Effect of potassium on potato microtuber production in vitro
1998
Naik, P.S. | Sarkar, D. (Central Potato Research Inst., Himachal Pradesh (India). Division of Genetics and Plant Breeding)
The role of potassium nutrition in microtuber production was investigated in two potato cultivars belonging to different maturity groups. Alterations were made in Murashige and Skoog (MS) medium to obtain seven concentrations of potassium (10, 15, 20, 25, 30, 35 and 40 mM), and their effects were studied on microtuber number, microtuber mass and harvest index. In late cultivar Kufri Sindhuri, an increase in potassium concentration beyond 25 mM decreased the number of microtubers. Potassium showed promoting effect on microtuber mass in both the cultivars. Maximum microtuber mass and harvest index were observed when the medium was supplemented with 40 mM potassium.
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