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Chromosome Configuration Changes with Stages of Anther Development in a Triploid Sorghum Plant 1
Author(s) -
Lin P. S.,
Ross J. G.
Publication year - 1969
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1969.0011183x000900050051x
Subject(s) - biology , selfing , stamen , microspore , ploidy , meiosis , telophase , chromosome , anaphase , botany , metaphase , pollen , genetics , gene , population , demography , sociology
The homozygous nature of a triploid sorghum plant derived by selfing a haploid afforded the unique opportunity of studying chromosome behavior without the effect of heterozygosity. Frequency of univalents per cell at metaphase I of meiosis was found to increase while frequency of two trivalent types decreased as stage of anther development progressed. At anaphase I and telophase I, laggards per cell likewise increased at later stages of development of the anthers. These observations may be explained by the tendency of univalents to delay metaphase I so freqency of cells containing univalents would increase at later stages of anther development.