Cytological Studies in Digitaria pentzii Stent

How to Cite

Shambulingappa, K. G. (1970). Cytological Studies in Digitaria pentzii Stent. The Journal of Agriculture of the University of Puerto Rico, 54(2), 401–408.


Fourteen accessions of Digitaria pentzii have been studied cytologically: Ten of them are tetraploids, two are triploids, one is a diploid and one is a aneuploid. Observations made on chromosome configurations at diakinensis and metaphase 1 in polyploids, together with preliminary studies on gross morphology of pachytene chromosomes, indicate that the tetraploids are allopolyploids and the triploids are autopolyploids. Elimination of chromatin material through B-chromosome process following translocation is cited as one of the mechanisms for the occurrence of aneuploids.


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