scholarly journals GENETIC DISTANCE OF 47 ACCESSIONS OF OIL PALM (Elaeis guineensis Jacq.) GERMPLASM FROM CAMEROON BASED ON MORPHOLOGICAL CHARACTER

2019 ◽  
Vol 27 (1) ◽  
pp. 25-40
Author(s):  
Sujadi Sujadi ◽  
Tiara S Wandita ◽  
Nanang Supena ◽  
Yurna Yenni

Oil palm (Elaeis guineensis Jacq.) is a plantation commodity that has an important role in various aspects of life in Indonesia, especially the domestic economy. This is supported by the increasing demand for world palm oil for food needs (edible oil), industrial (oleochemical), and alternative energy sources based on biodiesel. The development of the palm oil industry requires several efforts to achieve increased national productivity, one of which is the utilization of quality seeds supported by the availability of genetic resources (germplasm) that have a high level of genetic diversity. Efforts that can be made for the development of oil palm in Indonesia is through the characterization of oil palm intoduction from abroad. Considering this, further research on genetic distance analysis of palm oil accession introduced from Cameroon is based on morphological characters to produce parent elders that can produce heterosis properties. Research conducted at Seed Garden of Adolina PTPN IV and laboratory analysis of plant material of Palm Oil Research Center located on Jl. Brigjen Katamso No. 5, Medan, North Sumatera, which lasted from December 2017 to February 2018. Single observations were made on 47 accession palm oil from Cameroon planted on December 2010 and ten trees from PPKS 540 variety for compare. Data analysis used was a description of the plant to know the character of plant morphology as well as genetic distance analysis. Analysis of genetic distance using PCA analysis and cluster analysis. The results obtained are based on the results of PCA (Principal Component Analysis) reduce the observed character into six major components that have eigen value > 1 and able to explain the material diversity tested for 73.8%. Based on the cluster analysis obtained the genetic distance of 47 accessions of palm oil from Cameroon by 57%. It can be concluded that, when the genetic distance between accessions is further away, the larger the genetic variability between the observed characters. If the genetic diversity is wider the greater the chance for successful selection in increasing the desired gene frequency.

Bragantia ◽  
2018 ◽  
Vol 77 (4) ◽  
pp. 546-556
Author(s):  
Christian Camilo Castañeda Cardona ◽  
Yacenia Morillo Coronado ◽  
Ana Cruz Morillo Conronado ◽  
Iván Ochoa

2015 ◽  
Vol 8 (2) ◽  
pp. 130-134 ◽  
Author(s):  
Ruy Guilherme Correia ◽  
Antonio Cesar Silva Lima ◽  
Antonio Carlos Centeno Cordeiro ◽  
Francisco Clemilto Da Silva Maciel ◽  
Walmer Bruno Rocha Martins ◽  
...  

Esta pesquisa teve como objetivo avaliar a flutuação populacional de Rhynchophorus palmarum L. (Coleoptera: Curculionidae) em plantios de Elaeis guineensis Jacq, em ecossistemas de savana e floresta no estado de Roraima. A pesquisa foi desenvolvida durante o período de janeiro de 2011 a fevereiro de 2012 nos campos experimentais da Embrapa Roraima: Monte Cristo e Caroebe, numa área de 2 hectares com a cultura da Palma de Óleo, em cada campo. Foram distribuídas armadilhas iscadas com roletes de cana-de-açúcar e feromônio de agregação para captura dos insetos no entorno dos plantios. Ocorreu flutuação de R. palmarum com picos populacionais nos meses de julho e agosto no ecossistema de savana e de abril a setembro no ambiente de floresta. A população de R. palmarum foi menor em meses de baixa precipitação pluviométrica nos dois ambientes avaliados com a Palma de Óleo em RoraimaPopulation Fluctuation of Rhynchophorus  palmarum  L.  (Coleoptera: Curculionidae) in Plantations of Oil Palm in RoraimaAbstract. This research aimed to evaluate the population fluctuation Rhynchophorus palmarum L. (Coleoptera: Curculionidae) in Elaeis guineensis Jacq plantations in forest and savanna ecosystems in the state of Roraima. The research was conducted during the period from January 2011 to February 2012 in the experimental field of Embrapa Roraima: Monte Cristo and Caroebe in an area of 2 hectares with culture Oil Palm in each field. Traps baited with rollers cane sugar and aggregation pheromone for capturing insects in the vicinity of the plantations were distributed. Fluctuation occurred R. palmarum with population peaks in the months of July and August in the savanna ecosystem and from April to September in the forest environment. The population of R. palmarum was lower in months of low rainfall in the two environments assessed with a palm-oil-in Roraima.


2017 ◽  
Vol 11 (9) ◽  
pp. 296-301 ◽  
Author(s):  
Benoit Constant Likeng-Li-Ngue ◽  
Godswill Ntsomboh-Ntsefong ◽  
Georges Frank Ngando-Ebongue ◽  
Hermine Ngalle-Bille ◽  
Achille Nyouma ◽  
...  

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0255418
Author(s):  
Siou Ting Gan ◽  
Chin Jit Teo ◽  
Shobana Manirasa ◽  
Wei Chee Wong ◽  
Choo Kien Wong

Oil palm (Elaeis guineensis) germplasm is exclusively maintained as ex situ living collections in the field for genetic conservation and evaluation. However, this is not for long term and the maintenance of field genebanks is expensive and challenging. Large area of land is required and the germplasms are exposed to extreme weather conditions and casualty from pests and diseases. By using 107 SSR markers, this study aimed to examine the genetic diversity and relatedness of 186 palms from a Nigerian-based oil palm germplasm and to identify core collection for conservation. On average, 8.67 alleles per SSR locus were scored with average effective number of alleles per population ranging from 1.96 to 3.34 and private alleles were detected in all populations. Mean expected heterozygosity was 0.576 ranging from 0.437 to 0.661 and the Wright’s fixation index calculated was -0.110. Overall moderate genetic differentiation among populations was detected (mean pairwise population FST = 0.120, gene flow Nm = 1.117 and Nei’s genetic distance = 0.466) and this was further confirmed by AMOVA analysis. UPGMA dendogram and Bayesian structure analysis concomitantly clustered the 12 populations into eight genetic groups. The best core collection assembled by Core Hunter ver. 3.2.1 consisted of 58 palms accounting for 31.2% of the original population, which was a smaller core set than using PowerCore 1.0. This core set attained perfect allelic coverage with good representation, high genetic distance between entries, and maintained genetic diversity and structure of the germplasm. This study reported the first molecular characterization and validation of core collections for oil palm field genebank. The established core collection via molecular approach, which captures maximum genetic diversity with minimum redundancy, would allow effective use of genetic resources for introgression and for sustainable oil palm germplasm conservation. The way forward to efficiently conserve the field genebanks into next generation without losing their diversity was further discussed.


2021 ◽  
Vol 6 (1) ◽  
pp. 14
Author(s):  
Sarman Sarman ◽  
Elly Indraswari ◽  
Ahmad Husni

Oil palm is one of the most important plantation crops in the plantation sector in Indonesia. Oil palm (Elaeis guineensis Jacq) is a vegetable oil-producing plant in the form of Crude Palm Oil (CPO). CPO productivity is very much determined by quality and productive seeds. Oil palm (Elaeis guineenses Jacq) is a vegetable oil-producing plant which produce Crude Palm Oil (CPO). This study aims to determine the response of oil palm seedling growth to the provision of solid food containers and phosphate fertilizers at various doses in the main nursery. This research was conducted at the Teaching and Research Farm, Faculty of Agriculture, Jambi University, Mendalo Indah, Jambi Luar Kota District, Muaro Jambi Regency. This research was conducted for 3 months from September to December 2019. Design of the experiment used a randomized block design (RBD) with one factor, the application of various solid decanter compositions consisting of 6 treatments levels : p0= fertilizer NPKMg 44g/polybag; p1=decanter solid 140 g + 13 g (TSP) / polybag; p2=decanter solid 240 g + 13 g (TSP) / polybag; p3 = decanter solid 340 g + 13 g (TSP)/polybag; p4 = decanter solid 440 g + 13 g (TSP)/polybag; and p5 = decanter solid 540 g + 13 g (TSP) / polybag. Variables observed were  plant height,  number of leaves, stem diameter, total leaf area, root dry weight, shoot dry weight, and root shoot ratio. The results showed that giving solid decanter at various doses was able to increase growth  in all observed variables and was able to sow seedling growth at recommended fertilization doses. The application of solid decanter 140 g + 13 g (TSP) is the best dose to increase the seed height variable and able to exceed the  seed height at the recommended dose of fertilizing oil palm seedlings in the main nursery.


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