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Titolo:
Genetic diversity in blackgram (Vigna mungo L. Hepper)
Autore:
Ghafoor, A; Sharif, A; Ahmad, Z; Zahid, MA; Rabbani, MA;
Indirizzi:
Natl Agr Res Ctr, Plant Genet Resources Inst, Islamabad, Pakistan Natl AgrRes Ctr Islamabad Pakistan Resources Inst, Islamabad, Pakistan Quaid I Azam Univ, Dept Biol Sci, Islamabad, Pakistan Quaid I Azam Univ Islamabad Pakistan Dept Biol Sci, Islamabad, Pakistan Natl Agr Res Ctr, Pulses Programme, Islamabad, Pakistan Natl Agr Res Ctr Islamabad Pakistan lses Programme, Islamabad, Pakistan
Titolo Testata:
FIELD CROPS RESEARCH
fascicolo: 2, volume: 69, anno: 2001,
pagine: 183 - 190
SICI:
0378-4290(200102)69:2<183:GDIB(M>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
MORPHOLOGICAL CHARACTERS; NUMERICAL TAXONOMY; LANDRACES; GERMPLASM; ALFALFAS;
Keywords:
cluster analysis; germplasm evaluation; mash; multivariate analysis; PCA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Ghafoor, A Natl Agr Res Ctr, Plant Genet Resources Inst, Park Rd, Islamabad, Pakistan Natl Agr Res Ctr Park Rd Islamabad Pakistan lamabad, Pakistan
Citazione:
A. Ghafoor et al., "Genetic diversity in blackgram (Vigna mungo L. Hepper)", FIELD CR RE, 69(2), 2001, pp. 183-190

Abstract

Blackgram germplasm comprising 484 accessions was evaluated for qualitative and quantitative traits at NARC, Islamabad, Pakistan (33.40 degreesN and 73.07 degreesE). Quantitative traits were analyzed for cluster and principal component analyses. The first four PCs with eigenvalues >1 contributed 79.5% of the variability amongst accessions. Populations with high PCI valueswere high yielding and characterized by low harvest index (HI). The populations with high PC2 values were late in flowering and maturity but low in HI, grain yield, branches, pods and pods/branch. Nine important characters contributed more positively to the first three PCs. The germplasm was catagorized in five clusters based on average linkage and clusters II, III and IVwere more clearly separated than I and V. A selection score (SC) to find appropriate HI range was calculated and high SC was observed for HI range from 30.1 to 35.0% (14.71) and 25.1 to 30.0% (13.84), which is suggested as one of the selection criteria for future blackgram improvement. The germplasm under investigation displayed a wide range of diversity for most of the traits along with some accessions with unique characters which could help toidentify landraces with suitable traits to be used in hybridization programme for breeding to broaden genetic base. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 22/01/20 alle ore 18:31:20