Research Article
Volume 6 Issue 4 - 2020
Field Performance of Seed Yam (Dioscorea rotundata Poir) Derived from Tissue Culture and Aeroponics Seedlings
Mavis Akom*, Stella Ama Ennin, Kingsley Osei, David Appiah-Kubi and Marian Dorcas Quain
CSIR - Crops Research Institute, Kumasi, Ghana
*Corresponding Author: Mavis Akom, CSIR - Crops Research Institute, Kumasi, Ghana.
Received: February 26, 2020; Published: March 03, 2020




Abstract

A major constraint to yam production in Ghana has been lack of quality seed. Tissue culture and aeroponics seedlings were explored for the rapid production of disease-free and high quality seed yam in large quantities. This preliminary study was conducted in a forest agro ecological zone in Ghana to assess the field performance of the growth and yield of seed yams generated from tissue culture and aeroponics seedlings. Four hundred tissue culture seedlings of TDr 95/19177 were planted in April 2015. The survival percentage from the seedlings reduced from 100% at planting to 42% at 159 days after planting (DAP). At harvest, 6 months after planting (MAP), the tubers were sorted into four different groups based on their sizes. Four hundred and eleven (411) numbers of tubers with a total tuber yield of 13.99 t/ha were harvested. Group 1 (0.33 kg) recorded the highest total tuber yield of 7.83 t/ha followed by group 2 (0.17 kg) 3.99 t/ha, group 3 (0.07) 1.69 t/ha and group 4 (0.02) 0.48 t/ha respectively. In March 2017, both TDr 95/19177 and Mankrong pona aeroponics yam seedlings were planted on the field. The number of survived seedlings reduced from 100% at planting to 38% and 45% for TDr 95/19177 and Mankrong pona respectively after 65 DAP. Harvesting the tubers at 8 months after planting (MAP) instead of 6 MAP, did not result in any major change in the harvested tuber number and yield. TDr 95/19177 yielded 48.12 t/ha and 50.75 t/ha from 429 and 413 numbers of tubers harvested respectively after 6 and 8 MAP. Mankrong pona yielded 41.67 t/ha and 22.67 t/ha from 19 and 11 number of tubers harvested respectively after 6 and 8 MAP. The average weight per tuber and total tuber yield were higher in plants derived from aeroponics compared to that from the tissue culture at the same time of harvest. The results suggested that both tissue culture and aeroponics system are useful means to ensure reliable source of clean seed yam for enhanced yam production. There is however the need for further studies on the factors that influence their establishment on the field.

Keywords: Seed Yam; Dioscorea rotundata; Tissue Culture; Aeroponics Seedlings; Ghana

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Citation: Mavis Akom., et al. “Field Performance of Seed Yam (Dioscorea rotundata Poir) Derived from Tissue Culture and Aeroponics Seedlings”. EC Agriculture 6.4 (2020): 67-75.

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