Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
A mini core subset for capturing diversity and promoting utilization of chickpea genetic resources in crop improvement
Autore:
Upadhyaya, HD; Ortiz, R;
Indirizzi:
Int Crops Res Inst Semi Arid Trop, Genet Resources & Enhancement Program, Patancheru 502324, Andhra Pradesh, India Int Crops Res Inst Semi Arid TropPatancheru Andhra Pradesh India 502324
Titolo Testata:
THEORETICAL AND APPLIED GENETICS
fascicolo: 8, volume: 102, anno: 2001,
pagine: 1292 - 1298
SICI:
0040-5752(200106)102:8<1292:AMCSFC>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
COLLECTIONS; GERMPLASM; MANAGEMENT;
Keywords:
agronomic traits; chickpea; diversity; mini core subset; morphological traits;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Ortiz, R Int Crops Res Inst Semi Arid Trop, Genet Resources & Enhancement Program, Patancheru 502324, Andhra Pradesh, India Int Crops Res Inst Semi Arid Trop Patancheru Andhra Pradesh India 502324
Citazione:
H.D. Upadhyaya e R. Ortiz, "A mini core subset for capturing diversity and promoting utilization of chickpea genetic resources in crop improvement", THEOR A GEN, 102(8), 2001, pp. 1292-1298

Abstract

A con collection is a chosen subset of large germplasm collection that generally contains about 10% of the total accessions and represents the genetic variability of entire germplasm collection. The purpose of a core collection is to improve the use of genetic resources in crop improvement programs. In many crops the number of accessions contained in the genebank are several thousands, and a core subset consisting of 10% of total accessions would be an unwieldy proposition. In this article we have suggested a two-stagestrategy to select a chickpea mini core subset consisting of only about 1%of the entire collection held in trust at ICRISAT's genebank (16,991 accessions). This mini core subset still represents the diversity of the entire core collection. The first stage involves developing a representative core subset (about 10%) from the entire collection using all the available information on origin, geographical distribution, and characterization and evaluation data of accessions. The second stage involves evaluation of the core subset for various morphological, agronomic, and quality traits, and selecting a further subset of about 10% accessions from the core subset. At both stages standard clustering procedure was used to separate groups of similaraccessions. A mini core subset consisting 211 accessions from 1,956 core subset accessions, using data on 22 morphological and agronomic traits, was selected. Newman-Keuls' test for means, Levene's test for variances, the chi-square test and Wilcoxon's rank-sum non-parametric test for frequency distribution analysis for different traits indicated that the variation available in the core collection has been preserved in the mini core subset. The most important phenotypic correlations which may be under the control of coadapted gene complexes, were also preserved in the mini core. This mini core subset, due to its drastically reduced size, will prove to be a point of entry to proper exploitation of chickpea genetic resources.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 03:44:51