biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 45:39-43, 2002 | DOI: 10.1023/A:1015167616960

Brassinolide Effect on Growth of Apical Meristems, Ethylene Production, and Abscisic Acid Content in Potato Tubers

N.P. Korableva1, T.A. Platonova1, M.Z. Dogonadze1, A.S. Evsunina1
1 Institute of Biochemistry, Russian Academy of Sciences, Moscow, Russia

Treatment of intact potato (Solanum tuberosum L., cv. Nevskii) tubers with 24-epibrassinolide (EB) resulted in prolonged deep dormancy, increased production of ethylene and higher contents of free and bound abscisic acid (ABA) in buds. EB at the most efficient concentration 0.021 mg dm-3, applied immediately after tuber harvest, inhibited sprouting by 36 - 38 d, increased ethylene formation after 1 and 7 d of storage by almost 300 and 150%, respectively, and increased the content of both free and bound ABA during the whole period of storage (on average by about 80%). Electron microscopic and morphometric studies showed that EB brings about a decrease in cell volume in tunica and all types of meristems and an increase in the number of vacuoles, accompanied by a decrease in their volume.

Keywords: Solanum tuberosum L.; tuber dormancy
Subjects: brassinolide, ethylene, ABA; dormancy; 24-epibrassinolide; ethylene production, potato tubers; potato, brassinolide effects; Solanum tuberosum; tuber, deep dormancy after epibrassinolide treatment

Published: March 1, 2002  Show citation

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Korableva, N.P., Platonova, T.A., Dogonadze, M.Z., & Evsunina, A.S. (2002). Brassinolide Effect on Growth of Apical Meristems, Ethylene Production, and Abscisic Acid Content in Potato Tubers. Biologia plantarum, 45(1), 39-43. doi: 10.1023/A:1015167616960
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