Phyllotaxis in the Oil Palm: Applications in Selection of Interspecific Hybrids

Thomas, Rebecca; Ng, S. C.; Chan, K. W.

doi:10.1093/oxfordjournals.aob.a084433

Cited by 4 publications

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“…Recent papers describe several characteristics of O × G hybrids, such as phenological stages, bunch morphology and yield [24,[38][39][40][41][42][43], agronomic performance [44][45][46][47], fruit abscission process [48], and genome size [15,49,50]. Even the mycorrhization process [51] and hydroponic cultivation [52] have been assessed, but limited investigations have been carried out regarding the interspecific hybrid palm oil (HPO) composition and its use in food products.…”

Section: Introductionmentioning

confidence: 99%

Current Knowledge on Interspecific Hybrid Palm Oils as Food and Food Ingredient

Mozzon

Foligni

Mannozzi

2020

Foods

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The consumers’ opinion concerning conventional palm (Elaeis guineensis) oil is negatively affected by environmental and nutritional issues. However, oils extracted from drupes of interspecific hybrids Elaeis oleifera × E. guineensis are getting more and more interest, due to their chemical and nutritional properties. Unsaturated fatty acids (oleic and linoleic) are the most abundant constituents (60%–80% of total fatty acids) of hybrid palm oil (HPO) and are mainly acylated in position sn-2 of the glycerol backbone. Carotenes and tocotrienols are the most interesting components of the unsaponifiable matter, even if their amount in crude oils varies greatly. The Codex Committee on Fats and Oils recently provided HPO the “dignity” of codified fat substance for human consumption and defined the physical and chemical parameters for genuine crude oils. However, only few researches have been conducted to date on the functional and technological properties of HPO, thus limiting its utilization in food industry. Recent studies on the nutritional effects of HPO softened the initial enthusiasm about the “tropical equivalent of olive oil”, suggesting that the overconsumption of HPO in the most-consumed processed foods should be carefully monitored.

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Section: Introductionmentioning

confidence: 99%

Current Knowledge on Interspecific Hybrid Palm Oils as Food and Food Ingredient

Mozzon

Foligni

Mannozzi

2020

Foods

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“…Only in recent years, a wide range of characteristics of O×G interspecific hybrids has been thoroughly studied and described: yield and morphology [15][16][17][18][19]; phenological stages [20]; genome size [21,22]; sensitivity to water stress [23,24]; physiological and biochemical response to aluminum toxicity [25]; nutritional status [26]; seed germination [27]; fruit abscission process [28]; and mycorrhization process [29]. Even a comparative characterization of the physiological and biochemical performance of seedlings of O×G hybrids grown in hydroponics was carried out [30].…”

Section: Introductionmentioning

confidence: 99%

Chemical Characteristics and Nutritional Properties of Hybrid Palm Oils

Mozzon¹,

Foligni²,

Tylewicz³

2018

Palm Oil

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Nutritional guidelines and environmental issues are adversely affecting palm oil's image among consumers. However, hybrid palm oils are currently receiving increasing attention because of their interesting chemical characteristics and nutritional properties. Interspecific hybridization Elaeis oleifera × E. guineensis (O×G) has been originally exploited with the main aim of developing disease-resistant varieties. However, available literature data contribute to reinforcing the idea that interspecific hybrid O×G palm oil could be a potential substitute for other vegetable oils rich in monounsaturated fatty acids (i.e., high oleic sunflower and safflower oils). The chapter aims to review current knowledge on various aspects of hybrid palm oil chemical composition (fatty acids, triacylglycerols, partial glycerides, unsaponifiable matter components) and their changes during fruit ripening. The nutritional attributes of hybrid palm oils are compared with the ones of conventional African palm oils.

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“…However, compared with studies dealing with the general morphology, ecology, habitat, and economic applications of palms, those examining the phyllotactic characteristics of palms are few in number (Tomlinson 1990). Past studies of palm phyllotaxis have concentrated mainly on the mature plant (e.g., Davis 1970Davis , 1971; Davis and Mathai 1973;Thomas et al 1969Thomas et al , 1970aThomas et al , 1970bThomas et al , 1970cElhoumaizi et al 2002). They focussed on the determination of divergence angle and (or) clockwise and counter-clockwise phyllotaxis (Davis 1963;Reuveni 1986; Thomas et al 1970bThomas et al , 1970cElhoumaizi et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Past studies of palm phyllotaxis have concentrated mainly on the mature plant (e.g., Davis 1970Davis , 1971; Davis and Mathai 1973;Thomas et al 1969Thomas et al , 1970aThomas et al , 1970bThomas et al , 1970cElhoumaizi et al 2002). They focussed on the determination of divergence angle and (or) clockwise and counter-clockwise phyllotaxis (Davis 1963;Reuveni 1986; Thomas et al 1970bThomas et al , 1970cElhoumaizi et al 2002). The possible relationship between the chirality of palms and latitude and geomagnetic field has also been analysed by various authors (e.g., Davis and Davis 1987;Minorsky 1998;Minorsky and Bronstein 2006).…”

Section: Introductionmentioning

confidence: 99%

Phyllotaxis of the palmEuterpe oleraceaMart. at the level of the shoot apical meristem

Barabé

Bourque

Yin

et al. 2010

Botany

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Previous studies on palm phyllotaxis deal mainly with the mature trunk. The goals of this study are (i) to determine the relationship between the number of parastichies, the divergence angle, and the plastochrone ratio at the level of the shoot apical meristem; (ii) to examine whether there are fluctuations in the divergence angle; (iii) to interpret the significance of phyllotactic parameters with respect to the mode of growth of the apex. The tubular base of the leaf primordium is more or less asymmetrical, and completely surrounds the shoot apical meristem. The phyllotactic system corresponds to a (2, 3) conspicuous parastichy pair. The mean divergence angle per apex varies between 126.98 ± 9.38 (mean ± SD) and 135. 88 ± 8.08. Divergence angles for all apices fluctuate within a range of 115.898 to 157.338. The mean plastochrone ratios between apices varies from 1.35 ± 0.18 to 1.58 ± 0.12. The plastochrone ratio at each plastochrone for all apices ranges from 1.09 to 2.00. There is no correlation between the angle of divergence and the plastochrone ratio. There is a fluctuation in the value of the divergence angle that falls within the range predicted by the fundamental theorem of phyllotaxis. The high value of the ratio of the diameter of leaf primordia over the diameter of the apex, and the long plastochrone might explain the lack of correlation between certain phyllotactic parameters.Résumé : Des études précédentes ont porté sur la phyllotaxie de palmier, mais surtout chez des tiges adultes. Le but de cette étude est de (i) déterminer la relation entre le nombre de parastiches, l'angle de divergence et le ratio du plastochrone, à la hauteur du méristème apical de la tige; (ii) de vérifier s'il y a des fluctuations dans l'angle de divergence; (iii) d'interpréter la signification des paramètres phyllotaxiques en relation avec le mode de croissance apicale. La base tubulaire du primordium foliaire est plus ou moins asymétrique et entoure complètement le méristème apical de la tige. Le système phyllotaxique correspond à une (2, 3) paire bien visible de parastiches. L'angle moyen de divergence par apex varie entre 126,98 ± 9,38 (moyenne ± DS) et 135,88 ± 8,08. La divergence des angles pour tous les apex fluctue régulièrement entre 115,898 et 157,338. Les ratios des plastochrones moyens entre les apex varient entre 1,35 ± 0,18 et 1,58 ± 0,12. Le ratio du plastochrone à chacun des plastochrone pour tous les apex va de 1,09 à 2,00. Il n'y a pas de corrélation entre l'angle de divergence et le ratio du plastochrone. On observe une fluctuation dans la valeur de l'angle de divergence qui se situe dans l'écart prédit par le théorème fondamental de la phyllotaxie. La valeur élevée du ratio du diamètre du primordium foliaire sur le diamètre de l'apex et le long plastochrone pourrait expliquer l'absence de corrélation entre certains paramètres phyllotaxiques.

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Phyllotaxis in the Oil Palm: Applications in Selection of Interspecific Hybrids

Cited by 4 publications

References 0 publications

Current Knowledge on Interspecific Hybrid Palm Oils as Food and Food Ingredient

Current Knowledge on Interspecific Hybrid Palm Oils as Food and Food Ingredient

Chemical Characteristics and Nutritional Properties of Hybrid Palm Oils

Phyllotaxis of the palmEuterpe oleraceaMart. at the level of the shoot apical meristem

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