Checking-out how Yam vine cuttings with one node-bud point will grow when planted in natural topsoil in a screen house.

Overview

Yam planting is an important activity in African farming systems. This work is showing the effectiveness of using single-node vine cuttings to provide an already growing yam plants, which could be transplanted to the farmlands to yield seed yam that can subsequently yield ware yam. This was previously thought impossible as yam farming involves cutting yam tubers into plant-able small sizes, but this article and others like it have shown that it is possible to use alternative planting materials like single node vine cuttings. we have use screen house experiments to confirm vine-cuttings survive-ability and response variations among different yam varieties.

Summary

Our findings show that single-node vine cuttings could provide an already growing yam plants, which could be transplanted to the farmlands by farmers, to yield seed yam that can subsequently yield ware yam. Thus, the old strategies of cutting yam tubers for planting, thereby competing with availability of yam tubers to consumers, are no longer needed as much more better alternatives as vine cuttings propagation among others are already available as better alternative that is gradually being appreciated.

Author Comments

Dr Afolayan A, PhD
Dr Afolayan A, PhD
National Center for Genetic Resources and Biotechnology (NACGRAB)
Dr
Ecology and Environmental Biology
Ibadan, oyo | Nigeria
Doing this research and writing this article has been a great pleasure as it has co-authors with whom I have had long standing relationships and collaborations. This article also lead to helping solution-seeking farmers contacting me and ultimately to a greater involvement in Yam Improvement for Income and Food Security in West Africa through NACGRAB.Dr Afolayan A, PhD

Comparative Response of Five Varieties of Dioscorea Species (Yam) to Rapid MicroPropagation Using Single Node Vine Cuttings: A Measure Towards Income Generation, Food Security and Biodiversity Conservation in Nigeria

Proceedings of 6th NSCB Biodiversity Conference; Uniuyo 2018

AFOLAYAN, Adedotun Onoyinka et al. 2018. Comparative Response of Five Varieties of Dioscorea Species (Yam) to Rapid MicroPropagation Using Single Node Vine Cuttings: A Measure Towards Income Generation, Food Security and Biodiversity Conservation in Nigeria. Proceedings of 6th NSCB Biodiversity Conf

Abstract: Different micro-propagation techniques have been developed for yam varieties (Dioscorea sp.). Owing to the various challenges encountered in the process of regeneration and multiplication of the vegetative parts of yam in vitro, it becomes imperative to source for alternative but easily achievable and cheap method of micropropagation, hence the vine cutting experiment. Five certified disease-free varieties of Dioscorea sp. tagged by and collected from IITA/YIIFSWA Bio-Science Laboratory were utilised for the study. These are TDr 89/ 02665, TDa 98/01176, TDr 95/19177, Pona and TDr 95/18544. After acquisition, these were established in the screenhouse by planting them in potting bags using pasteurized topsoil. Successful growth was achieved by constant irrigation of the potted plants and the vines were supported with sterile twines for co-ordinated twirling. Ten (10) single node cuttings each were collected from each of the yam variety pots and sub-planted into smaller pasteurized topsoil pots. Quadruple replicates of these were done. The results indicated that while all the varieties’ nodal cuttings responded positively, the best response was gotten from TDa 98/01176, followed by TDr 89/ 02665, TDr 95/18544, TDr 95/19177 and Pona in that order. On the average, the fastest response in terms of days to emergence of new shoot and new aerial branches was obtained in TDr 98/01176 (11.375 ± 1.493 days and 31.250 ± 2.278 days respectively) while the slowest response was gotten from TDr 95/19177 (12.875 ± 1.436 days) for days to emergence of new shoot and Pona (43.750 ± 2.385 days) for days to emergence of new aerial branches. The average number of new aerial branches ranged from 2.250± 0.433 in Pona to 5.500± 1.118 in TDa 98/01176.Overall, the percentage survival follows the order Pona>TDr 89/02665>TDr 95/18544>(TDa 98/01176 = TDr 95/19177). Keywords: Micro-propagation, Yam, Topsoil, Vines, Node, Potting
May 2018
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