Minituber Production Potential of Different Micro Propagated Material under In Vivo Conditions of North Central India

摘要

The experiment was conducted on performance of different micro propagated material under in vivo conditions during 2009-10 and 2010-11. Three types of above mentioned micro-propagated seed material viz., micro-plants, <3g minitubers obtained from microplants, and <3 g microtubers of popular variety Kufri Lauvkar was under this study. Experiment was planted in randomized block design and replicated four times. Significantly higher germination/establishment was reported in <3 g minitubers obtained frommicroplants (93.1 %) followed by <3 g microtubers (76.3%) over microplants (48.1%). Significantly higher stems per plant was recorded in <3 g minitubers obtained from microplants (1.2) over other two types of micropropagated materials recorded single stem per plant. By weight,significantly highertuber yield was recorded in <3 g minitubers obtained from microplants (2.88 kg per m2) followed by <3 g microtubers (1.96 kg per m2) and least in microplants (1.23 kg per m2). By weight significantly higher per cent of <3 g minitubers was recorded in microplants (4.1) and <3 g microtubers (4.6) over recycled minitubers (1.4).Health wise all the samples from the three types of rnicropropagated materials were found to be free from five major potato viruses (X, S, M, Y and A).Micro plants/extremely small sized microtubers which cannot be planted directly in field and can be multiplied (i.e. <3 g minitubers obtained from microplants/microtubers) successfully further one time under controlled conditions for improving the size of mini-tubers without any compromise on the health standards of the basic seed material.