caa a22 4500 44532340X CHVBK 20180317142711.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10681-010-0220-1 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0220-1 Achievements in breeding coconut hybrids for tolerance to coconut foliar decay disease in Vanuatu, South Pacific [Elektronische Daten] [Jean-Pierre Labouisse, Tiata Sileye, François Bonnot, Luc Baudouin] Coconut foliar decay (CFD) is a disease of coconut (Cocos nucifera L.) associated with infection by coconut foliar decay virus (CFDV), which is endemic in Vanuatu, South Pacific. The local cultivar ‘Vanuatu Tall' (VTT) is the only cultivar that is fully tolerant to CFD, whereas introduced cultivars and hybrids are affected to different degrees. From 1967 to 2008 a conventional breeding programme was conducted with the aim of creating hybrid planting material combining tolerance to CFD with improved copra yield and high copra weight per nut. This objective was achieved by crossing the progeny of selfed trees of ‘Rennell Island Tall' (RIT) cultivar, selected for their low susceptibility to CFD in field screening tests, with VTT, improved by mass selection and intercrossing. An improved VTT×RIT hybrid was identified with a high degree of tolerance to CFD (less than 1% of diseased trees after 11years of exposure to high disease pressure). The annual production of the improved VTT×RIT hybrid ranged from 21.9 to 28.6kg of copra per tree, depending on the RIT parent, and was, on average, 34% higher than that of ‘VTT Elite' an advanced cultivar obtained after four selection cycles of local VTT. However, the production of the hybrid in Vanuatu involves constraints such as frequent replanting and isolation of the seed garden and CFD control for the RIT parents. The importance of conducting research on the genetic determinism and the mechanism of tolerance to CFD for better control of the disease in the event that it spreads outside Vanuatu is discussed. Springer Science+Business Media B.V., 2010 Breeding nationallicence Cocos nucifera nationallicence Coconut nationallicence Hybrid nationallicence Pacific nationallicence Plant viruses nationallicence Virus tolerance nationallicence Vanuatu nationallicence CFD : Coconut foliar decay nationallicence CFDV : Coconut foliar decay virus nationallicence CLY : Coconut lethal yellowing nationallicence MRD : Malayan Red Dwarf nationallicence MVT : Markham Valley Tall nationallicence RIT : Rennell Island Tall nationallicence SIT : Solomon Islands Tall nationallicence VRD : Vanuatu Red Dwarf nationallicence VTT : Vanuatu Tall nationallicence Labouisse Jean-Pierre CIRAD, UMR DAP, F-34398, Montpellier, France aut Sileye Tiata VARTC, PO Box 231, Santo, Vanuatu aut Bonnot François CIRAD, UPR Étiologie dépérissements, F-34398, Montpellier, France aut Baudouin Luc CIRAD, UPR Étiologie dépérissements, F-34398, Montpellier, France aut Euphytica Springer Netherlands 177/1(2011-01-01), 1-13 0014-2336 177:1<1 2011 177 10681 https://doi.org/10.1007/s10681-010-0220-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0220-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Labouisse Jean-Pierre CIRAD, UMR DAP, F-34398, Montpellier, France aut NATIONALLICENCE 700 1- Sileye Tiata VARTC, PO Box 231, Santo, Vanuatu aut NATIONALLICENCE 700 1- Bonnot François CIRAD, UPR Étiologie dépérissements, F-34398, Montpellier, France aut NATIONALLICENCE 700 1- Baudouin Luc CIRAD, UPR Étiologie dépérissements, F-34398, Montpellier, France aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 177/1(2011-01-01), 1-13 0014-2336 177:1<1 2011 177 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer