ISSN:
1573-5060
Schlagwort(e):
Fragaria moschata
;
Potentilla fruticosa
;
intergeneric hybrids
;
embryo culture
;
parthenogenesis
;
aneuploidy
;
polyploidy
;
chromosome elimination
;
genetic variation
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Summary Crosses between Fragaria moschata (2n=42) and Potentilla fruticosa (2n=14) produced many seeds; about half of these germinated, but only nine plants were obtained from 554 seedlings. Five plants died without flowering, and four were vigorous but sterile. Four plants had the expected chromosome number (2n=28), one plant had 21 chromosomes, and four were aneuploid with 23, 24, 25 and 27 chromosomes respectively. Response to growth substances giving elongated stem internodes and swollen but not succulent receptacles provided evidence that two of the plant were hybrids. It is suggested that all nine plants originated from a normal fertilisation which was followed in some cases by chromosome elimination at an early stage of embryo development.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00035410
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