The origin, identification and cytogenetic behavior of interchange monosomes and the types of disjunction in interchange heterozygotes of Gossypium hirsutum L.

Bibliographic Details
Main Author:	Seyam, Said Mostafa
Other Authors:	Bird, Luther S. (degree committee member.), Freund, R. J. (degree committee member.), Hart, Gary E. (degree committee member.), Leinweber, C. L. (degree committee member.), Niles, G. A. (degree committee member.), Smith, James D. (degree committee member.)
Format:	Thesis Book
Language:	English
Published:	[College Station, Tex.], 1969.
Subjects:	Major genetics. Academic theses.
Online Access:	Link to ProQuest copy Link to OAKTrust copy

Description
Abstract:	Interchange monosomes, which have segments of two non-homologous chromosomes and hence form a chain of three chromosomes at MI of meiosis, are fertile and readily transmissible in Gossypium hirsutum. Tests for chromosome identification made by crossing five interchange monosomes with one or more of ten known homozygous interchange testers (involving twelve chromosomes) indicated that the following chromosomes were involved: T3-9, T4-15, T5-x and T6-x. Of the six chromosomes identified, four have not been recovered as simple monosomes. This suggests that recovery in interchange monosomes is at random and increases the possibility of obtaining all chromosomes of the complement as interchange monosomes. These can be used genetically and in plant breeding in place of simple monosomes not yet available. ...
Physical Description:	79 leaves illustrations