Effects of storage conditions on sprouting of microtubers of yam (Dioscorea cayenensis–D. rotundata complex)

Ovono, Paul Ondo; Kevers, Claire; Dommès, Jacques

doi:10.1016/j.crvi.2009.11.001

Cited by 8 publications

(4 citation statements)

References 31 publications

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“…For in vitro culture, when micro tubers where harvested and directly transferred on a new medium without hormones, the tubers rapidly sprouted. After one week, around 50% of the tubers have sprouted and after 8 weeks, all the tubers have sprouted (Ondo Ovono et al 2010). However, sprouting ability varied with stage of physiological maturity and size (Balogun, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…All of these macro propagation techniques are genotype-dependent and have no provision for cleaning infected seed yam; tuber dormancy remains a challenge (Balogun et al, 2014).Tissue culture plays an important role in the production and international exchange of disease free planting materials of yams in form of plantlets and potentially as micro tubers, but it has some obvious limitations. These include high costs, the need for skilled personnel and specialized equipment, and more crop cycles are required to produce large quantities of suitable seed size tubers for ware yam production (Ondo Ovono et al, 2010;Balogun and Gueye 2013;Aighewi et al, 2015;Otoo et al, 2016). In Nigeria, the traditional yam planting techniques and materials were reported to be the same in different parts, although each region applied varies tillage types (Odjugo, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Effects of planting methods and tuber weights on growth and yield of yam cultivars (Dioscorea rotundata Poir.) in Gabon

Ovono

Kevers

Dommès

2016

Int. Res. J. Agric. Sci. Soil

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A study was conducted to investigate the influence of planting methods and tuber weight on growth and yield of local yam cultivars obtained by the minisett technique from white yam (D. rotundata) in Gabon. Trials were carried out in 2014 and 2015 at the experimental ground of the Higher National Institute of Agronomy and Biotechnology, under natural conditions of lightness, temperature and relative humidity. Twenty-four weeks old mini tubers obtained from local cultivar MVA of D. rotundata were harvested, weighed and categorized (40-80g; 100-150g; 200-300g), and three planting methods (horizontal, oblique and vertical),arranged in ridges constituted the main factors. The experiment was laid out in Randomized Completely Block Design with eighteen treatments and two replications. Data pertaining to sprouting were recorded for 30, 60, 90 and 180 DAP, for tuber length (cm), tuber weight (Kg) and number of tubers per plant 270 DAP. Significant differences among tuber weight in all variables tested were observed. The larger tubers had better sprouting ability than the rest of the tuber weight. The methods of planting had no effects on yield and its components but they affect the depth and spread of tubers. Vertical planting produced deeper but more compactly arranged tubers while horizontal planting produced tubers which were shallower but more widespread. Slanting was intermediate for both depth and spread. The number and weight of tubers obtained from mini tubers planted out according to slanting method were significantly different (P< 0.05) from other planting methods. The production of seedlings from mini tuber is an improvement of traditional production of seed yam. Mini tubers must have at least 100-300 g and they should be planted slanting or vertically.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of planting methods and tuber weights on growth and yield of yam cultivars (Dioscorea rotundata Poir.) in Gabon

Ovono

Kevers

Dommès

2016

Int. Res. J. Agric. Sci. Soil

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“…Por consiguiente, los volúmenes de siembra/ha, no representan un aspecto relevante, desde el punto de vista fisiológico, para el almacenamiento y empacado del producto, y su posterior comercialización (Perez et al, 2015). Otros estudios realizados con micro tubérculos in vitro, y con diferentes tiempos de almacenamiento en condiciones estériles, demostró que a temperatura de 25° C, presentaron germinación más rápida (brote), que la experimentada a temperatura de 18°C (Ondo et al, 2010) Por otro lado los efectos de la temperatura de almacenamiento entre (20±8 C), 17±2 y 10±1.5 C, en ñames de Taiwaneses, experimentaron disminución en el contenido de fibra, con las tres temperaturas, pero el contenido de azúcar reductor disminuyo (Chou et al, 2005). Otra de las características importantes y dependiendo del uso del tubérculo se relaciona con la capacidad de pegado (almidones) debido al tiempo de almacenamiento, para ello se utilizaron 6 variedades de ñame, D. alata y D. rotundata, para el caso de la variedad D. rotundata, se observaron disminuciones en la viscosidad pico, y el tiempo de retención (Otegbayo, 2014).…”

Section: Merlano-portounclassified

Evaluación computacional de la calidad y rendimiento del ñame (Dioscórea rotundata) debido a factores ambientales de empaque y almacenamiento

Merlano-Porto,

Alvarado-Rodriguez,

Barroso-Críales

et al. 2023

Inf. tecnol.

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La presente investigación tiene como objetivo evaluar el impacto de la exposición a la luz solar, tipo de empaque y tiempo de embalaje sobre la pérdida de peso y germinación del ñame espino (Dioscórea rotundata). El almacenamiento de este tubérculo en poscosecha presenta limitantes en las utilidades del negocio exportador. Se aplica un diseño experimental factorial bajo un arreglo completamente al azar de 4𝑥3𝑥8, con 3 repeticiones. Los resultados muestran que dos de los tres tipos de empaques analizados, el recubrimiento con parafina y el empaque con bolsas de polietileno de baja densidad, presentan similitudes por menor pérdida de peso, con valores hasta el 1.9% del total del peso. En términos de germinación, se lograron obtener mejores resultados empleando recubrimiento con parafina, con retrasos en el proceso de germinación por 52 días de almacenamiento. Se concluye que la menor pérdida de peso se da cuando el producto es empacado con polímeros de baja densidad.

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“…Tis improves storage and makes it easier to transfer planting materials between locations. Farmers might exploit the "tuber dormancy" phase to fne tune their production in response to climatic, agronomic, or economic circumstances [29]. Te efective suppression of sprouting is critical for controlling the quality of corm planting material during storage.…”

Section: Corm Deteriorationmentioning

confidence: 99%

The Effect of the Taro Corm Type and Storage on Morphophysiological Deterioration and Early Growth in the Field

Diaguna,

Santosa,

Budiman

2023

International Journal of Agronomy

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Corm type correlates with corm size, which affects longevity and early growth in the field. Seed storage after harvesting is important to preserve viability and vigor. This study was conducted to determine the correlation between the corm type and storage period on corm deterioration, storage, vigor, and growth in the field. A factorial randomized complete block design (RCBD) with three replications was arranged, with the corm size (i.e., corm and cormels) and the storage period (i.e., 0, 2, 4, and 6 weeks). Corms undergo color changes faster than cormels do. The weight and diameter decreased by more than 10–30% after 4 weeks, while the length decreased by more than 10% after 6 weeks, and even the hardness decreased by 50% compared to that at 0 weeks. Corms were stored for 6 weeks, when the weight loss was lower than that of cormels. The corm sprouted after 2 weeks of storage. Corm resulted in a higher sprouting percentage than cormels. The corm type did not have a significant effect on growth vigor, but corm resulted in higher growth vigor than cormels after storage. The storage period leads to growth vigor loss. Weight, length, and diameter loss were positively correlated with sprouting and negatively correlated with hardness and growth vigor. This research recommends that the storage period of taro tubers before planting should be less than six weeks to optimize growth in the field.

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Effects of storage conditions on sprouting of microtubers of yam (Dioscorea cayenensis–D. rotundata complex)

Cited by 8 publications

References 31 publications

Effects of planting methods and tuber weights on growth and yield of yam cultivars (Dioscorea rotundata Poir.) in Gabon

Effects of planting methods and tuber weights on growth and yield of yam cultivars (Dioscorea rotundata Poir.) in Gabon

Evaluación computacional de la calidad y rendimiento del ñame (Dioscórea rotundata) debido a factores ambientales de empaque y almacenamiento

The Effect of the Taro Corm Type and Storage on Morphophysiological Deterioration and Early Growth in the Field

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