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Bestseller
BestsellerE-book
Author Wanntorp, Livia.

Title Flowers on the Tree of Life.

Publication Info. Cambridge : Cambridge University Press, 2011.

Item Status

Description 1 online resource (328 pages).
text file
Series Systematics Association Special Volume Series
Systematics Association special volume.
Contents Cover; Title; Copyright; Contents; Acknowledgements; 1 Introduction: Establishing the state of the art -- the role of morphology in plant systematics; 1.1 Outlook; 1.2 Contents; 1.3 References; 2 Spatial separation and developmental divergence of male and female reproductive units in gymnosperms, and their relevance to the origin of the angiosperm flower; 2.1 Introduction: aims and terminology; 2.2 The enlarged phylogenetic gap between extant angiosperms and extant gymnosperms; 2.3 Evolutionary-developmental genetic models of the origin of the (hermaphrodite) flower.
2.3.1 B- and C-class MADS-box genes2.3.2 The LEAFY gene family; 2.3.3 'Mostly Male' theory; 2.3.4 'Pleiotropy Constraint' model; 2.3.5 'Out of Male' and 'Out of Female' co-hypotheses; 2.3.6 'Further Out of Male' hypothesis; 2.3.7 Selecting among the competing hypotheses; 2.4 Spanners in the works: erroneous assumptions and a predominance of clinal expression patterns; 2.4.1 Location of expression; 2.4.2 Teratological phenotypes; 2.5 Gender separation is implicated in the origin and early diversification of the (gymnospermous) seed-plants.
2.5.1 Did male-female segregation permit the origin of the seed?2.5.2 Architectural ambiguities obscure sexual systems in fossils; 2.5.3 Divergence of developmental programming in male and female organs; 2.6 Are hermaphrodite bennettites a phylogenetic red herring?; 2.7 Knowledge of gender control in extant gymnosperms and angiosperms remains inadequate; 2.8 Conclusions; Acknowledgements; 2.9 References; 2.10 Note added in proof; 3 New flowers of Laurales from the Early Cretaceous (Early to Middle Albian) of eastern North America; 3.1 Introduction; 3.2 Materials and methods.
3.2.1 Collection and preparation of the fossil material3.2.2 Phylogenetic analyses and interpretations; 3.3 Description of fossil flowers; 3.3.1 Bisexual flower bud (PP53716); Systematics; Description; 3.3.2 Flower fragments (PP43735, PP43751, PP53734); Systematics; Description; 3.4 Discussion; 3.4.1 General systematic relationships of the fossils; 3.4.2 Interpretation of the fossil Cohongarootonia hispida and its systematic affinity; 3.4.3 Interpretation of the fossil Powhatania connata and its systematic affinity.
3.4.4 Comparison with other lauralean reproductive structures from the Cretaceous3.5 Conclusions; Acknowledgements; 3.6 References; 4 Tracing the early evolutionary diversification of the angiosperm flower; 4.1 Introduction; 4.2 From the base of the angiosperms to mesangiosperms; 4.2.1 Magnoliidae; 4.2.2 Monocots; 4.2.3 Eudicots; 4.3 Conclusions; Acknowledgements; 4.4 References; 5 Changing views of flower evolution and new questions; 5.1 Flowers in phylogenetic and evolutionary studies; 5.2 Homology; 5.3 Alpha- and omega-morphology.
Summary Explores ongoing flower morphological and ontogenetic research and its impact on our understanding of floral evolution and relationships.
Bibliography Includes bibliographical references and indexes.
Local Note eBooks on EBSCOhost EBSCO eBook Subscription Academic Collection - North America
Subject Flowers -- Morphology.
Flowers -- Morphology.
Flowers -- Evolution.
Flowers -- Evolution.
Flowers.
Angiosperms -- Morphology.
Angiosperms -- Morphology.
Angiosperms.
Angiosperms -- Evolution.
Angiosperms -- Evolution.
Genre/Form Electronic books.
Electronic books.
Added Author Ronse De Craene, Louis.
Other Form: Print version: Flowers on the tree of life. Cambridge ; New York : Cambridge University Press, 2011 9780521765992 (DLC) 2011019851 (OCoLC)721888557
ISBN 9781139137713
1139137719
9781139145046 (electronic book)
1139145045 (electronic book)
1139141724 (electronic book)
9781139141727 (electronic book)
9781139013321 (electronic book)
1139013327 (electronic book)
1283316633
9781283316637
9780521765992
0521765994
Standard No. 9786613316639