Abstract
The effect of paclobutrazol on in vitro rooting and growth of sour cherry (Prunus cerasus) rootstock CAB 11E clone, of S 749 × S 1490 (Prunus persica × Prunus kansuensis) hybrid rootstock, and of pear (Pyrus communis), cv. Abbé Fetel is reported.
PP333 increased rooting of S 749 × S 1490 and of Abbé Fetel, particularly at a concentration of 0.5 mg/l (a.i.); moreover, it induced a rooting percentage as high as auxin in the former and hastened rooting of the latter. By contrast, paclobutrazol did not affect root production of 11 E.
PP333-treated plants had shorter and thicker roots than controls but similar survival rates during acclimatization. Otherwise they grew less than controls during the first part of the acclimatization phase.
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Abbreviations
- BA =:
-
6-benzyladenine
- IBA =:
-
indole-3-butyric acid
- PP333 =:
-
paclobutrazol = (2RS,3RS)-1-(-4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol
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Part of the results referring to S 749 × S 1490 (P. persica × P. kansuensis) rootstock were presented at the meeting on “Controllo della fruttificazione delle piante da frutto”, Bologna, Italy, June 1986, and were published in the Riv. Ortoflorofrutt. It. 70 (6)(1986). This research was funded in part by the Italian Ministry of Education (M.P.I. 60%).
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Marino, G. The effect of paclobutrazol on in vitro rooting, transplant establishment and growth of fruit plants. Plant Growth Regul 7, 237–247 (1988). https://doi.org/10.1007/BF00037633
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DOI: https://doi.org/10.1007/BF00037633