Evaluation of wild oil palm germplasm for horticultural traits

Murugesan, P.; Ramajayam, D.; Kumar, Prashant; Pedapati, Anitha; Ravichandran, G.; Bhagya, H. P.; Pandey, V.P.

doi:10.5958/0974-0112.2020.00058.4

Cited by 3 publications

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“…A produção de cachos é melhor distribuída ao longo do ano em climas tropicais úmidos, com chuvas regulares e uniformes, por outro lado, em climas com estações chuvosas e secas definidas são verificados períodos com maior concentração da produção, bem como, variações bianuais de produção (Webster, 1939;Murugesan et al, 2020). Geralmente são a baixa e a má distribuição da precipitação os fatores climáticos que provocam redução da produtividade nos plantios de palma de óleo, contudo, precipitação excessiva também pode causar problemas, reduzindo a produtividade e atrasando a colheita dos cachos maduros que, em caso de longos períodos deixados na planta, podem sofrer decomposição (Goh et al, 2011).…”

Section: Introductionunclassified

Influência da precipitação pluviométrica na produção de cachos de acessos de palma de óleo na Amazônia Central Brasileira

Morais,

Lopes,

Delgado

et al. 2024

RSD

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A cadeia produtiva do óleo de palma é afetada por problemas como queda de produtividade, concentração da safra (período do ano) e alternância de produção (variação entre anos), os quais estão associados a fatores climáticos e ao genótipo das plantas. Entre as condições climáticas, a precipitação é fator com maior influência na distribuição da produção ao longo do ano. Objetivou-se com este trabalho avaliar a influência da precipitação pluviométrica sobre a produção de cachos de 34 acessos de palma de óleo. O experimento foi conduzido no Campo Experimental do Rio Urubu - Embrapa Amazônia Ocidental, município de Rio Preto da Eva, Amazonas. A avaliação da produção de cachos foi realizada do 5º ao 11º ano após o plantio e utilizados dados de precipitação pluviométrica registrados entre 2002 e 2011. Os componentes de produção avaliados foram número de cachos (NC), peso médio do cacho (PMC) e produtividade de cachos de fruto fresco (CFF). Com o avanço da idade das plantas foi verificado redução no NC e aumento do PMC. A precipitação teve influência significativa nos componentes de produção de cachos. Em anos com precipitação regular, conforme histórico da região, o PMC no 2º semestre do ano é maior do que no 1º. A variação no volume da precipitação influência os componentes de produção mas não altera o período de safra. Nas condições pedoclimáticas da Amazônia Central, os acessos de origem Tanzânia apresentam distribuição da produção anual de cachos diferente dos acessos das demais origens estudadas.

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Section: Introductionunclassified

Influência da precipitação pluviométrica na produção de cachos de acessos de palma de óleo na Amazônia Central Brasileira

Morais,

Lopes,

Delgado

et al. 2024

RSD

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“…Palm oil is much appraised as highly nutritive oil seed crop. According to Murugesan et al (2020) there is a need to select new valuable and promising traits from African germplasm for hybridization to produce trait specific hybrid varieties. The palm oil fruit exocarp, mesocarp, endocarp (shell), and kernel are different parts of oil palm fruit (Corley and Tinker, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…The present study showed that oil-to bunch ratio depends on fruit-to-bunch ratio, mesocarp-fruit ratio. The commercially important source of palm oil is from mesocarp and kernel, which are rich sources of oil (Murugesan et al, 2020). Therefore, factors affecting these traits are rather very important in pre-breeding programmes (Owolarafe et al, 2007;Sapey et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of bunch quality components in Dura x Dura progenies of Zambia and Camaroon sources of oil palm germplasm

Pedapati¹,

Mathur²,

Ravichandran³

et al. 2021

JEB

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Aim: The present study was conducted to evaluate oil palm dura progenies developed from Zambia and Cameroon germplasm sources for bunch components for the selecting of high oil yielding mother palms. Methodology: Total 77 dura genotypes were evaluated by considering 15 different bunch components. Bunch analysis data were collected from tenth year onwards after planting. The genetic diversity, Principal component analysis, correlation and path analysis of the genotypes were estimated. Results: Study revealed that oil-to bunch ratio depends on fruit-to-bunch ratio and mesocarp-fruit ratio. The ANOVA value showed a significant variability among the genotypes for most of the bunch traits and the identified genotype P35 (24.53 %) was highest oil yielder. Positive significant correlation (p≤ 0.01) of mesocarp-to-fruit ratio and oil-to-dry mesocarp with oil-to-bunch ratio were noted in this study. Based on path analysis, the information obtained from this study is the oil-to-wet mesocarp ratio (0.697) showed the highest significant positive direct effect on oil-to-bunch ratio followed by mesocarp-to-fruit ratio (0.570). Interpretation: This study may support for the future selection of mother palms to utilize in oil palm improvement programmes. Introgression into existing breeding materials and breeding for seed production utilising selected palms.

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“…The efforts are in full swing to utilize exotic genetic resources planted in Kerala; whereas, the palms planted in the Little Andaman has received little attention with respect to collection, evaluation and conservation. As we aim to widen the genetic base, the Nigerian source population planted in the Little Andaman plantation is worth preposition for exploration and collection (Murugesan et al, 2020). Moreover, to exploit qualitative traits, study on bunch quality components is crucial to optimize the selection and further development of new hybrids.…”

Section: Introductionmentioning

confidence: 99%

Identification and evaluation of bunch components of Nigerian source oil palms (Elaeis guineensis Jacq.) from Hut Bay, Little Andaman Island, India

Murugesan¹,

Ramajayam²,

Preethi³

et al. 2021

JEB

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Aim: The present study was carried out with an aim to select promising individual oil palms from Nigerian source population at Hut Bay, Little Andaman Island for utilization in breeding programme, enrich germplasm assemblage and conservation in the field gene bank. Methodology: The Nigerian source oil palm were subjected to fruit cut testing and evaluated for eleven bunch quality components of horticultural importance at Oil Palm Research Centre, Palode in Kerala. Results: The maximum standard deviation was observed for total number of fruits followed by total number of spikelet and percentage of shell/fruit, whereas highest CV % was recorded for bunch weight followed by oil to bunch %, single fruit weight and single nut weight. The four identified palms had maximum values of bunch components viz, total number of spikelet, single fruit weight, total number of fruits, mesocarp tofruit and oil to bunch with 262, 15.79g, 2246, 73.79 % and 37.3 %, respectively. Principal Component Analysis of bunch components revealed that the first three principal components accounted for 79.1% of the variability observed with Eigen value more than one. The most important bunch components that contributed more to the diversity of the oil palms are fruit to bunch, single nut weight, single kernel weight, bunch weight, total number of spikelets, total number of fruits and shell thickness. Interpretation: The significant genetic diversity observed among the individual palms of Nigerian source suggests that these palms are best donors of new genes for oil palm improvement as well as widening the genetic base.

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Evaluation of wild oil palm germplasm for horticultural traits

Cited by 3 publications

References 0 publications

Influência da precipitação pluviométrica na produção de cachos de acessos de palma de óleo na Amazônia Central Brasileira

Influência da precipitação pluviométrica na produção de cachos de acessos de palma de óleo na Amazônia Central Brasileira

Evaluation of bunch quality components in Dura x Dura progenies of Zambia and Camaroon sources of oil palm germplasm

Identification and evaluation of bunch components of Nigerian source oil palms (Elaeis guineensis Jacq.) from Hut Bay, Little Andaman Island, India

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