Title

Studies in the Genus, Typha: I. Metaxenia, Xenia, and Heterosis. II. Interspecific Hybridization and the Origin of Typha Glauca. III. Autecology, with Special Reference to the Role of Aerenchyma

Date of Award

1962

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Biology

Advisor(s)

Norman Gillette

Keywords

Hybridization, Seed characteristics, Fecundity, Seed yield

Subject Categories

Botany

Abstract

The present study is intended to cast some light on the problem of T. glauca, but in so doing a slightly different experimental approach has been developed and applied. In the first part, intra-and interspecific hybridization of the three species, T. latifolia, T. angustifolia, and T. glauca, produced significant alterations in certain seed characteristics. There were color, dimensions of the external cellular layer, endosperm width, embryo width, and embryo length. ... In the second part, the relative fecundity of the species as measured by seed yield, together with external seed dimensions, seed weight and the above seed characteristics, were related to the issue of the origin of T. glauca. ...

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