Plant Genetics

Soh, A. C.; Mayes, Sean; Roberts, Jeremy A.

doi:10.1201/9781315119724-4

Cited by 12 publications

(18 citation statements)

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“…These two hybrids were developed from different genetic origins, but their male pisifera parents are good combiners with good reproductive features that may have attracted the EK. Soh et al [ 6 ] reported that AVROS pisiferas are well known for their precocious bearing, vigorous growth, thick mesocarp, thin shell, and conferring characteristics of high oil yield. Similarly, Arolu et al [ 54 ] reported that Nigeria pisifera is a good combiner with the attribute of dwarf characteristics for yield improvement.…”

Section: Discussionmentioning

confidence: 99%

“…Its tall nature coupled with its longer spikelets may have enhanced the weevil population density compared to the rest of the other parental origins used in the study. AVROS psiferas have been documented to be good combiners and are well-known worldwide for their active growth and high yield with thick mesocarp conferring attributes [ 6 ].…”

Section: Discussionmentioning

confidence: 99%

“…Advances in breeding have led to the development of elite planting materials by the Malaysian Oil Palm Board (MPOB) for the oil palm industry (OPI). MPOB mainly conducted the hybridization for superior hybrids, through an extensive collection of germplasm [ 6 ]. According to Chong et al [ 7 ], the consideration towards environmental sustainability has led to increased pressure on the Malaysian OPI to intensify its outputs rather than increasing cultivated areas.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Oil Palm Pollinating Weevil (Elaeidobius kamerunicus) Population Density in Biparental dura × pisifera Hybrids on Deep Peat-Soil in Perak State, Malaysia

Swaray

Rafii

Amiruddin

et al. 2021

Insects

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This study was conducted to assess the Elaeidobius kamerunicus (EK) population density among the biparental dura × pisifera hybrids’ palms on deep peat-soil. Twenty-four hybrids derived from 10 genetic sources were used. Variance analysis showed that the EK population density varies between different oil palm hybrids, with a more noticeable variation of a low population mean in the male weevil across the hybrids. The highest weevil population mean/spikelet was attained on the third day of anthesis. The maximum monthly population of EK/spikelet (12.81 ± 0.23) and population density of EK (1846.49 ± 60.69) were recorded in January. Accordingly, 41.67% of the hybrids recorded an EK population density greater than the trial means of 973.68 weevils. Hybrid ECPHP550 had the highest mean of EK/spikelet (10.25 ± 0.11) and the highest population density of EK/palm (1241.39 ± 73.74). The parental mean population was 963.24 weevils and parent Deli-Banting × AVROS recorded the highest EK population density (1173.01). The overall results showed a notable disparity in the EK population among the biparental hybrids. Parental Deli-Banting × AVROS and hybrid ECPHP550 could be more useful to optimize the weevil population for pollination improvements in palm plantations. However, we suggest that volatile production should be included as a desirable trait in oil palm selective breeding.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of Oil Palm Pollinating Weevil (Elaeidobius kamerunicus) Population Density in Biparental dura × pisifera Hybrids on Deep Peat-Soil in Perak State, Malaysia

Swaray

Rafii

Amiruddin

et al. 2021

Insects

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“…However, Arias et al [19] studied different Eo origins and detected the highest total oil-per-bunch ratios [%] for Taisha accessions followed by Coarí accessions, indicating that there may be considerable variation between the particular accessions of the origins. From a commercial point of view (CPO, crude palm oil yield), also the industrial extraction rates have to be considered, which according to Soh et al [20] are lower for hybrids involving Taisha.…”

Section: Discussionmentioning

confidence: 99%

Association Mapping between Candidate Gene SNP and Production and Oil Quality Traits in Interspecific Oil Palm Hybrids

Astorkia

Hernández

Bocs

et al. 2019

Plants

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Oil palm production is gaining importance in Central and South America. However, the main species Elaeis guineensis (Eg) is suffering severely from bud rod disease, restricting the potential cultivation areas. Therefore, breeding companies have started to work with interspecific Elaeis oleifera × Eg (Eo × Eg) hybrids which are tolerant to this disease. We performed association studies between candidate gene (CG) single nucleotide polymorphisms (SNP) and six production and 19 oil quality traits in 198 accessions of interspecific oil palm hybrids from five different origins. For this purpose, barcoded amplicons of initially 167 CG were produced from each genotype and sequenced with Ion Torrent. After sequence cleaning 115 SNP remained targeting 62 CG. The influence of the origins on the different traits was analyzed and a genetic diversity study was performed. Two generalized linear models (GLM) with principle component analysis (PCA) or structure (Q) matrixes as covariates and two mixed linear models (MLM) which included in addition a Kinship (K) matrix were applied for association mapping using GAPIT. False discovery rate (FDR) multiple testing corrections were applied in order to avoid Type I errors. However, with FDR adjusted p values no significant associations between SNP and traits were detected. If using unadjusted p values below 0.05, seven of the studied CG showed potential associations with production traits, while 23 CG may influence different quality traits. Under these conditions the current approach and the detected candidate genes could be exploited for selecting genotypes with superior CG alleles in Marker Assisted Selection systems.

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“…Oil palm is well recognized as the most efficient oil crop that contributes to 35% of global vegetable oil; thus, it can offer a critical solution for global food insecurity to feed the growing global population ( Mielke, 2017 ). Despite the yield and oil quality improvement achieved through conventional breeding and marker-assisted breeding in the past decades ( Soh et al, 2017 ), the annual growth in palm oil production is likely to slow down in the coming years due to a deceleration in land expansion, yield stagnation, climate change, declining labor force, increase in production costs, and pest and disease issues. Thus, the application of genome editing technology can provide opportunities to accelerate and enhance breeding programs with high precision in oil palm to achieve food security and sustainable agriculture.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Clustered Regularly Interspaced Short Palindromic Repeat (CRISPR)/CRISPR-Associated Protein 9 Mutagenesis System for Oil Palm (Elaeis guineensis)

Yeap¹,

Khan²,

Jamalludin³

et al. 2021

Front. Plant Sci.

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The clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated protein 9 (Cas9) system has emerged as a powerful tool for the precise editing of plant genomes for crop improvement. Rapid in vitro methods for the determination of guide RNA (gRNA) cleavage efficiency and an efficient DNA delivery system is essential for gene editing. However, we lack an efficient gene-editing system for palm species. In this study, we described the development of a transient oil palm protoplast assay to rapidly evaluate the cleavage efficiency of CRISPR/Cas9 mutagenesis and the generation of stable transformed oil palms using biolistic particle bombardment in immature embryos. Using the phytoene desaturase (EgPDS) gene, we found cleavage frequency of up to 25.49% in electro-transfected protoplast, which enables the production of transgenic oil palm shoots exhibiting chimeric albino phenotypes as a result of DNA insertions, deletions (InDels), and nucleotide substitutions, with a mutation efficiency of 62.5–83.33%. We further validated the mutagenesis efficiency and specificity of the CRISPR/Cas9 system in oil palm by targeting the brassinosteroid-insensitive 1 (EgBRI1) gene, which resulted in nucleotide substitutions in EgBRI1 with premature necrosis phenotype in oil palm transgenic shoots and stunted phenotype resulting from DNA InDels. Taken together, our results showed that effective and efficient editing of genes using the CRISPR/Cas9 system can be achieved in oil palm by optimizing the selection of efficient gRNA and DNA delivery methods. This newly designed strategy will enable new routes for the genetic improvement in oil palm and related species.

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Plant Genetics

Cited by 12 publications

References 0 publications

Assessment of Oil Palm Pollinating Weevil (Elaeidobius kamerunicus) Population Density in Biparental dura × pisifera Hybrids on Deep Peat-Soil in Perak State, Malaysia

Assessment of Oil Palm Pollinating Weevil (Elaeidobius kamerunicus) Population Density in Biparental dura × pisifera Hybrids on Deep Peat-Soil in Perak State, Malaysia

Association Mapping between Candidate Gene SNP and Production and Oil Quality Traits in Interspecific Oil Palm Hybrids

An Efficient Clustered Regularly Interspaced Short Palindromic Repeat (CRISPR)/CRISPR-Associated Protein 9 Mutagenesis System for Oil Palm (Elaeis guineensis)

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