Two new male-sterile mutants of Zea mays (Poaceae) with abnormal tapetal cell morphology

Two new recessive male-sterile mutants of Zea mays (Poaceae), or maize, were studied to identify the timing of pollen abortion and to examine the involvement of anther wall cell layers. The results of test crosses indicated that these mutants were not allelic with any known male-stenle mutants of ma...

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Published in:American journal of botany 1995-08, Vol.82 (8), p.1017-1023
Main Authors: Loukides, C.A. (University of California, Berkeley, CA.), Broadwater, A.H, Bedinger, P.A
Format: Article
Language:English
Subjects:
Anthers
Botany
Cellular biology
Corn
ESTERILIDAD MASCULINA
ESTRUCTURA CELULAR
ETAPAS DE DESARROLLO DE LA PLANTA
Fertility
Flowers & plants
Genetic mutation
INFERTILITE MALE
Lipid bodies
Microspores
Microsporocytes
MUTANT
MUTANTES
Mutation
Plants
POLEN
POLLEN
Reproductive Biology
Siblings
STADE DE DEVELOPPEMENT VEGETAL
STRUCTURE CELLULAIRE
TRASTORNOS DEL CRECIMIENTO
TROUBLE DE LA CROISSANCE
VARIACION GENETICA
VARIATION GENETIQUE
ZEA MAYS
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container_issue 8
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container_title American journal of botany
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creator Loukides, C.A. (University of California, Berkeley, CA.)
Broadwater, A.H
Bedinger, P.A
description Two new recessive male-sterile mutants of Zea mays (Poaceae), or maize, were studied to identify the timing of pollen abortion and to examine the involvement of anther wall cell layers. The results of test crosses indicated that these mutants were not allelic with any known male-stenle mutants of maize. Light and transmission electron microscopy were used to compare pollen development in homozygous male-stenle mutants to that in fertile heterozygous siblings. In both mutants, microspores abort soon after release from the meiotic tetrad. However, the two mutations have strikingly different phenotypes. Large lipid bodies accumulate in the tapetal cells as the microspores vacuolate and die in the mutant ms25. Large vacuoles appear in both the tapetal cells and the young microspores as they begin to disintegrate in the mutant ms26. Because abnormal tapetal cell morphology is detected in both mutants, it is possible that both of these mutations affect the expression of genes in tapetal cells
doi_str_mv 10.2307/2446231
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Large vacuoles appear in both the tapetal cells and the young microspores as they begin to disintegrate in the mutant ms26. 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source JSTOR Archival Journals and Primary Sources Collection
subjects Anthers
Botany
Cellular biology
Corn
ESTERILIDAD MASCULINA
ESTRUCTURA CELULAR
ETAPAS DE DESARROLLO DE LA PLANTA
Fertility
Flowers & plants
Genetic mutation
INFERTILITE MALE
Lipid bodies
Microspores
Microsporocytes
MUTANT
MUTANTES
Mutation
Plants
POLEN
POLLEN
Reproductive Biology
Siblings
STADE DE DEVELOPPEMENT VEGETAL
STRUCTURE CELLULAIRE
TRASTORNOS DEL CRECIMIENTO
TROUBLE DE LA CROISSANCE
VARIACION GENETICA
VARIATION GENETIQUE
ZEA MAYS
title Two new male-sterile mutants of Zea mays (Poaceae) with abnormal tapetal cell morphology
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