Open AccessChanges in oat (Avena sativa L.) flowers and inflorescences under conditions of copper deficiency
Author(s) -
E. Weryszko,
M. Ruszkowska,
A. Tomaszewski
Publication year - 2013
Publication title -
acta agrobotanica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 9
eISSN - 2300-357X
pISSN - 0065-0951
DOI - 10.5586/aa.1983.005
Subject(s) - gynoecium , stamen , inflorescence , avena , biology , pollen , botany , ovule , hermaphrodite , pollen tube , pollination
The anatomy and morphology of oat (Avena sativa L.) cv. 'Udycz Żółty' flowers and inflorescences formed at different copper levels (0, 5, 125 mg Cu/pot) was investigated. Considerable changes in the structure of the generative elements of oat flowers occurred under conditions of severe copper deficiency (Cu = 0): the stamens showed considerably smaller anthers, with changed shape; the anther chambers were significantly diminished in size and did not open after the formation of pollen; the pollen grains were sterile, deformed and of smaller dimensions. The pistils and ovules were also smaller; outgrowths on the pistil stigmas were smaller and of a different shape. A decrease in the dimensions of the inflorescences was observed in both early and later phases of development. In moderately copper-deficient plants (Cu = 5) the flowers were heteromorphic: functionally male - with great anthers and small pistils, functionally female - with great pistils and small anthers and hermaphrodite - with great pistils and anthers