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Journal of Applied and Natural Science
An International Journal | Print ISSN: 0974-9411 | Online ISSN: 2231-5209
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Abstract
Journal of Applied and Natural Science 7 (1): 335–338 (2015)
Effect of cultivars and seed size on field performance of potato micro-tubers in North Eastern Himalayan region in India
A. K. Srivastava*, S. K. Yadav1, L. C. Diengdoh1, R. Rai1 and T. K. Bag1
Indian Council of Agricultural Research- Indian Institute of Pulses Research, Kanpur-208024 (U.P.), INDIA
1Indian Council of Agricultural Research- Central Potato Research Station, Shillong-793009 (Meghalaya), INDIA
*Corresponding author. E-mail: bhu.avinash@gmail.com
Abstract : The present study was carried out at Central Potato Research Station, Shillong during 2013 and 2014 to assess the growth and yield performance of three grades of in-vitro produced micro-tubers viz. >8 mm, 4-8 mm and <4 mm of two potato (Solanum tuberosum) cultivars namely Kufri Girdhari and Kufri Megha under field planting conditions. The experiment was laid out in a randomised block design with four replications using a common spacing of 50 × 20 cm. The larger grade micro-tubers generally exhibited better physiological growth as well as yield parameters. The larger sized micro-tuber (>8 mm) showed significantly superior plant survival, canopy cover, plant height, number of compound leaves per plant, number of stems per plant and plant vigour followed by 4-8 mm grade and <4 mm grade micro-tubers. Similar trend was observed for all the yield parameters. Among varieties, Kufri Girdhari out performed Kufri Megha in all the growth and yield parameters in all the micro-tuber grades. Thus both micro-tuber size and genotype influenced the field performance. The overall finding indicates that micro-tubers irrespective of the size for both the varieties can produce mini-tubers successfully under direct field conditions in the NEH region which will facilitate quality seed production.

Keywords :Field performance, Micro-tuber grades, NEH India, Potato micro-tubers
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