Literature DB >> 14163778

PREFERENTIAL SEGREGATION OF CHROMOSOMES FROM A TRIVALENT IN HAPLOPAPPUS GRACILIS.

R C JACKSON.   

Abstract

Crosses between plants of Haplopappus gracilis (n = 2) and a race with three pairs of chromosomes (tribivalens) gave a highly fertile five-chromosome hybrid. In both races the chromosomes with the satellites appear homologous, but the other two tribivalens chromosomes pair with the A chromosome (without a satellite) of H. gracilis. Disjunction from the resulting trivalent is preferential: the A chromosome goes to one pole and the two tribivalens chromosomes to the other.

Entities:  

Keywords:  CHROMOSOMES; EXPERIMENTAL LAB STUDY; HYBRIDIZATION; PLANTS

Mesh：

Year:  1964        PMID： 14163778     DOI： 10.1126/science.145.3631.511

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  4 in total

1.  Ecophysiological studies of sonoran Desert plants : V. Photosynthetic adaptations of Machaeranthera gracilis, a Winter annual.

Authors:  R K Monson; S R Szarek
Journal:  Oecologia       Date:  1979-08       Impact factor: 3.225

2.  A familial variant of chromosome 9.

Authors:  C G Palmer; J Schroder
Journal:  J Med Genet       Date:  1971-06       Impact factor: 6.318

3.  Life cycle characteristics of Machaeranthera gracilis (Compositae) in desert habitats.

Authors:  Russell K Monson; Stan R Szarek
Journal:  Oecologia       Date:  1981-05       Impact factor: 3.225

4.  Aneuploidy, structural chromosome changes, and DNA amounts in the annual taxa of the Haplopappus spinulosus complex.

Authors:  R C Jackson; C F Crane; J S Johnston; J R Ellison; H J Price
Journal:  Chromosome Res       Date:  1993-05       Impact factor: 5.239
  4 in total

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