Oil palm inflorescence sex ratio and fruit set assessment in dura × pisifera biparental progenies on fibric peat soil
This study investigated oil palm inflorescence sex ratio (ISR) and fruit set (FS) yield among 24 dura × pisifera biparental progenies on fibric peat soil, hybridized from ten genetic origins. Three-month intervals of data collection on ISR and “S-shape” procedure for FS determination were carried...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Published: |
MDPI
2021
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| Online Access: | http://psasir.upm.edu.my/id/eprint/94417/ https://www.mdpi.com/2073-4395/11/7/1380 |
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| Summary: | This study investigated oil palm inflorescence sex ratio (ISR) and fruit set (FS) yield
among 24 dura × pisifera biparental progenies on fibric peat soil, hybridized from ten genetic origins.
Three-month intervals of data collection on ISR and “S-shape” procedure for FS determination were
carried out in an independent complete randomized design for one year. Based on the assessment of
individual progenies, analysis of variance revealed the existence of genetic heterogeneity. Five of
the progenies had the highest ISR above 90%. However, 20.83% of the progenies (PK4841, PK4674,
ECPHP415, ECPHP550, and PK4118) had the best normal range of ISR, indicating FS declined being
influenced by ISR. Therefore, only 12.50% of the progenies (PK4674, PK4465, and PK4482) were
above 60% FS critical level. Correlation analysis verified that ISR depends on the female flower
and progeny PK4674 (65.78%) and PK4465 (62.62%) had the best FS and fruit to bunch. Among the
parental origins, Deli Serdang × Cameroon was statistically the best for male flower production at
29.40% and ISR at 72.22%. The highest FS was recorded in Deli Banting × AVROS (54.00%) and
Angola × AVROS (53.78%). However, molecular research, such as microsatellite molecular markers if
concurrently used as a selection criterion with the present conventional study, could present further
details to complement the present findings. |
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