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Physical basis for the maternal inheritance of triazine resistance in Amaranthus hybridus
Author(s) -
VAUGHN K. C.
Publication year - 1985
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1985.tb00612.x
Subject(s) - plastid , non mendelian inheritance , vacuole , biology , organelle , endoplasmic reticulum , extranuclear inheritance , amaranthus hybridus , golgi apparatus , microbiology and biotechnology , mitosis , ultrastructure , chloroplast , cytoplasm , genetics , botany , gene , mitochondrial dna , weed
Summary In an effort to determine the physical basis of the maternal inheritance of triazine resistance in Amaranthus hybridus L. the fate of plastids and other organelles in developing pollen was investigated in triazine‐resistant and susceptible biotypes. In both types, immediately after microspore mitosis, the newly formed generative cells contained an array of organelles (golgi bodies, endoplasmic reticulum, plastids and mitochondria) similar to that in the larger vegetative cells. No selective exclusion of organelles from the generative cell was noted although only small plastids were present. The immature generative cells contained small vacuoles, within which degenerate organelles were frequently observed, and no ultrastucturally recognizable plastids were found in mature cells. Maternal transmission of the triazine resistance factor thus appears to be due to a selective destruction of paternal plastids.