Effets de l’ecimage sur la performance a l’entreposage des tubercules de macabo (Xanthosoma sagittifolium L.)

René M. Bikomo, A. Akoa
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Abstract

L’effet de l’ecimage pre recolte, (a 1 et 2 semaines respectivement avant recolte) etait teste sur le comportement en entreposage post recolte de 2 varietes de macabo ( Xanthosoma sagittifolium L. ), le blanc et le rouge, a travers un arrangement factoriel independant. Apres 3 mois d’observations, l’ecimage effectue a 2 semaines de la recolte a de maniere significative (p 0,05) sur la perte de poids, le bourgeonnement et la pourriture du macabo. L’ecimage a par ailleurs cause une reduction progressive de la teneur en amidon des tubercules du macabo blanc, s’accentuant avec la duree d’entreposage. Les tubercules provenant des plantes ecimees 2 semaines avant la recolte ont fait l’objet d’une accumulation plus elevee de sucres totaux en comparaison les niveaux enregistres dans les produits preleves des plantes ecimees 1 semaine plus tard et dans les tubercules des plantes non ecimees. L’ecimage a egalement, independamment la variete, contribue a une amelioration significative (p 0,05) on weight loss, sprouting, and rotting of cocoyam. Moreover, pruning has induced an increasing reduction in starch content of white cocoyam, with storage duration. During shelflife period, a higher total sugars accumulation was recorded on corms from plants pruned 2 weeks before harvest in comparison with that on corms harvested 1 week after pruning and from unpruned plants. A significant improvement (p<0,05) has been obtained on organoleptic quality of corms as a result of pruning, independently of the variety of cocoyam, with higher and comparable preference records of 56,44 % and 59,83 % attributed to tubers from plants pruned 2 and 1 week respectively before harvest. Likewise, a record of 48,25 % was given to tubers from control plants. Keywords : Xanthosoma, variety, pruning, storage, quality
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烟化对马卡博块茎贮藏性能的影响(黄soma sagittifolium L.)
采用独立析因法,分别在采前1周和采前2周测定了采前抽采对两种马卡博品种(矢状黄soma sagittifolium L.)采后贮藏行为的影响。经过3个月的观察,在收获后2周进行抽吸,对macabo的体重减轻、发芽和腐烂有显著影响(p 0.05)。此外,发酵导致白马卡博块茎淀粉含量逐渐降低,随着贮藏时间的延长而增加。在收获前2周,与收获后1周的采蜜产品和非采蜜植物的块茎相比,来自采蜜植物的块茎的总糖积累水平更高。无论品种如何,抽脂也有助于显著改善椰子的减肥、发芽和腐烂(p 0.05)。= =地理= =根据美国人口普查,这个县的面积为。在保质期内,收获前2周修剪的玉米的总糖积累量高于修剪后1周和未修剪的玉米。无论cocoyam的品种如何,修剪后的corms的感官品质都有了显著改善(p< 0.05),分别在收获前2周和1周修剪后的块茎获得了较高和可比的偏好记录,分别为56.44%和59.83%。= =地理= =根据美国人口普查局的数据,这个城镇的总面积,其中土地和(1.2%)水。关键词:黄体,品种,修剪,贮藏,品质
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