Effect of different growth regulators on in vitro micro-propagation of Kufri Frysona
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Abstract
In the present investigation, experiment was conducted for in vitro micro-propagation with different concentration of growth regulators in different explants Sprouts and Shoot tips of potato cultivar Kufri Frysona. The maximum survival percentage (40) of sprouts and (100%) of shoot tips were obtained when the explants were surface sterilized with 0.2% bavistin & 0.4% streptocyclin (45minutes) and 0.1% mercuric chloride (60seconds). Sterilized explants were inoculated on MS basal supplemented with various growth regulators and established successfully. The maximum shoot induction (62.5±1.44%) in 11.3±0.33 days and (74.0 ± 2.13 %) in 10.0 ± 0.50 days were reported on medium PM1 (BAP 0.25 mg/l) in sprouts and shoot tip explants respectively. The sprouted explants were further sub-cultured on MS media supplemented with various growth regulator alone and in combination for in vitro multiplication. In Kufri Frysona (11.2) shoots were obtained on MS medium fortified with 0.25mg/l BAP + 0.01mg/l IAA on 42th day of subculture. In vitro rooting was observed on MS basal medium supplemented with 2.0 mg/l NAA in Kufri Frysona after 10 days. Rooted plantlets were successfully hardened in green house using different types of potting mixture and finally transferred to field. The protocol will be very useful for large-scale production of disease free planting material of potato (S. tuberosum) in future.
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Growth regulators, In vitro, Kufri Frysona, Micro-propagation, Murashige and Skoog media
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