Plant Tissue Cult.& Biotech. 15(2): 157-166, 2005 (December)

In vitro Microtuberisation in Potato Obtained from Diverse Sources

M. J. Hossain

Tuber Crops Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh

Key words: Microtuberisation, Potato, Cultivars

Abastract

Seventeen potato cultivars of six diverse sources have been evaluated for their response to in vitro microtuberisation in presence or absence of light. Tuber initiation appeared first in the light and gave higher number of microtubers with higher total as well as mean weight than the dark. Among the cultivars, on the average, Patrones performed best for most of the parameters such as, days to tuber initiation, number of tubers, their weight per plant and mean tuber weight. In terms of microtuber production potential, Chamak was the poorest. Among the different sources, the Dutch and Canadian cultivars showed comparatively better performance in respect of microtuber production potential than the others. The local high yielding varieties were the least productive. The weight of microtubers per tube (534.6 mg) and mean tuber weight (104.3 mg) were also significantly higher in the light compared to dark (264 mg/tube and 87.8 mg/tuber, respectively). Microtuberisation potential is a variety-dependent character, which is largely influenced by environmental factor.

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