Influence of minisett sizes on dry matter accumulation and fresh tuber yield of white Guinea yam (<i>Dioscorea rotundata</i>)

Law-Ogbomo, Kolawole Edomwonyi; Remison, S. U.

doi:10.1111/j.1744-7348.2009.00330.x

Cited by 4 publications

(7 citation statements)

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“…Lusala tuber yield from minisetts was lower than that from tubers ( Figure 2). This tallies with cultivated yam studies where the size of planting material is correlated positively with yield (Kayode, 1984;Law-Ogbomo and Remison, 2009). Minisetts cut from the proximal end of tubers provided greater yield than those from other sections.…”

supporting

confidence: 74%

“…Visible shoot buds on tubers denote the end of the dormancy period (Awologbi and Hamadina, 2016). Larger whole tubers or larger minisetts of cultivated yams show greater emergence, and the resultant plants survive better than those from smaller ones (Aighewi et al, 2015;Enyi, 1972;Law-Ogbomo and Remison, 2009;Morse and McNamara, 2018). Proximal minisetts emerge better than those cut from distal and middle regions (Orkwor and Ekanayake, 1998;Passam, 1977).…”

Section: Discussionmentioning

confidence: 99%

“…The length of vines and number of leaves (Table 2) were greater from: tubers with visible shoot buds and small or large tubers (Experiment 1); re-tuberized tubers (Experiment 2); larger minisetts and/or those cut from the proximal end of tubers (Experiments 4 and 5); and minisetts from tubers with visible shoot buds (Experiment 5). Similarly in cultivated yams, bigger minisetts or tubers show better growth (Aighewi et al, 2015;Enyi, 1972;Law-Ogbomo and Remison, 2009;Morse and McNamara, 2018), and proximal minisetts provide greater growth than minisetts from middle and distal regions (Orkwor and Ekanayake, 1998;Passam, 1977). Lusala tuber yield from minisetts was lower than that from tubers ( Figure 2).…”

mentioning

confidence: 99%

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Propagation of lusala(Dioscorea hirtiflora), a wild yam, forin situandex situconservation and potential domestication

2020

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SummaryLusala (Dioscorea hirtiflora Benth. subsp. pedicellata Milne-Redh) is an important wild edible tuber foraged widely from natural forests in Southern Zambia, but at risk from overharvesting and deforestation. Its propagation was investigated in glasshouse studies to explore potential domestication and future in situ and ex situ genetic resources conservation. Almost all tubers planted with visible shoot buds produced vines, with no effect of tuber size on vine emergence or tuber yield. Few tubers without visible shoot buds at planting produced vines, but those that did not re-tuberized. The progeny provided good vine emergence and similar tuber yield, with vines from tubers produced by re-tuberization being more vigorous. Re-tuberization in the absence of vine emergence also occurred in other experiments. Minisetts cut from the proximal end of tubers provided better vine emergence (with more from 20-mm than 10-mm-long sections) and greater tuber yield than mid- or distal minisetts. Nodal stem cuttings rooted well, vined, and provided small tubers. This study shows that lusala can be propagated successfully from tubers, minisetts, nodal vine cuttings, or mini-tubers from nodal vine cuttings, for genetic resources conservation and/or domestication. Domestication is likely to be hampered by the long period required for vines to emerge and establish. More sustainable foraging, including re-planting in natural forests, is recommended to balance consumption of lusala in the region and promote its long-term conservation.

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supporting

confidence: 74%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Propagation of lusala(Dioscorea hirtiflora), a wild yam, forin situandex situconservation and potential domestication

2020

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“…It is widely used for making vegetable, chips, puri and fried vegetable for canning, dehydration and flour manufacture. Generally, researchers had discovered that larger seed yam produced better quality yam (Law-Ogbomo and Remison, 2009) [13] . However, if every farmer grows yam according to this standard, they will encounter shortage of yam planting material (Behera et.…”

Section: Introductionmentioning

confidence: 99%

“…al., 2009). About 10,000 of seed yams will be required for a hectare of yam plantation (Law-Ogbomo and Remison, 2009) [13] . There are major problem is the scarcity of planting materials for cultivation and low multiplication ratio i.e.1:6, therefore, released varieties take a long time to reach to the farmer.…”

Section: Introductionmentioning

confidence: 99%

Influence of different tuber weight on growth parameters of greater yam under Udaipur region

Meena¹,

Rathore²

2020

Int. J. Chem. Stud.

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The present investigation was conducted to evaluate the effectiveness of different weight of tuber to improving of growth and yield of greater yam (Dioscorea alata L.) under Udaipur region. The study was carried out at Horticulture Farm, Department of Horticulture, Rajasthan College of Agriculture, Udaipur during June, 2017 to March 2018. The experiment were comprising with different weight of tubers (25g, 50g, 75g, 100g, 125g, 150g, 175g, 200g, 225g and 250g) and three replications. The vegetative growth parameters were significantly influenced by different weight of tubers. Seven parameters of growth namely days to sprouting maximum speed of emergence, no. of leaves per vine after four months, vine length after four months, girth of vines after four months were observed. The data were collected to identify the growth rate of tubers. The results revealed that the highest tuber weight (250gm) showed the maximum growth performance days to sprouting, speed of emergence, no. of leaves per vine after four months, vine length after four months, girth of vines after four months, while sprouting percentage (50g,100g) and survival percentage (225g) also significantly affected by tuber weight. As a conclusion, largest tuber weight of yam showed great potential to cultivate larger yam seed which may be used for larger yam production or direct consumption.

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The influence of minisett size and time of planting on the yield of seed yam (Dioscorea Rotundata)

et al. 2020

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In traditional yam (Dioscorea spp.) production systems in West Africa, finding sole seed yam producers is rare and up to 30% of harvested tubers from the ware tuber crop is reserved to plant an equivalent area of the harvested crop during the next season. Many farmers typically must make a trade-off between food and seed in the use of available tubers. A study was carried out using a factorial experiment in a randomised complete block design to investigate the influence of planting different minisett sizes at different planting periods on the yield of seed yam with the aim of improving the availability of this expensive input and saving more ware tubers for food or sale. Results showed that by doubling or tripling the minisett size from 30 to 60 or 90 g, yields of seed yam increased by 61.1 and 103.3%, respectively. The 90 g minisetts had the highest values for all traits studied but had the least sett multiplication ratio. The early planted crop yielded 137% more than the late-planted crop. Significant interactions between minisett size, planting period and season were found. In 2016, although the highest yield of seed tubers was from early planted 90 g minisetts (35.6 t ha−1), the yield of early planted 30 g minisetts (23.8 t ha−1) was similar to those of 60 g planted mid-season (28.7 t ha−1) and 90 g planted late (20.0 t ha−1). To produce a high proportion of seed size tubers with less planting material, early planting of 30 g minisetts is recommended. Such practice will enhance seed tuber availability and food security by saving 1–2 t ha−1 of tubers that would have been used as seed instead of food.

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Influence of minisett sizes on dry matter accumulation and fresh tuber yield of white Guinea yam (Dioscorea rotundata)

Cited by 4 publications

References 3 publications

Propagation of lusala(Dioscorea hirtiflora), a wild yam, forin situandex situconservation and potential domestication

Propagation of lusala(Dioscorea hirtiflora), a wild yam, forin situandex situconservation and potential domestication

Influence of different tuber weight on growth parameters of greater yam under Udaipur region

The influence of minisett size and time of planting on the yield of seed yam (Dioscorea Rotundata)

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