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Genetic divergence among Brazilian turmeric germplasm using morpho-agronomical descriptors
Turmeric (Curcuma longa L.) is a vegetatively-propagated crop which is used as a natural dye in the food industry and also presents many biological active compounds. Turmeric conventional breeding is difficult and often limited to germplasm selection. The aim of this study was to evaluate the geneti...
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Published in: | Crop breeding and applied biotechnology 2011-03, Vol.11 (1), p.70-76 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Turmeric (Curcuma longa L.) is a vegetatively-propagated crop which is used as a natural dye in the food industry and also presents many biological active compounds. Turmeric conventional breeding is difficult and often limited to germplasm selection. The aim of this study was to evaluate the genetic divergence among turmeric accessions available in Brazil using seven morpho-agronomical descriptors. Overall genetic divergence was low, although some divergent genotypes were identified. Four main groups of genotypes were identified and could be further used in breeding programs. Canonical variable analysis suggested that some descriptors were more important to discriminate accessions and also that one of the descriptors could be discarded. The results provided useful insights for better management of the germplasm collection, optimizing conservational and breeding efforts.
A cúrcuma (Curcuma longa L.) é uma planta propagada vegetativamente que, além de ser utilizada como corante natural pela indústria alimentícia, apresenta diversos compostos biologicamente ativos. O melhoramento convencional da cultura é difícil, sendo usualmente limitado à seleção de germoplasma. O presente estudo avaliou a divergência genética entre os acessos de cúrcuma disponíveis no Brasil, utilizando sete descritores morfo-agronômicos. Foi verificada uma pequena divergência entre os acessos, embora alguns genótipos discrepantes pudessem ser identificados. Os acessos foram alocados em quatro agrupamentos principais, a serem considerados em futuros programas de melhoramento. A análise por variáveis canônicas indicou que alguns descritores colaboraram mais na discriminação dos acessos, enquanto que outros podem ser descartados. Os resultados fornecem subsídios importantes para o melhor uso e conservação da coleção. |
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ISSN: | 1984-7033 1518-7853 1984-7033 |
DOI: | 10.1590/S1984-70332011000100010 |