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A morphological study of the development of the second inflorescences in strawberry ( Fragaria × ananassa Duch.)
Author(s) -
KUROKURA T,
INABA Y,
NERI D,
SUGIYAMA N
Publication year - 2005
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.2005.040087.x
Subject(s) - inflorescence , primordium , biology , fragaria , axillary bud , botany , bud , sepal , shoot , tissue culture , stamen , in vitro , pollen , biochemistry , gene
Summary To clarify the timing of the differentiation of the first and second inflorescences in strawberry ( Fragaria × ananassa Duch.), morphological changes on shoot apices during short day and low night temperature treatments were observed by scanning electron microscopy (SEM) and optical microscopy. Axillary buds just below the first inflorescence (axillary bud 1) became visible when sepal primordia of the primary flower were differentiated. By this time, other axillary buds had already developed. Axillary bud 1 developed four leaf primordia, and then a differentiated inflorescence at its summit. The phase transition of shoot apices from the vegetative to the reproductive phase may therefore trigger the differentiation of axillary bud 1 which is destined to develop into extension crowns.