Genetic Diversity of Commercial Oil Palm Seed Production Parents

A genetic diversity analysis was performed on 2039 dura seed palms and 25 pisifera pollen parents using eight Simple Sequence Repeat (SSR) markers. The heterozygosity of the pisifera germplasm (mostly AVROS) was higher than the Deli dura seed palms. Variation was found in heterozygosity among the Deli dura progenies, selected for seed production. As expected, there was increased homozygosity in the dura material with each generation of selfing. Graphical genotyping was carried out to assist the genetic diversity analysis to identify candidate heterotic loci. In the screening of highly homozygous palms, there were 26 dura parental palms which were homozygous at 16 SSR marker loci used, which involved eight different unlinked markers in the first screening, followed by another eight different unlinked markers in the second screening.

Satu kajian mengenai keluasan genetik telah dijalankan ke atas 2039 pokok dura dan 25 pokok pisifera menggunakan lapan penanda molekul jujukan berulang ringkas (SSR). Kadar heterozigositi bagi germplasma pisifera (kebanyakannya adalah AVROS) didapati lebih tinggi berbanding pokok dura. Variasi juga telah didapati wujud dalam heterozigositi di antara progeni dura yang terpilih bagi penghasilan biji benih. Seperti jangkaan, kadar homozigositi bertambah dari generasi ke generasi bagi bahan tanaman kacukan sendiri dura. Gambaran genotip telah dibina bagi membantu analisis keluasan genetik dalam mengenalpasti lokus heterotik. Dalam imbasan ke atas pokok berhomozigositi tinggi, terdapat 26 induk dura yang homozigus pada 16 lokus penanda SSR yang digunakan, yang mana melibatkan lapan penanda tidak berkait yang berbeza pada imbasan pertama, diikuti dengan lapan lagi penanda yang tidak berkait dengan yang lain pada imbasan kedua

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Development of Half-track Articulated Tractor for Peat and Soft Ground

MPOB has recently redesigned the traction mechanism of the standard articulated tractor to get the optimum mobility on soft ground soils and peat areas. Blending the concepts of an articulated half-track and a traction mechanism, this prototype transporter shows a good potential to operate on soft ground. Since 1980s, many fabricators/importers had tested and evaluated […]