caa a22 4500 463218175 CHVBK 20180405153204.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s11056-007-9049-4 doi (NATIONALLICENCE)springer-10.1007/s11056-007-9049-4 Raddad El Viikki Tropical Resources Institute (VITRI), University of Helsinki, Latokartanonkaari 9, P.O. Box 27, 00014, Helsinki, Finland aut Ecophysiological and genetic variation in seedling traits and in first-year field performance of eight Acacia senegal provenances in the Blue Nile, Sudan [Elektronische Daten] [El Raddad] The genetic variation in seed weight, seed number per kg and seedling traits was compared among eight Acacia senegal provenances originating from the clay plain (east) and sand plains (west) of the gum belt in Sudan. The main objective of this study was to identify germplasm sources of A. senegal that have a good seed germination capacity and seedling traits suitable for reforestation in the clay-soil part of the dryland gum belt in the Blue Nile region in Sudan. A specific objective was to tentatively explore the adaptive strategy of A. senegal populations. Seventeen-week-old seedlings were planted in the field at spacing of 3m×3m, giving 100 trees per plot and replication; within a randomized complete block design with four replications. The experimental site was in the clay plain region. Seed variables showed significant differences. Clay plain provenances showed considerable variation in seed weight and seed number. They had the smallest seed weight but the highest seed number, while the sand (western) provenances had the largest seed weight but lowest seed number. Seedling branch number, root length, root to shoot ratio and shoot dry weight differed significantly among the provenances 12weeks after germination. Clay provenances had the highest branch number and shoot dry weight but the shortest roots and lowest root to shoot ratio. This was interpreted as showing better adaptation to the site in these local provenances in comparison to those originating from the western sandy soil regions. High positive correlations were observed between seedling variables, such as root nodule and branch numbers; this could be used for early selection. The variation was greater between provenance groups than within them, suggesting that especially selection among groups would yield genetic gain. Springer Science+Business Media, Inc., 2007 Agroforestry nationallicence Adaptation nationallicence Clay plain nationallicence Gum belt nationallicence Reforestation nationallicence Relative growth rate nationallicence New Forests Springer Netherlands 34/3(2007-11-01), 207-222 0169-4286 34:3<207 2007 34 11056 https://doi.org/10.1007/s11056-007-9049-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11056-007-9049-4 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Raddad El Viikki Tropical Resources Institute (VITRI), University of Helsinki, Latokartanonkaari 9, P.O. Box 27, 00014, Helsinki, Finland aut NATIONALLICENCE 773 0- New Forests Springer Netherlands 34/3(2007-11-01), 207-222 0169-4286 34:3<207 2007 34 11056 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer