Plant tissue culture letters
Online ISSN : 1884-7706
Print ISSN : 0289-5773
ISSN-L : 0289-5773
Effects of Sampling Dates of Runners on Plantlet Growth in Shoot Apex Culture of Strawberry (Fragaria×ananassa Duchesne)
Takahiro WAGATSUMAYoshitaro UN-NO
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1996 Volume 13 Issue 3 Pages 273-277


The effects of sampling timing of runners on plantlet growth were examined in shoot apex culture of strawberry ‘Belle rouge’.
Those plantlets sampled from June 23 to Aug. 4 differed in development from those plantlets sampled from Aug. 18 to Sept. 21. The plantlets sampled at the late term had fewer developed leaves and greater plant heights than those sampled at the early term.
Auxin activities of apical meristems of stock plants were examined using Avena bioassay. The auxin activity was highest on the first date of sampling and then declined. These results suggested that shoot apex excised at the early term would be desirable for in vitro culture.

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