Germplasm screening of Musa spp. for resistance to Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4)

Germplasm screening of Musa spp. for resistance to Fusarium oxysporum f. sp. cubense tropical... Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4) has seriously threatened global banana production. Recently, identification of Foc TR4 in the Caribbean and Mozambique has aroused widespread concern because it may be directly related to food security for millions of people in Africa and Latin America. To identify a resistant or highly resistant germplasm, 129 accessions were evaluated for Foc TR4 resistance in greenhouses and 100 of them were also assessed in the field. In total, 10 accessions were highly resistant (HR) to Foc TR4; these include four from the AA group, two from the BB group, one of the East African highland bananas (EAHBs), two plantains, and one from wild relatives of banana. Of these, Pahang (AA), Calcutta 4 (AA), and Musa itinerans exhibited the highest degree of resistance with an index of disease (ID2) less than 10, and Foc TR4 could not infect any of them in the field. Furthermore, 31 accessions from AA, AB, AAB, AAAB, and ABB groups and wild relatives were identified as a resistant (R) germplasms. All tested EAHBs and plantains exhibited resistance or high resistance to Foc TR4 infection. Our results provide valuable genetic resources for banana breeding and for studying the mechanisms underlying Fusarium wilt resistance. Furthermore, evaluation of EAHBs and plantains provided a rational for local banana producers and researchers to grow EAHBS and plantains. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Plant Pathology Springer Journals

Germplasm screening of Musa spp. for resistance to Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4)

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Koninklijke Nederlandse Planteziektenkundige Vereniging
Subject
Life Sciences; Plant Pathology; Plant Sciences; Ecology; Agriculture; Life Sciences, general
ISSN
0929-1873
eISSN
1573-8469
D.O.I.
10.1007/s10658-017-1406-3
Publisher site
See Article on Publisher Site

Abstract

Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4) has seriously threatened global banana production. Recently, identification of Foc TR4 in the Caribbean and Mozambique has aroused widespread concern because it may be directly related to food security for millions of people in Africa and Latin America. To identify a resistant or highly resistant germplasm, 129 accessions were evaluated for Foc TR4 resistance in greenhouses and 100 of them were also assessed in the field. In total, 10 accessions were highly resistant (HR) to Foc TR4; these include four from the AA group, two from the BB group, one of the East African highland bananas (EAHBs), two plantains, and one from wild relatives of banana. Of these, Pahang (AA), Calcutta 4 (AA), and Musa itinerans exhibited the highest degree of resistance with an index of disease (ID2) less than 10, and Foc TR4 could not infect any of them in the field. Furthermore, 31 accessions from AA, AB, AAB, AAAB, and ABB groups and wild relatives were identified as a resistant (R) germplasms. All tested EAHBs and plantains exhibited resistance or high resistance to Foc TR4 infection. Our results provide valuable genetic resources for banana breeding and for studying the mechanisms underlying Fusarium wilt resistance. Furthermore, evaluation of EAHBs and plantains provided a rational for local banana producers and researchers to grow EAHBS and plantains.

Journal

European Journal of Plant PathologySpringer Journals

Published: Jan 10, 2018

References

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