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This article in AJ

  1. Vol. 50 No. 8, p. 441-445

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Chromosome Numbers and Microsporogenesis in Dallisgrass Paspalum Dilatatum Poir1

  1. E. C. Bashaw and
  2. Ian Forbes Jr.2



The common type of Paspalum dilatatum and a closely related yellow-anthered type had 50 chromosomes. Meiosis I was characterized by 20 bivalents and 10 univalents which lagged at anaphase I. A semi-prostrate, purple-anthered type had 40 chromosomes and extreme meiotic irregularity, frequently having 20 laggards at anaphase I. A yellow-anthered, erect type with pubescent spikelets had 40 chromosomes and regular meiotic behavior.

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