Effect of auxins on root development in yam (<i>Dioscorea rotundata</i>) vine

Acha, I.A.; Shiwachi, Hironobu; Asiedu, Robert; Akoroda, M. O.

doi:10.1002/ts.140

Cited by 20 publications

(18 citation statements)

References 4 publications

(1 reference statement)

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“…Rooted vine cuttings at 20cm long and with 1 to 3-nodes [14][15][16] produced mini-tubers of 50-600g after 8 months giving a 1:30 propagation ratio. Other high propagation ratio technologies exist but are not being used for yam [17].…”

Section: Introductionmentioning

confidence: 99%

Yam Propagation Using ‘Aeroponics’ Technology

Balogun

Asiedu

Lava-Kumar

2014

ARRB

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Aims: To study yam propagation and seed yam tuber production in aeroponics system. Study Design: The experiment was conducted in a randomized complete block design and treatments were replicated three times. Short Research ArticleAnnual Research & Review in Biology, 4(24): 3894-3903, 2014 3895 genotypes were TDr 95/18544 and TDr 89/02665 for survival at 90 days after vine planting and percentage of plant producing bulbils in the aeroponics system respectively. Conclusion: This study revealed that yam genotypes performed differently in aeroponics system for vine rooting and production of mini-tubers and bulbils.

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Section: Introductionmentioning

confidence: 99%

Yam Propagation Using ‘Aeroponics’ Technology

Balogun

Asiedu

Lava-Kumar

2014

ARRB

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“…While varietal differences in the rooting of vines have been noted, Acha et al (2004) observed significant increase in the number of roots after treatment with indolebutyric acid. Cabanillas and Martin (1978) noted that using single node cuttings, multiplication of yams could be several hundred fold in 1 year.…”

Section: Modern Methods Of Seed Yam Productionmentioning

confidence: 90%

“…Rooted vine cuttings of 20 cm length with 1 to 3-nodes (Acha et al 2004;Kikuno et al 2007;Agele et al 2010) produced mini-tubers of 50-600 g after 8 months giving a 1:30 propagation ratio. Vine cuttings for tuber production should be taken from healthy plants aged between 30 and 60 days after shoot emergence, and before tuber development starts (Okonmah 1980;Kikuno et al 2007).…”

Section: Modern Methods Of Seed Yam Productionmentioning

confidence: 99%

Improved propagation methods to raise the productivity of yam (Dioscorea rotundata Poir.)

et al. 2015

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White Guinea yam (Dioscorea rotundata Poir.) is an important staple to millions of people in West Africa. Obtaining good quality planting material for yam cultivation is a major challenge. Multiplication ratios are low, and seed tubers are prone to contamination with pests and pathogens in the traditional systems of production. Some approaches to producing quality seed of yam are as follows: farmers select small whole tubers from a ware crop harvest; stimulate the production of seed tubers by 'milking' ware tubers while the leaves of the plant are still green (double harvest system); cut ware tubers into setts about the same sizes as regular seed tubers; or use the 'Anambra' system where smaller setts are cut and used to produce seed tubers. New methods that have been developed to address some of the challenges of quantity and quality of seed tubers are not yet widely applied, so farmers continue to use traditional methods and save seed from a previous harvest to plant the ware crop. This document presents an overview of traditional and modern methods of seed yam production and gives a perspective for the future. Among the modern methods of seed yam production, only the minisett technique, which uses 25-100 g tuber pieces, is currently used at farmer level, although on a limited scale. While tissue and organ culture techniques are the most rapid methods of multiplying disease free propagules, their limitations include high costs, need for skilled personnel and specialized equipment. The aeroponics and temporary immersion bioreactor methods of producing seed yam are relatively new, and still need more research. To build and sustain a viable seed yam production system, a multiplication scheme is required that combines two or more methods including tissue culture for cleaning the seed stock.

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“…More recently, rooting of 20 cm long 3-node vines (Acha et al, 2004;Kikuno et al, 2007;Agele et al, 2010) produced minitubers of 50 to 600 g after 8 months giving a 1:22 propagation ratio.…”

Section: Existing Seed Yam Production Systemmentioning

confidence: 99%

“…The layering of vines into soil for tuber production while on the mother plant is unpractical for farm use although up to 1:80 propagation ratio is possible (Acha et al, 2004). All of these macropropagation techniques are genotype-dependent, have no provision for cleaning infected seed yam and tuber dormancy remains a challenge.…”

Section: Existing Seed Yam Production Systemmentioning

confidence: 99%

Status and prospects for improving yam seed systems using temporary immersion bioreactors

Balogun¹,

Maroya²,

Asiedu³

2014

Afr. J. Biotechnol.

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Yam production is constrained by scarcity of clean seed, pests, diseases and low soil fertility in the informal seed system, which is still operational, causing up to 90% yield losses. Although meristem culture can be effective for producing healthy seed yam, its use is limited by slow rate of regeneration and propagation in conventional tissue cultures. In most crops tested, temporary immersion bioreactor systems (TIBs) increased propagation rates. To determine the potential of TIBs in improving the yam seed system, 23 databases were consulted and three returned a total of eight publications with only 2 for Dioscorea rotundata-cayenensis. Both plantlets and microtubers can be produced in TIBs, which will facilitate production of quality breeder, foundation and certified seeds and fast-track genetic improvement and the evolution of a formal from informal seed production system. Control of contamination, direct use of field explants, culture of micro-explants like immature embryos and anthers, increasing the size of microtubers produced and standardization for various economically important yam genotypes are knowledge gaps that require immediate research attention. No report has put a cost on yam TIBs, but it will be necessary to use cost-effective TIBs to encourage integration public-private partnerships into emerging formal seed system.

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Effect of auxins on root development in yam (Dioscorea rotundata) vine

Abstract: Treatment with indolebutyric acid (IBA) significantly increased the number of roots produced by vine cuttings of ten Dioscorea rotundata cultivars. Some cultivars could be propagated by layering, especially with IBA treatment, but layering does not appear to be feasible for use on farms.

Cited by 20 publications

References 4 publications

Yam Propagation Using ‘Aeroponics’ Technology

Yam Propagation Using ‘Aeroponics’ Technology

Improved propagation methods to raise the productivity of yam (Dioscorea rotundata Poir.)

Status and prospects for improving yam seed systems using temporary immersion bioreactors

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