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Cytopalynology of Amaranthus L. and Chenopodium L. – The two pantoporate taxa
Author(s) -
Chaturvedi M.,
Datta K.,
Pal M.
Publication year - 1997
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19971080506
Subject(s) - pollen , biology , chenopodium , botany , ploidy , interspecific competition , taxon , range (aeronautics) , hybrid , weed , materials science , composite material , biochemistry , gene
Cytopalynological studies in the species, cytotypes, interspecific hybrids and amphiploids of Amaranthus L. and Chenopodium L. have been carried out using LM and SEM. It has been observed that in the cytotypes, the pollen grains at the lower ploidy level have a narrow size range. The size range widens with the increase of the ploidy level. The exine surface ornamentation is more prominent in the polyploids than in the diploids, and the 6x level exine pattern of the parent is expressed in the pollen of 6x level amphiploid. The triploid hybrid shows a high degree of variability with regard to pollen size and exine surface ornamentation. Such pollen characters may be used as markers in the biosystematic delimitation of cytotaxa occurring in nature.