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The performance of 11 oil palm AVROS ( Algemene Vereniging van Rubberplanters ter Oostkust van Sumatra )  pisiferas  was evaluated based on their 40  dura  x  pisifera  (DxP) progenies tested on inland soils, predominantly of Serdang Series. Fresh fruit bunch (FFB) yield of each  pisiferas  ranged from 121.93 to 143.9 kg palm −1  yr −1  with trial mean of 131.62 kg palm −1  yr −1 . Analysis of variance (ANOVA) showed low genetic variability among  pisifera parents  for most of the characters indicating uniformity of the  pisifera  population. This was anticipated as the AVROS  pisiferas  were derived from small population and were inbred materials. However, some of the  pisiferas  have shown good general combining ability (GCA) for certain important economic traits. Three  pisiferas  (P1 (0.174/247), P3 (0.174/498), P11 (0.182/308)) were identified of having good GCA for FFB yield while  pisiferas  P1 (0.174/247), P10 (0.182/348), and P11 (0.182/308) were good combiners for oil-to-bunch ratio (O/B). The narrow genetic base of these materials was the main obstacle in breeding and population improvement. However, efforts have been made to introgress this material with the vast oil palm germplasm collections of MPOB for rectifying the problem.

Genetic Performance and General Combining Ability of Oil Palm Delidurax AVROSpisiferaTested on Inland Soils