Multivariate Hierarchical Clustering of Cowpea Germplasm (Vigna Unguiculata (L.) Walp.

Lal, H.; Rai, Mayank; Karan, Şenay; Verma, A. K.; Ram, Dama

doi:10.17660/actahortic.2007.752.74

Cited by 13 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, selection of these traits on the basis of genotypic value may be effective. Similar results were earlier reported by several workers (Lal et al, 2007;Ullah et al, 2011;Huque et al, 2012a;Nwofia et al, 2013;Chattopadhyay et al, 2014).…”

Section: Results and Discussion Genetic Variabilitysupporting

confidence: 92%

“…Among the nine yield component traits, number of pods per plant followed by pod weight showed highly positive direct effect on pod yield per plant which corroborates the findings of previous workers (Lal et al, 2007;Ullah et al, 2011;Chattopadhyay et al, 2014). The present study indicated that direct selection of these two characters could be beneficial for yield improvement of bush type vegetable cowpea since these characters also showed positive correlation with pod yield per plant.…”

Section: Cause-effect Analysissupporting

confidence: 91%

“…It constructs an all-to-all matrix to describe the distance between each sequence pair of genotypes; thereby guiding plant breeder in their selection procedure (Adewale et al, 2011). The multivariate analysis is a useful tool for choosing the parents for hybridization and has been well demonstrated by various workers (Lal et al, 2007;Sulnathi et al, 2007;Suganthi et al, 2007;Huque et al, 2012b;Chattopadhyay et al, 2014). Therefore, in the present work, an attempt was made to study the genetic variability, inter-relationship, cause-effect analysis between yield and its components and the nature and magnitude of genetic divergence to identify important selection indices influencing pod yield and selection of suitable genotypes that can profitably be utilized in a hybridization programme.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biometrical studies of yield and related traits in advance breeding lines of bush type vegetable cowpea [Vigna unguiculata (L.) Walp.]

Lal

Reddy

Nath

2017

View full text Add to dashboard Cite

Sixty-six bush type advance breeding lines of vegetable cowpea developed at ICAR -Indian Institute of Vegetable Research (ICAR-IIVR), Varanasi were evaluated for different horticultural traits for genetic variability, character association, causeeffect analysis and genetic diversity among the genotypes through D 2 statistics. High values of genotypic and phenotypic coefficient of variations, heritability (h 2 B) and genetic advance were recorded for pod yield per plant, number of peduncles and pods per plant, peduncle length, number of primary branches per plant, pod length, pod weight and number of seeds per pod. Pod yield per plant showed strong positive correlation with number of peduncles and pods per plant, pod weight, pod length, number of seeds per pod and number of primary branches per plant, while negative correlation with days to 50% flowering at genotypic and phenotypic levels. The maximum direct positive effect on pod yield per plant was found contributed by number of pods per plant followed by pod weight. Based on degree of divergence the genotypes get grouped into seventeen clusters. The top three characters which contributed most towards the genetic divergence were number of peduncles per plant, peduncle length and pod length. The genotypes of cluster VII showed maximum genetic divergence with genotypes of cluster VIII. Further, cluster VII had the high yielding genotypes, while cluster XVII had early flowering genotypes. Thus, crossing between genotypes of these groups may result in high yielding early genotypes.

show abstract

Section: Results and Discussion Genetic Variabilitysupporting

confidence: 92%

Section: Cause-effect Analysissupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biometrical studies of yield and related traits in advance breeding lines of bush type vegetable cowpea [Vigna unguiculata (L.) Walp.]

Lal

Reddy

Nath

2017

View full text Add to dashboard Cite

show abstract

“…O comprimento do pedúnculo também constitui um dos caracteres que contribuí para modernizar a arquitetura da planta, considerado um dos objetivos do melhoramento visando a agricultura familiar (Freire Filho et al 2011). O comprimento do hipocótilo mostrou-se elevado para as cultivares analisadas, por outro lado, o comprimento do pedúnculo, com valores médios variando de 104,6 a 279,9 mm; foi inferior ao encontrado na literatura especializada, com variação de 190 a 500 mm (Lopes et al 2001;Lal et al 2007). Leite et al (1999) encontraram valores maiores, com tempo médio para começo da floração de 55 dias.…”

Section: Discussionunclassified

Descrição de cultivares locais de feijão-caupi coletados na microrregião Cruzeiro do Sul, Acre, Brasil

et al. 2015

View full text Add to dashboard Cite

A distribuição de sementes comerciais ameaça erodir o germoplasma local em regiões tradicionais de plantio de feijões-caupi (Vigna unguiculata). O objetivo deste trabalho foi descrever as cultivares locais de feijão-caupi da Resex Alto Juruá e da microrregião Cruzeiro do Sul -AC. Foram conduzidos dois experimentos nos anos de 2011 e 2012, em sistema convencional e, em sistema de plantio em aleias, respectivamente. O delineamento experimental adotado nos experimentos foi de blocos ao acaso com nove tratamentos (cultivares), três repetições por tratamento, parcelas de 12 m 2 e espaçamento de 0,45 m entre plantas e linhas. Foram observados vinte caracteres qualitativos e 21 quantitativos. A análise de variância conjunta dos experimentos apresentou contraste significativo para genótipo, sistema de plantio e interação genótipo/sistema de plantio. A característica qualitativa com maior variação entre os genótipos foi subclasse comercial, seguida da cor do grão, pigmentação da vagem imatura, forma do folíolo apical, cor das folhas e curvatura da vagem. O hábito da planta, tendência a enrolar-se ao tutor, fixação da vagem ao pedúnculo e espessura de parede da vagem não apresentaram diferenças. Dos caracteres quantitativos apenas número de dias até 50% das plantas em florescimento e número de lóculos/vagem não diferiram estatisticamente entre cultivares. Os valores médios para comprimento de vagem, comprimento do pedúnculo, número de vagens por pedúnculo e número de vagens por planta foram baixos, entretanto, o germoplasma coletado apresentou características valorizadas como ciclo precoce, arquitetura adequada da planta além da adaptação ao plantio em várzeas. PALAVRAS-CHAVE: Vigna unguiculata, germoplasma, plantio em várzeas. Description of local cowpea cultivars from the microregion of Cruzeiro do Sul, Acre, Brazil ABSTRACTLocal varieties of cowpea beans (Vigna unguiculata) are exposed to genetic erosion due to the introduction of commercial seeds. The aim of this study was to describe local germplasm of cowpea beans from Resex Alto Juruá and microrregion of Cruzeiro do Sul, Acre, Brazil. Two experiments were conducted either using the conventional agricultural system (in 2011), or in an alley cropping system (in 2012). The experimental was a randomized block design with nine treatments (cultivars) and three replicates per treatment. The plots were 12 m 2 in size and rows were 0.45 m apart. Twenty qualitative and 21 quantitative characters were observed. The combined analysis of variance showed significant effects for genotype, agricultural system and for the interaction genotype/agricultural system. The qualitative trait with greater variation among genotypes were the commercial subclass according to the classification adopted by the Brazilian Ministry of Agriculture, followed by grain color, immature pod pigmentation, apical leaflet shape, leaf color and pod curvature. The plant habit, twinning tendency, pod attachment to peduncle and the pod wall thickness did not show differences. Among the quantitative traits, day...

show abstract

“…Bertini et al (2009) evaluated 16 cowpea accessions of the germplasm bank of Universidade Federal do Ceará, and found a variation in grain yield, that is, 35.65-328.15 g. The YD was highest for accession CE-871, and the other accessions with high YD were CE-79 (312.29 g), CE-93 (292.73 g), and CE-873 (323.03 g). According to Lal et al (2007), breeding programs involving the selection of parents based on genetic divergence in YD components can produce transgressive segregants with good YD potential.…”

Section: Discussionmentioning

confidence: 99%

Genetic divergence among African cowpea lines based on morphoagronomic traits

Costa

Damasceno‐Silva

Rocha³

et al. 2013

Genet. Mol. Res.

View full text Add to dashboard Cite

ABSTRACT. The aim of this study was to estimate the genetic divergence between African cowpea lines from the Cowpea Germplasm Bank of Embrapa Meio-Norte, Brazil. The morphoagronomic diversity of 57 cowpea lines was assessed using multivariate analysis. The germplasm was evaluated in August 2009 using a randomized block design with three replications based on the following traits: number of pods per peduncle, pod length (PL), number of grains per pod (NGP), grain length (GRL), grain width, 100-grain weight (W100G), and yield. The heritability values of the traits PL, NGP, GRL, and W100G were all higher than 70%, indicating the possibility of genetic progress with selection. The crosses between the lines IT82D-889 and IT89KD-245, IT85F-1380 and IT89KD-245, and IT89KD-245 and IT98K-1092-1 could result in promising genetic combinations. The characteristics that contributed most to genetic divergence were W100G (49.7%), PL (16.7%), GRL (12.0%), and NGP (9.7%).

show abstract

Multivariate Hierarchical Clustering of Cowpea Germplasm (Vigna Unguiculata (L.) Walp.

Cited by 13 publications

References 0 publications

Biometrical studies of yield and related traits in advance breeding lines of bush type vegetable cowpea [Vigna unguiculata (L.) Walp.]

Biometrical studies of yield and related traits in advance breeding lines of bush type vegetable cowpea [Vigna unguiculata (L.) Walp.]

Descrição de cultivares locais de feijão-caupi coletados na microrregião Cruzeiro do Sul, Acre, Brasil

Genetic divergence among African cowpea lines based on morphoagronomic traits

Contact Info

Product

Resources

About