Abstract
Abstract
Gynoecium and fruit micromorphology and anatomy were studied using light microscopy in three species of Campanuloideae belonging to the tribes Cyanantheae (
Platycodon grandiflorus
), Wahlenbergieae (
Jasione montana
), and Campanuleae (
Adenophora liliifolia
) of the native and cultivated flora of Ukraine, to elucidate structural adaptations for fruit dehiscence. The studied species differed in flower/fruit orientation, carpel number, ovary insertion, and capsule-opening position, and the information provided a background for the discovery of common anatomical features influencing fruit dehiscence. In the studied species, the synascidiate and symplicate zones in the ovary and prominent placentae were found to be located near the mid-region of the ovary. The distinct innervation of the ovary wall and ovules was described. In
P. grandiflorus
, the septa and fruit wall contained a lignified parenchyma in a subepidermal position, while in
J. montana
and
A. liliifolia
, lignification was observed only in proximal portions of the septa, above the placenta (
J. montana
), or was noted as a narrow strand from the ovary base to the mid-region, called “axicorn” (
A. liliifolia
). In all the studied species, unlignified endocarpium was detected. The semi-inferior capsule of
P. grandiflorus
has been defined as a capsule of the
Forsythia
-type, with a sclerenchymatous layer in the inner zone of the mesocarpium. In
J. montana
and
A. liliifolia
, a new histogenetic type of capsule is described as
Campanula
-type, without lignified layers in the fruit wall and with lignified tissue in the septa, which enabled dehiscence. Our study proposed for the first time the classification of the capsules found in the studied species based on the development of openings in the superior or inferior regions of the fruits. The upright fruits of
P. grandiflorus
and
J. montana
reveal incomplete dorsiventral dehiscence in the superior region of the fruit, while dehiscence of pendent fruits of
A. liliifolia
is hippocrepiform-septifragal interlocular and occurs in the inferior region of the fruit at its base, as revealed previously in
Campanula latifolia
fruit.
Subject
Plant Science,Agronomy and Crop Science,Ecology, Evolution, Behavior and Systematics
Reference52 articles.
1. Биохимическая характеристика растений бубенчика лилиелистного Adenophora lilifolia (L.) A. DC. в связи с перспективой введения в культуру;Андреева [Andreeva];Agricultural Biology,2008
2. Morphological and anatomical structure of Campanula latifolia L. fruits;Andreychuk;Studia Biologica,2019
3. Actual state of carpological studies in the family Campanulaceae Juss. with regard to its systematics;Andreychuk;Studia Biologica,2020
4. Morpho-anatomical structure and development of fruit in Asyneuma canescens (Campanulaceae);Andreychuk;Regulatory Mechanisms in Biosystems,2020
5. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV;The Angiosperm Phylogeny Group;Botanical Journal of the Linnean Society,2016
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献