Chromosome numbers in Compositae. XII, Heliantheae / Harold Robinson [and three others].

Format:

Book

Government document

Author/Creator:

Robinson, Harold, 1932- author.

Contributor:

Smithsonian Institution. Press, publisher.

Series:

Smithsonian contributions to botany ; no. 52.

Smithsonian contributions to botany ; number 52

Language:

English

Subjects (All):

Compositae--Cytotaxonomy.

Compositae.

Compositae--Genetics.

Plant chromosome numbers.

Genre:

Online resources.

Physical Description:

1 online resource (iii, 28 pages) : illustrations

Place of Publication:

City of Washington : Smithsonian Institution Press, 1981.

Summary:

Chromosome reports are provided for 145 populations, including first reports for 33 species and three genera, Garcilassa, Riencourtia, and Helianthopsis. Chromosome numbers are arranged according to Robinson's recently broadened concept of the Heliantheae, with citations for 212 of the ca. 265 genera and 32 of the 35 subtribes. Diverse elements, including the Ambrosieae, typical Heliantheae, most Helenieae, the Tegeteae, and genera such as Arnica from the Senecioneae, are seen to share a specialized cytological history involving polyploid ancestry. The authors disagree with one another regarding the point at which such polyploidy occurred and on whether subtribes lacking higher numbers, such as the Galinsoginae, share the polyploid ancestry. Numerous examples of aneuploid decrease, secondary polyploidy, and some secondary aneuploid decreases are cited. The Marshalliinae are considered remote from other subtribes and close to the Inuleae. Evidence from related tribes favors an ultimate base of X = 10 for the Heliantheae and at least the subfamily Asteroideae.

Notes:

Includes bibliographical references (pages 25-28).

Online resource, PDF version; title from cover (SI, viewed December 27, 2018).

Other Format:

Microfiche version: Chromosome numbers in Compositae, XII, Heliantheae

OCLC:

85811220