Variability in growth of Vachellia nilotica provenances tested in the Sudano-Sahelian zone of Niger

TY - JOUR

T1 - Variability in growth of Vachellia nilotica provenances tested in the Sudano-Sahelian zone of Niger

AU - Larwanou, Mahamane

AU - Issa, Rabiou

AU - Saadou, Mahamane

AU - Ræbild, Anders

PY - 2014/10/31

Y1 - 2014/10/31

N2 - A provenance trial of Vachellia nilotica (Acacia nilotica) was conducted in Niger in order to assess variability in growth among 10 provenances from Africa (subsp. adstringens from Niger, Senegal and Cameroun) and outside the continent (subsp. indica from Pakistan and Yemen). Tree height, diameter at breast height and crown diameter were measured 15 years after trial establishment. Comparison of blocks located at slightly different elevation showed that trees had better survival and growth at the lower sites. The African provenances had better survival and total basal area than provenances from Yemen and Pakistan. Within the African provenances, origins from Niger and Senegal were performing better than the provenance from Cameroun. There were indications that the performance could be correlated to precipitation at origin, but since the correlation was driven by the poor performance of subsp. indica provenances our data are not conclusive.

AB - A provenance trial of Vachellia nilotica (Acacia nilotica) was conducted in Niger in order to assess variability in growth among 10 provenances from Africa (subsp. adstringens from Niger, Senegal and Cameroun) and outside the continent (subsp. indica from Pakistan and Yemen). Tree height, diameter at breast height and crown diameter were measured 15 years after trial establishment. Comparison of blocks located at slightly different elevation showed that trees had better survival and growth at the lower sites. The African provenances had better survival and total basal area than provenances from Yemen and Pakistan. Within the African provenances, origins from Niger and Senegal were performing better than the provenance from Cameroun. There were indications that the performance could be correlated to precipitation at origin, but since the correlation was driven by the poor performance of subsp. indica provenances our data are not conclusive.

U2 - 10.2989/20702620.2014.932633

DO - 10.2989/20702620.2014.932633

M3 - Journal article

SN - 2070-2620

VL - 76

SP - 189

EP - 194

JO - Southern Forests

JF - Southern Forests

IS - 4

ER -