Metaphase I configurations of the reciprocal translocations in a cytogenetic tester set of Gossypium hirsutum L

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Twenty reciprocal translocations of the cytogenetic tester set of G. hirsutum were cytologically characterized. Nineteen of the 20 heterozygous translocations had a modal chiasma frequency of four per quadrivalent, 14 of which formed predominantly ring multivalents without interstitial chiasmata and five usually formed ring multivalents with at least one interstitial chiasma at MI. The remaining translocation averaged 3.27 chiasmata per quadrivalent and oriented predominantly as an alternate chain. Ten of the 20 reciprocal translocations formed predominantly alternate orientations at MI. Eight of these 10 lines were reciprocal translocations between two large A subgenome chromosomes. This suggests that the large A subgenome chromosomes allow the quadrivalent to be more flexible, resulting in easy reorientation to the stable alternate configuration. The constraints imposed by the chiasmata within the chromosome arms also appear to influence the orientation of the centromeres in quadrivalents at MI. Lines, In which a high frequency of multivalents with interstitial chiasma were observed, had a significantly lower frequency of multivalents with either one or two centromeres not involved in spindle attachment or with 3:1 orientations.

Original languageEnglish (US)
Pages (from-to)371-377
Number of pages7
JournalJournal of Heredity
Volume75
Issue number5
StatePublished - Sep 1984

Fingerprint

Gossypium
Translocation
Metaphase
Chromosomes
Cytogenetics
Centromere
Configuration
Alternate
Chromosome
Ring
Line
Low Frequency
Spindle

ASJC Scopus subject areas

  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Genetics(clinical)
  • Biotechnology
  • Molecular Biology
  • Genetics

Cite this

Metaphase I configurations of the reciprocal translocations in a cytogenetic tester set of Gossypium hirsutum L. / Ray, Dennis T.

In: Journal of Heredity, Vol. 75, No. 5, 09.1984, p. 371-377.

Research output: Contribution to journalArticle

@article{b817054f8ec242858e24a747eb028c0e,
title = "Metaphase I configurations of the reciprocal translocations in a cytogenetic tester set of Gossypium hirsutum L",
abstract = "Twenty reciprocal translocations of the cytogenetic tester set of G. hirsutum were cytologically characterized. Nineteen of the 20 heterozygous translocations had a modal chiasma frequency of four per quadrivalent, 14 of which formed predominantly ring multivalents without interstitial chiasmata and five usually formed ring multivalents with at least one interstitial chiasma at MI. The remaining translocation averaged 3.27 chiasmata per quadrivalent and oriented predominantly as an alternate chain. Ten of the 20 reciprocal translocations formed predominantly alternate orientations at MI. Eight of these 10 lines were reciprocal translocations between two large A subgenome chromosomes. This suggests that the large A subgenome chromosomes allow the quadrivalent to be more flexible, resulting in easy reorientation to the stable alternate configuration. The constraints imposed by the chiasmata within the chromosome arms also appear to influence the orientation of the centromeres in quadrivalents at MI. Lines, In which a high frequency of multivalents with interstitial chiasma were observed, had a significantly lower frequency of multivalents with either one or two centromeres not involved in spindle attachment or with 3:1 orientations.",
author = "Ray, {Dennis T}",
year = "1984",
month = "9",
language = "English (US)",
volume = "75",
pages = "371--377",
journal = "Journal of Heredity",
issn = "0022-1503",
publisher = "Oxford University Press",
number = "5",

}

TY - JOUR

T1 - Metaphase I configurations of the reciprocal translocations in a cytogenetic tester set of Gossypium hirsutum L

AU - Ray, Dennis T

PY - 1984/9

Y1 - 1984/9

N2 - Twenty reciprocal translocations of the cytogenetic tester set of G. hirsutum were cytologically characterized. Nineteen of the 20 heterozygous translocations had a modal chiasma frequency of four per quadrivalent, 14 of which formed predominantly ring multivalents without interstitial chiasmata and five usually formed ring multivalents with at least one interstitial chiasma at MI. The remaining translocation averaged 3.27 chiasmata per quadrivalent and oriented predominantly as an alternate chain. Ten of the 20 reciprocal translocations formed predominantly alternate orientations at MI. Eight of these 10 lines were reciprocal translocations between two large A subgenome chromosomes. This suggests that the large A subgenome chromosomes allow the quadrivalent to be more flexible, resulting in easy reorientation to the stable alternate configuration. The constraints imposed by the chiasmata within the chromosome arms also appear to influence the orientation of the centromeres in quadrivalents at MI. Lines, In which a high frequency of multivalents with interstitial chiasma were observed, had a significantly lower frequency of multivalents with either one or two centromeres not involved in spindle attachment or with 3:1 orientations.

AB - Twenty reciprocal translocations of the cytogenetic tester set of G. hirsutum were cytologically characterized. Nineteen of the 20 heterozygous translocations had a modal chiasma frequency of four per quadrivalent, 14 of which formed predominantly ring multivalents without interstitial chiasmata and five usually formed ring multivalents with at least one interstitial chiasma at MI. The remaining translocation averaged 3.27 chiasmata per quadrivalent and oriented predominantly as an alternate chain. Ten of the 20 reciprocal translocations formed predominantly alternate orientations at MI. Eight of these 10 lines were reciprocal translocations between two large A subgenome chromosomes. This suggests that the large A subgenome chromosomes allow the quadrivalent to be more flexible, resulting in easy reorientation to the stable alternate configuration. The constraints imposed by the chiasmata within the chromosome arms also appear to influence the orientation of the centromeres in quadrivalents at MI. Lines, In which a high frequency of multivalents with interstitial chiasma were observed, had a significantly lower frequency of multivalents with either one or two centromeres not involved in spindle attachment or with 3:1 orientations.

UR - http://www.scopus.com/inward/record.url?scp=0348086286&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0348086286&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0348086286

VL - 75

SP - 371

EP - 377

JO - Journal of Heredity

JF - Journal of Heredity

SN - 0022-1503

IS - 5

ER -