Multiplication végétative de &lt;i&gt;Cola acuminata&lt;/i&gt; (Pal. de Beauv.) Schott &amp; Endlicher par marcottage à Kisangani, République Démocratique du Congo

Paluku, Augustin; Bwama, Marcel; Okungo, Albert Lotokola; Damme, Patrick Van

doi:10.4314/ijbcs.v12i3.6

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…In the present study, bud regeneration rate was generally low. Paluku et al [19] made the same observations during in vitro regeneration of Cola acuminata. This study revealed that the production of friable, greenish callus in the two local varieties tested auguring a prospect for intense proliferation through regeneration of neoformed organogenesis callus.…”

Section: Discussionmentioning

confidence: 64%

Topophysis and Growth Regulators Effects on Buds and Zygotic Embryos Regeneration of African Bush Mango Tree Cultured In vitro

Agbidinoukoun

Noumon

Quenum

et al. 2022

ARRB

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Background: African bush mango tree is an important fruit plant with high nutritional, medicinal, and commercial values. However, its seedling system remained a deep understanding. This study aimed to evaluate the effect of topophysis and growth regulators on the reactivity of different types of buds and zygotic embryos of wild mango. Methodology: Ripe fruits from two local varieties (Wossro and Sissro) were pulped. The nuts were extracted and dried for one week under greenhouse. Zygotic embryos were excised from nuts and disinfected with the bleach solution (NaClO 10% with 8% active chloride) for 10 min following by three successive rinsing using sterilized water. The second set of nuts was cultivated for under greenhouse in the polybags containing the sand. One month later, buds from different positions (apical, axillary and cotyledonary) were excised and disinfected with NaClO 10% for 10 min follow by the immersion in a mercuric chloride 0.1% added with two drops of Tween 20 especially for axillary and cotyledonary buds for 5 min while 0.01% of mercuric chloride was used for apical buds. The explants were cultured on ¼MS and ½WPM media supplemented with BAP, KIN at different concentrations (0.2 mg/L and 3.5 mg/L respectively) and NAA (0.05 mg/L). Results: The best sprouting rate was obtained with the variety Wossro which showed a high bud break rate (26.47%) against (9.88%) for the variety Sissro. The topophysis significantly influenced the response of the buds in tissue culture. 24.48% of axillary buds were sprouted on ¼ MS medium + 3.5 mg/L BAP+ 0.05mg/L NAA. The in vitro germination of embryos was significantly (p≤ 0.05) influenced by the genotype of the variety. 50.76% of buds were germinated for Wossro while 18.32% were germinated for Sissro. ¼ MS + 0.2 mg/L KIN has significant influenced the plants growth and development. Implication: The findings will help to improve the regeneration rate and plantlets production of African bush mango tree.

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Section: Discussionmentioning

confidence: 64%

Topophysis and Growth Regulators Effects on Buds and Zygotic Embryos Regeneration of African Bush Mango Tree Cultured In vitro

Agbidinoukoun

Noumon

Quenum

et al. 2022

ARRB

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“…In Côte d'Ivoire, leafy greenwood and softwood stem cuttings of G. kola presented good ability to shooting and rooting in non-mist propagators while leafless hardwood stem cuttings were only able to shoot even without application of exogenous hormones [363,364]. In the Democratic Republic of Congo, leafy stem cuttings of C. acuminata with 25 cm 2 leaves rooted well (81%) when treated with the auxin Indol-butyric acid [366]. In the difficult to propagate A. floribunda, like Cola anomala, rooting was significantly improved with an application of nitrogen-based fertilisers [150,362].…”

Section: Vegetative Propagationmentioning

confidence: 99%

The Future of Food: Domestication and Commercialization of Indigenous Food Crops in Africa over the Third Decade (2012–2021)

Leakey¹,

Avana

Awazi

et al. 2022

Sustainability

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This paper follows the transition from ethnobotany to a deeper scientific understanding of the food and medicinal properties of African agroforestry tree products as inputs into the start of domestication activities. It progresses on to the integration of these indigenous trees as new crops within diversified farming systems for multiple social, economic and environmental benefits. From its advent in the 1990s, the domestication of indigenous food and non-food tree species has become a global programme with a strong African focus. This review of progress in the third decade is restricted to progress in Africa, where multi-disciplinary research on over 59 species has been reported in 759 research papers in 318 science publications by scientists from over 833 research teams in 70 countries around the world (532 in Africa). The review spans 23 research topics presenting the recent research literature for tree species of high priority across the continent, as well as that in each of the four main ecological regions: the humid zone of West and Central Africa; the Sahel and North Africa; the East African highlands and drylands; and the woody savannas of Southern Africa. The main areas of growth have been the nutritional/medicinal value of non-timber forest products; the evaluation of the state of natural resources and their importance to local people; and the characterization of useful traits. However, the testing of putative cultivars; the implementation of participatory principles; the protection of traditional knowledge and intellectual property rights; and the selection of elite trees and ideotypes remain under-researched. To the probable detriment of the upscaling and impact in tropical agriculture, there has been, at the international level, a move away from decentralized, community-based tree domestication towards a laboratory-based, centralized approach. However, the rapid uptake of research by university departments and national agricultural research centres in Africa indicates a recognition of the importance of the indigenous crops for both the livelihoods of rural communities and the revitalization and enhanced outputs from agriculture in Africa, especially in West Africa. Thus, on a continental scale, there has been an uptake of research with policy relevance for the integration of indigenous trees in agroecosystems and their importance for the attainment of the UN Sustainable Development Goals. To progress this in the fourth decade, there will need to be a dedicated Centre in Africa to test and develop cultivars of indigenous crops. Finally, this review underpins a holistic approach to mitigating climate change, as well as other big global issues such as hunger, poverty and loss of wildlife habitat by reaping the benefits, or ‘profits’, from investment in the five forms of Capital, described as ‘land maxing’. However, policy and decision makers are not yet recognizing the potential for holistic and transformational adoption of these new indigenous food crop opportunities for African agriculture. Is ‘political will’ the missing sixth capital for sustainable development?

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“…Avec le colatier, Cola acuminata, des taux supérieurs à 80% ont été obtenus par une multiplication végétative par bouturage. (Paluku et al, 2018) Selon Barbier (2012, Jatropha curcas L. est capable de résister à une saison sèche plus ou moins prononcée avec des températures moyennes variant de 20 °C à 32 °C. Son tronc à caudex qui constitue un réservoir d'eau, est capable de résister à des périodes de sécheresse prolongées (Formad environement, 2013).…”

Section: Le Débourrement Des Boutures Le Mode De Conservation Sur Le unclassified

Multiplication par bouturage de <i>Jatropha curcas</i> L. : influence du nombre de nœuds, du diamètre, de la durée et du temps de conservation des boutures

Thiam¹,

Samba²,

Samb³

et al. 2020

Int. J. Bio. Chem. Sci

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RESUMEDepuis l'avènement des chocs pétroliers, beaucoup de pays se sont interrogés sur le problème de l'énergie. Ainsi, de nombreuses études ont été menées dans le but de résorber ce problème énergétique qui touche en grande partie les pays africains tel que le Sénégal. Ces dernières ont porté sur l'utilisation de sources d'énergies renouvelables comme le Jatropha curcas L. qui présente de nombreux avantages biophysiques et médicaux. La présente étude est réalisée dans l'objectif d'expérimenter l'effet de la conservation dans le temps de différentes gammes de boutures sur son débourrement. Différentes catégories de boutures (boutures à 6 noeuds et à 4 noeuds) ayant chacune proportionnellement des classes de diamètres comprises entre]0-1] et] 1-2] (cm) ont été utilisées. Elles ont été conservées en chambre froide et à l'air libre sur une durée de 45 jours. Chaque 15 ème jour un lot de même proportion de boutures conservées dans les deux conditions est planté en partant des boutures témoins plantées juste après récolte. Avant plantation, le statut hydrique des différentes catégories de boutures sont relevées à bases d'indicateurs tels que le potentiel hydrique et la teneur en eau. L'évaluation de l'état hydrique des boutures avec la teneur en eau a donné (86,93%) pour les boutures conservées en chambre froide, et (67,31%) pour celles conservées à l'air libre. Cet effet est réversible avec le potentiel hydrique qui donne respectivement (-0,33%) et (-0,69%). Le débourrement est maximal avec le témoin pour les deux modes de conservation et régresse en fonction du temps de conservation (témoin, 15 jours, 30 jours, 45 jours). Malgré cet effet, les boutures conservées à l'air libre ont connu un meilleur débourrement (92,5%, 70,83%, 67,5%, 42,08%) que celles conservées en chambre froide (85%, 32,5%, 25%, 0%). Cette régression est ainsi assimilée à une augmentation de sa durée de débourrement dans le temps. La teneur en eau, ainsi que le potentiel hydrique varient en fonction du calibre, du mode et du temps de conservation. Cependant, le débourrement des boutures est influencé à la fois par le calibre, le mode et le temps de conservation des boutures ABSTRACTSince the advent of the oil crises, many countries have wondered about the problem of energy.Thus, many studies were carried out in order to find a way of resolving this energy issue which mainly touches the African countries such as Senegal. The latter are related to the use of renewable energies sources such as Jatropha curcas L. which has many biophysical and medical advantages. The present study is carried out with the purpose of trying out the effect of the storage within given time of various ranges of cuttings at its bud break. Various categories of cuttings (cuttings with 6 nodes and 4 nodes) having each one, proportionally, classes of diameters included between] 0-1] and] 1-2] (cm) were used. They were stored in cold room and into the open air during 45 days. Each 15 th day, a batch of the same proportion of cuttings stored under the two conditions are planted...

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Multiplication végétative de <i>Cola acuminata</i> (Pal. de Beauv.) Schott & Endlicher par marcottage à Kisangani, République Démocratique du Congo

Cited by 5 publications

References 5 publications

Topophysis and Growth Regulators Effects on Buds and Zygotic Embryos Regeneration of African Bush Mango Tree Cultured In vitro

Topophysis and Growth Regulators Effects on Buds and Zygotic Embryos Regeneration of African Bush Mango Tree Cultured In vitro

The Future of Food: Domestication and Commercialization of Indigenous Food Crops in Africa over the Third Decade (2012–2021)

Multiplication par bouturage de <i>Jatropha curcas</i> L. : influence du nombre de nœuds, du diamètre, de la durée et du temps de conservation des boutures

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