Spontaneous chromosome fragmentation in maize microsporocytes

In order to determine the influence of soil acidity on the meiotic behavior of maize microsporocytes, materials not selected for low pH soils consisting of inbred lines, single and double-cross hybrids were cultivated on acid and corrected soils in the Brazilian Central Plateau and in the Southern R...

Full description

Saved in:
Bibliographic Details
Published inCYTOLOGIA Vol. 60; no. 3; pp. 297 - 301
Main Authors Caetano-Pereira, C.M, Taschetto, O.M, Defani-Scoarize, M.A, Pagliarini, M.S
Format Journal Article
LanguageEnglish
Published Tokyo Japan Mendel Society, International Society of Cytology 1995
Japan Science and Technology Agency
Subjects
chromosome aberrations
Chromosome fragmentation
genotype
meiosis
soil acidity
soil pH
Zea mays
Online AccessGet full text

Cover

More Information
Summary:In order to determine the influence of soil acidity on the meiotic behavior of maize microsporocytes, materials not selected for low pH soils consisting of inbred lines, single and double-cross hybrids were cultivated on acid and corrected soils in the Brazilian Central Plateau and in the Southern Region of the country. Cytologic analysis revealed the occurrence of countless chromosome abnormalities, among them figures closely resembling a phenomenon previously described in the literature that affects both mitosis and meiosis. This abnormality is characterized by intense chromosome fragmentation. The phenomenon was spontaneous its phenotypic expression was very intense and its incidence was higher in inbred lines cultivated on acid soil. Possible effects of genotypic and environmental factors are suggested as the origin of this phenomenon.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0011-4545
1348-7019
DOI:10.1508/cytologia.60.297