Pollen Mother-Cells

Cytomixis in Pollen Mother Cells of Citrus Genotypes

A microsporogenesis analysis performed in several Citrus populations revealed the presence of cytomixis (i.e., chromatin migration between meiocytes) in pollen mother cells of diploid and tetraploid genotypes. Single and double chromatin bridges between adjacent meiocytes were mainly observed at prophase I, but also in the subsequent phases of first division and in the second meiotic division. ...

An Apparent Helical Arrangement of Ribosomes in Developing Pollen Mother Cells of Ipomoea Purpurea (l.) Roth

Behnke (1963) has recently described a helical arrangement of ribosomes in differentiating cells of the small intestine of the rat fetus, and Waddington and Perry (1963) have found the same structures in the muscle cells of Rana pipiens embryo. In the course of an investigation into the development of pollen in Ipomoea purpurea (L.) Roth, a similar arrangement of ribosomes has been seen in the ...

Running head: Gene Expression Profiling of Pollen Mother Cells in Rice

The organization and polarity of pollen mother cells of Triticum aestivum.

Colchicine has been applied to young developing anthers of Triticum aestivtim at varying stages of maturity from the last premeiotic mitoses of the archesporial and tapetal cells to the second meiotic divisions of the pollen mother cells. The developmental stage of the archesporium at which colchicine took effect was determined by cytological examination of the ploidy levels of the nuclei of th...

Meiosis in the Pollen Mother Cells of OENOTHERA BIENNIS and OENOTHERA BIENNIS SULFUREA.

TABLE OF CONTENTS PAGE 1NTRODUCTlON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Description.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Early prophase stages. . . . . . . . . . . . . . . . . . . . . . . . . . ....