A multivariate approach to a specific problem of grouping maize cultivars

Smith, Marie F.

doi:10.1080/02571862.1990.10634561

Cited by 4 publications

(3 citation statements)

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“…The intra-cluster distances of cluster I and II were 2.620 and 2.601 consisting of 3 and 5 genotypes, respectively. Smith (1990) reported 3 groups in a divergence study of 48 maize cultivars. These findings are in conformity with the findings of Datta and Mukherjee (2004), Singh et al (2005), Marker and Krupakar (2009).…”

Section: Resultsmentioning

confidence: 99%

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

Biswas

Sarker

Banik

et al. 2015

Bangladesh J. Agric. Res

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The study was conducted to investigate the genetic diversity of some maize inbreds under salinity stress condition using Mahalanobiss 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

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Section: Resultsmentioning

confidence: 99%

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

Biswas

Sarker

Banik

et al. 2015

Bangladesh J. Agric. Res

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“…The cluster I consists of ten genotypes. Smith (1990) reported three groups in a divergence study of 48 maize cultivars.…”

Section: Resultsmentioning

confidence: 99%

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

Azam¹,

Sarker²,

Mian³

et al. 2015

Bangla J Plant Breeding & Genetics

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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.

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“…The cluster IV consists of four genotypes. Smith (1990) reported 3 groups in a divergence study of 48 maize cultivars. The pattern of clustering revealed that the genotypes originated from same country did not form a single cluster.…”

Section: Resultsmentioning

confidence: 99%

GENETIC DIVERGENCE IN MAIZE (Zea mays L.)

Ivy

Uddin

Sultana

et al. 2007

Bangla J Plant Breeding & Genetics

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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

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A multivariate approach to a specific problem of grouping maize cultivars

Cited by 4 publications

References 3 publications

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

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

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

GENETIC DIVERGENCE IN MAIZE (Zea mays L.)

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