Effect of seed sett size on sprouting, shoot growth, and tuber yield of white guinea yam (<i>Dioscorea rotundata</i>)

Iseki, Kazuo; Matsumoto, Ryo

doi:10.1080/1343943x.2019.1667835

Cited by 9 publications

(10 citation statements)

References 9 publications

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“…Consequently, the SMR is higher for smaller setts, since the additional yield from larger setts is usually greater than the additional weight of the planting material. In another study, Iseki and Matsumoto (2019) found that tuber yield from 200 g setts was higher than that of 50 g setts. Still, the yield advantage was not sufficient to compensate for the additional cost of the larger setts.…”

Section: Discussionmentioning

confidence: 90%

Seed yam production from whole tubers versus minisetts

Aighewi

Maroya

Asiedu

et al. 2020

Journal of Crop Improvement

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Yam (Dioscorea rotundata Poir.) is a major staple and cash crop for millions of households in West Africa, where about 93% of the world crop is produced. The tuber serves as food and seed. Depending on the size, seed tubers are often cut into setts, minisetts, or planted whole. An experiment was conducted to investigate the effects of using whole tubers versus minisetts to produce seed yams. Six treatments constituted combinations of whole tubers and minisetts, and three tuber-size classes, viz., 30-59 g, 60-89 g, and 90-120 g (averaged and referred to as 45 g, 75 g, and 105 g, respectively). The experiment was conducted as a randomized complete block design with three replications. Results showed that plants from whole tubers emerged from the soil faster and yielded 48% more than those from minisetts. The mean yield of 105 g minisetts (18.3 t/ha) was statistically similar to that of 45 g whole seed (17.9 t/ha). Using 45 g whole seed would save about 2 t/ha of the harvested crop for use as food instead of seed. So, planting small whole tubers is more profitable than minisetts and is recommended to yam growers.

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Section: Discussionmentioning

confidence: 90%

Seed yam production from whole tubers versus minisetts

Aighewi

Maroya

Asiedu

et al. 2020

Journal of Crop Improvement

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“…The adoption of staking and ridge cultivation instead of the generally employed nonstaking and mount cultivation enabled higher plant density and improved land-use efficiency. However, the results also showed that tuber yield did not significantly differ among the sett sizes, although the plants from larger setts had larger plant biomass in early growth periods (Iseki & Matsumoto, 2020). This was because of the lower shoot growth rate of plants from larger setts during middle and late growth periods, which diminished the advantages of larger shoot biomass in early growth periods.…”

Section: Introductionmentioning

confidence: 79%

“…Next, the center part was cut into small pieces (seed setts), each with a skin surface where a shoot bud could emerge. Three seed sett sizes were used following Iseki and Matsumoto (2020): 50 g, 100 g, and 200 g. The setts were treated with a fungicide before planting. The setts were planted on 3 May 2018, and 10 May 2019, in plastic pots (12-cm diameter and 10-cm height) filled with topsoil (sandy loam, pH 7.6).…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

“…In our previous study, the use of small cuttings of tubers (setts) for cultivation of edible yam was tested to reduce the amount of seed tuber required (Iseki & Matsumoto, 2020). The results indicated that even a small sett size of 50 g could yield marketable tubers that were larger than 1 kg when the plant had enough shoot biomass at the early growth stage under staking and ridge cultivation.…”

Section: Introductionmentioning

confidence: 99%

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Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam

Iseki

Olaleye

Matsumoto

2021

Plant Production Science

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Mutual leaf shading can inhibit the growth of yam, reducing tuber yield. To improve light utilization, approximately 25% of leaves in a plant were thinned during the period of maximum shoot growth. Shoot dry weight was estimated every two weeks using a non-destructive method. Leaf thinning caused higher shoot growth rates (SGRs) after thinning, while control plants had SGRs close to zero. The higher SGRs in the thinned plants was attributed to an increase in new leaf development. This indicates that the plateau in shoot growth commonly observed during the late growth period is reversible and could be improved artificially. In thinned plants, there was a positive relationship between shoot dry weight and SGR, although no such relationship was observed in control plants after the middle growth period. This positive correlation indicates a higher shoot growth per unit leaf area in the thinned plants than in the control plants, presumably due to improved light utilization and a higher photosynthetic rate of new leaves. However, leaf thinning reduced tuber yields, presumably because of a lower total carbon assimilation per plant and greater growth competition between shoots and tubers. High correlations between shoot dry weight and tuber yield indicated that a high shoot biomass is more important than improving light utilization for increased tuber yields.

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“…The analysis showed that the increase in tuber weight also increased the number of shoots formed at each observation. This is related to the adequacy of energy reserves in the tubers to support shoot growth (Iseki and Matsumoto, 2020). In the observation of 35 days of age, the increase in the number of shoots was 1.90 shoots (58.64%) at a tuber weight of 115-125 g compared to the number of shoots at a tuber weight of 25-35 g.…”

Section: Number Of Sproutsmentioning

confidence: 99%

Immersion in 6-Benzylaminopurine for Dormancy Release and Initiation of Potato Sprouts at Various Tuber Weight and Storage Duration

Siregar

Turnip

Damanik

2021

J. Agron. Indonesia

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One of the main obstacles in providing quality potato seed tubers is the long dormancy period of the potato seeds. A study that explores this has been carried out to elucidate the response of dormancy release and initiation of potato sprouts to the differences in tuber weight and storage duration before immersion in cytokinin (6-benzylaminopurine). The study was conducted at the seed warehouse UPT Horticulture Parent Seed Kutagadung Berastagi, Department of Food and Horticulture of North Sumatra Province, from November 2018 to January 2019. The research was carried out with a factorial completely randomized design with two factors, namely (i) tuber weight, consisting of 4 levels [25-35 g, 55-65 g, 85-95g, and 115-125 g]; and (ii) tuber storage duration before immersion in 6-benzylaminopurine (BAP) solution, consisting of 5 levels [control (without immersion), 1, 15, 30, and 45 days after harvest]. Tuber weight, storage duration before immersion, and the interaction of the two factors showed significant effects in dormancy breaking time, germination percentage, germination rate, number of sprouts, and length of sprouts. The number and length of the sprouts increased with the increasing tuber weight and storage duration before immersion in BAP. Keywords: cytokinin, germination, Solanum tuberosum L., tuber seeds

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Effect of seed sett size on sprouting, shoot growth, and tuber yield of white guinea yam (Dioscorea rotundata)

Cited by 9 publications

References 9 publications

Seed yam production from whole tubers versus minisetts

Seed yam production from whole tubers versus minisetts

Effect of leaf thinning on shoot growth and tuber yield of white Guinea yam

Immersion in 6-Benzylaminopurine for Dormancy Release and Initiation of Potato Sprouts at Various Tuber Weight and Storage Duration

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