chickpea (Cicer arietinum L.)

2018 ◽  
Vol 5 (04) ◽  
Author(s):  
ANAND KUMAR ◽  
SADIA PERWEEN ◽  
MANOJ KUMAR ◽  
SANJEEV KUMAR ◽  
SATYENDRA . ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Grain Yield ◽  
Seed Weight ◽  
Mean Value ◽  
Yield Potential ◽  
Quantitative Characters ◽  
Days To Maturity ◽  
Cluster Distance ◽  
Total Divergence ◽  
100 Seed Weight

Forty genotypes of chickpea were evaluated for assessing genetic divergence for different quantitative characters for improving yield potential of chickpea by using Mahalanobis D2 statistics. The genotypes were grouped into seven clusters suggesting considerable amount of genetic diversity in the material. The intra-cluster D2 value ranged from 0.00 to 9.06 while, intercluster D2 value ranged from 4.07 to 55.71. The maximum intra cluster distance was exhibited by cluster V followed by cluster II and cluster I. Cluster III had mono- genotype and emerged with contained highest cluster mean value grain yield per plot. Cluster II has highest mean value for number of pods per plant and lowest mean value for days to 50% flowering, days to maturity and plant height. Maximum contribution toward the total divergence was exhibited by 100-seed weight followed by number of pods per plant and minimum by days to maturity. Cluster IV and VI showing maximum inter cluster distance and crossing of genotypes Sabour chana-1 (BRC-1), GCP 105, PBC 503, DC 16-2, NBeG 776, RVSSG 42, G2016-43, GL 14042, IPC 2013-21, GNG 2338, GNG 2375 and KWR 108 from cluster VI suggested for improving grain yield per plot, 100-seed weight and earliness in flowering and ultimately enhancing the yield and chances of getting better recombinants in segregating generations.

scholarly journals Combining ability of inbred lines of maize and stability of their respective single-crosses

2003 ◽  
Vol 60 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Aurélio Mendes Aguiar ◽  
Luciana Aparecida Carlini-Garcia ◽  
Adelmo Resende da Silva ◽  
Mateus Figueiredo Santos ◽  
Antonio Augusto Franco Garcia ◽  
...  
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
Block Design ◽  
Diallel Analysis ◽  
Inbred Lines ◽  
Breeding Programs ◽  
Randomized Complete Block Design ◽  
Single Cross ◽  
Ear Height

The utilization of diallel crosses for identification of superior combinations is a common practice in maize (Zea mays L.) breeding programs. This methodology allows the estimation of the combining ability of genotypes being evaluated. In this work, five inbred lines were evaluated as to their general (GCA) and specific (SCA) combining abilities, by using a complete diallel scheme. The single-crosses produced between these inbred lines were evaluated in seven environments, along with two checks, by using a randomized complete block design. Traits analized were: grain yield, plant height, ear height, ear placement, and prolificacy. A diallel analysis was carried out, following an adaptation of Griffing's method IV, in addition to hybrid stability and adaptability analyses. Significant differences were detected for entries and environments for all traits. The interaction genotype vs. environment was significant for all traits. GCA's were significant for all traits, while SCA's were non-significant only for ear placement. For grain yield, both additive (GCA) and non-additive (SCA) effects were important, while for the remaining traits additive effects were more important. The high yielding single-cross was obtained from the cross of lines L-08-05F and L-38-05D. Those inbred lines showed higher GCA's and their cross also had high SCA; also, it is responsive to environment improvements and reasonably stable. The second in rank high yielding single-cross, L-46-10D x L-08-05F, showed wide adaptability and stability.

Sign in / Sign up

Export Citation Format

Share Document