Naslov
Starch accumulation as a marker for microtuberization in potato (Solanum tuberosum)

Autori
Pevalek-Kozlina, Branka ; Berljak, Jasna

Izvornik
Biologia (0006-3088) 52 (1997), 4; 553-559

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
microtuberization; Solanum tuberosum L. cv. ˘Bintje˘; starch accumulation

Sažetak
The first sign of starch accumulation in potato axillary buds as an indicator of microtuber induction and initiation in different photoperiod and temperature conditions was studied. Single-node potato (Solanum tuberosum cv. `Bintje`) explants were inoculated on tuberization medium (MS with 8% sucrose and 22 ľM BA) and on MS medium with 8% sucrose (control medium). Cultures were incubated at 20 oC in short day conditions and in darkness, and at 26 oC in long day conditions and in darkness. Starch deposition occured on day three in basal part of axillary buds cultured on tuberization medium at 20 oC and 12 hrs photoperiod or in darkness. In axillary buds incubated on tuberization medium at 26 oC and 16 hrs photoperiod starch began to accumulate on day eight, and in darkness on day twelve. In explants grown under same conditions on control medium starch deposition was not observed after two weeks. A higher temperature delayed initiation and development of microtubers, especially in the darkness, despite if the tuber-inducing medium was used. The illumination, even a 16 hrs photoperiod, was promotive for starch deposition and tuber initiation, respectivelly.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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