The anther tapetum in cytoplasmic-genetic male sterile sorghum

Brooks, M.H. and Brooks, J.S. and Chien, L. (1966) The anther tapetum in cytoplasmic-genetic male sterile sorghum. American Journal of Botany, 53 (9). pp. 902-908.

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Abstract

Measurements of anthers of five fertile lines of Sorghum vulgare Pers. indicate that the tapetum decreases in radial extent following the two-celled dyad stage of meiosis. At a mature pollen stage 78% of the anthers of fertile lines and 88% of those of a fertility restorer line have a narrow tapetum measuring between 4 and 16 μ radially, with the remainder having a degenerate tapetum less than 4 μ wide. In isogenic sterile lines, approximately 68% of the anthers have a narrow tapetum less than 16 μ wide at a "prepollen" stage, which represents the terminal stage in the sterile lines, whereas the remaining 32% have a well-developed or enlarged tapetum measuring over 28 μ in radial width. Tapeta in the sterile lines have a variation in width and in morphology not encountered in fertile lines and presumably display the variable manifestations of nuclear-cytoplasmic interaction characteristic of cytoplasmic-genetic male sterility.

Item Type:	Article
Author Affiliation:	Department of Botany and Plant Pathology, Department of Agronomy and Oklahoma Agricultural Experiment Station, Oklahoma State University, Stillwater, USA
Subjects:	Crop Improvement > Genetics/Genomics Crop Improvement > Plant Breeding
Divisions:	Sorghum
Depositing User:	Sandhya Gir
Date Deposited:	02 Nov 2010 18:36
Last Modified:	02 Nov 2010 18:39
Official URL:	http://dx.doi.org/10.2307/2439813
URI:	http://eprints.icrisat.ac.in/id/eprint/439

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