Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: CHR-104-298

[Submit comment/correction]

Reference	CHR-104-298
Title	Further insights on chromosomal pairing of autopolyploids: a triploid and tetraploids of rye
Journal	Chromosoma
Year	1995
Volume	104
Pages	298-307
Author	Santos J [ Show all 7 ]
Abstract	Chromosomal pairing of one triploid and three tetraploid plants of rye, Secale cereale, was analyzed by electron microscopy in surface-spread prophase I nuclei and compared with light microscopic observations of metaphase I cells Prophase I is characterized by: (i) the weak alignment showed by the three or four unsynapsed or partially homologous synapsed axes; (ii) the low number of pairing partner switches (PPSs) displayed by both trivalents and quadrivalents; and (iii) the existence of complex multivalents in which up to 13 chromosomes in the triploid and 22 chromosomes in the tetraploids were involved However, only few heterologous chromosome associations were maintained at metaphase I The results obtained are discussed under the assumptions of the random end pairing model with some modifications
Keyword	chromosome [ Show all 11 ]

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.