Pollen : structure, types, and effects / Benjamin J. Kaiser, editor.

Format:

Book

Contributor:

Kaiser, Benjamin J.

Series:

Environmental science, engineering and technology series.

Environmental science, engineering and technology

Language:

English

Subjects (All):

Pollen.

Palynology.

Physical Description:

1 online resource (384 p.)

Edition:

1st ed.

Place of Publication:

New York : Nova Science Publishers, c2010.

Language Note:

English

Summary:

Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells). Pollen grains have a hard coat that protects the sperm cells during the process of their movement between the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants. When pollen lands on a compatible pistil of flowering plants, it germinates and produces a pollen tube that transfers the sperm to the ovule of a receptive ovary. Among other topics, this book reviews research on pollen biology and the hybridisation process in walnuts, modern conception on the structure and development of the sunflower anther; the role of anion channels in pollen germination and tube growth.

Contents:

""POLLEN: STRUCTURE, TYPES AND EFFECTS ""; ""POLLEN: STRUCTURE, TYPES AND EFFECTS ""; ""Contents""; ""Preface""; ""2n Pollen Formation: 40 Cytological Mechanisms of Nuclear Meiotic Restitution""; ""Abstract""; ""Introduction""; ""1. Normal Cytoskeleton Dynamics during Pollen Mother Cells Meiotic Division""; ""1.1. Cytoskeleton Cycle during First Meiosis with Successive Cytokinesis in Monocotyledonous Species""; ""1.2. Cytoskeleton Cycle in Male Meiosis in Dicotyledonous Species with Simultaneous Cytokinesis""; ""1.3. Simultaneous and Successive Cytokinesis Compared""

""2. Prophase Abnormalities as the Reason for Meiotic Restitution""""2.1. Cytoskeleton Conservation in the Interphase Radial Configuration""; ""2.2. Fused Spindle. Approachment of Nuclei at Prophase II of Meiosis with Simultaineous Cytokinesis in Dicotyledonous Species""; ""2.3. Fused Spindle. Fusion of Cytoskeleton Perinuclear Rings at Prophase II""; ""2.4. Cortical Cytoskeleton Ring and Meiotic Restitution""; ""2.5. Autonomous Cytoskeleton Ring""; ""2.6. Chromosome Arrest in the Zygothene ��Bouquet� Configuration: Monopolar Chromosome Migration in a Bipolar Spindle""

""3. Early Prometaphase Abnormalities Leading to Nuclear Restitution""""3.1. Cytoskeleton Conservation in the Perinuclear Ring Configuration""; ""3.2 Aberration in Straightening of Microtubules of Perinuclear Ring: C-Spindle""; ""3.3 Arrest of Cytoskeleton Invading the Former Nuclear Area""; ""4. Mid Prometaphase Abnormalities and Meiotic Restitution""; ""4.1. Monopolar Spindle""; ""4.2. Autonomous Spindle""; ""4.3. Chromosomes Monopolar Migration in a Bipolar Spindle. “Comet� Phenotype""

""4.4. Fused Spindle. Approachment and Fusion of Cytoskeleton Chaotic Figures at Mid-Prometaphase II in PMCs with Simultaneous Cytokinesis in Dicots""""5. Abnormalities of Late Prometaphase as a Meiotic Restitution Mechanism""; ""5.1. Chaotic Spindle""; ""5.2. Spindle Disorientation at Metaphase II in the Meiosis with Simultaineous Cytokinesis in Dicots""; ""6. Anaphase Abnormalities that Lead to Meiotic Restitution""; ""6.1. Aberration of Anaphase Chromosome Movement""; ""6.2. Spindle Shortening During Anaphase""; ""7. Cytoskeleton Abnormalities at Telophase and Meiotic Restitution""

""7.1. Arrest of Basic Telophase Processes""""7.2. Complete Arrest of Cytokinetic Processes at Early Phragmoplast Stage""; ""7.3. Arrest at Early Phragmoplast Stage with Element of Centrifugal Movement: Gamma-Phenotype""; ""7.4. Consolidation of Laggard Chromosomes into the Restitution Nucleus""; ""7.5. Arrest of Phragmoplast Development at the Stage of Hollow Cylinder""; ""7.6. Excessive Curvature of Phragmoplast Fibers during Centrifugal Movement""; ""7.7. Aberration of Phragmoplast Centrifugal Movement""

""7.8. Arrest of Radial Cytoskeleton System Formation at TII (in ��Parallel Spindles�� Phenotype) in the Simultaineous Cytokinesis in the Dicot PMCs""

Notes:

Description based upon print version of record.

Includes bibliographical references and index.

Description based on print version record.

ISBN:

1-61728-048-8

OCLC:

923655042