Aspen Bibliography

Experimental induction of haploid parthenogenesis in Black Cottonwood (Populus trichocarpa T. & G. ex Hook.)

Document Type

Article

Journal/Book Title/Conference

Silvae Genetica

Volume

20

Issue

1/2

First Page

15

Last Page

25

Publication Date

1971

Abstract

Haploids are rare among forest trees. The reasons for this are that male or female gametes rarely undergo embryogeny without prior fertilization and, if they do, the haploid sporophytes thus generated typically grow slowly and will eventually be eliminated by competition from diploids. If not physically eliminated, haploids encounter serious problems at meiosis that reduce their fitness. Thus, it is not surprising that the first haploid forest tree was reported only recently (TRALAU, 1957), and in a species with effective vegetative propagation (Populus tremula L.).

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