caa a22 4500 463218280 CHVBK 20180405153204.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s11056-006-9012-9 doi (NATIONALLICENCE)springer-10.1007/s11056-006-9012-9 Are Phenological Observations Sufficient to Estimate the Quality of Seed Crops from a Eucalyptus grandis Open-pollinated Seed Orchard? Consequences for Seed Collections [Elektronische Daten] [Gilles Chaix, Philippe Vigneron, Vololoniriana Razafimaharo, Serge Hamon] Reproductive phenology was observed over three years in a Eucalyptus grandis seed orchard in Madagascar to determine the impact of geographic differences of parental selections on the expected genetic composition of seed crops. Pollen flow (observed pollen cloud) was deduced from a paternity assignment based on sampling from one year's seed production. The two approaches were used to verify whether knowledge of phenology is sufficient to predict the genetic quality of the seeds collected. Despite the high flowering level, with a constant cycle over three years, the results demonstrated wide reproductive phenological differences associated with the parents' origin, suggesting putative pollination disequilibrium. From both observed and expected pollen clouds, the results showed preferential mating among different provenances, which has consequences for seed crop composition. Phenological observations, which can be made inexpensively, can be used to promote methods of effective seed orchard management in order to improve the genetic quality of seeds. Springer Science+Business Media B.V., 2006 Seed orchard management nationallicence Flowering nationallicence Pollen flow nationallicence Phenology nationallicence Madagascar nationallicence Chaix Gilles Cirad-forêt, Campus de Baillarguet TA 10C, 34398, Montpellier Cedex 5, France aut Vigneron Philippe Cirad-forêt, Campus de Baillarguet TA 10C, 34398, Montpellier Cedex 5, France aut Razafimaharo Vololoniriana Fofifa, 904, Antananarivo 101, Madagascar aut Hamon Serge IRD Montpellier, 911 Avenue Agropolis, 64501, 34394, Montpellier Cedex, France aut New Forests Kluwer Academic Publishers 33/1(2007-01-01), 41-52 0169-4286 33:1<41 2007 33 11056 https://doi.org/10.1007/s11056-006-9012-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11056-006-9012-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chaix Gilles Cirad-forêt, Campus de Baillarguet TA 10C, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Vigneron Philippe Cirad-forêt, Campus de Baillarguet TA 10C, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Razafimaharo Vololoniriana Fofifa, 904, Antananarivo 101, Madagascar aut NATIONALLICENCE 700 1- Hamon Serge IRD Montpellier, 911 Avenue Agropolis, 64501, 34394, Montpellier Cedex, France aut NATIONALLICENCE 773 0- New Forests Kluwer Academic Publishers 33/1(2007-01-01), 41-52 0169-4286 33:1<41 2007 33 11056 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer