About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 20 No. 1, p. 69-75
     
    Received: July 30, 1979


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci1980.0011183X002000010016x

Effect of Three Ploidy Levels on Meiosis and Mode of Reproduction in Paspalum hexastachyum1

  1. Camilo L. Quarin and
  2. Wayne W. Hanna2

Abstract

Abstract

Chromosome behavior, mode of reproduction, and fertility characteristics were studied in diploid (2n = 12) and colchicine-induced tetraploid and hexaploid Paspalum hexastachyum Parodi. Diploids could be distinguished from teraploid and hexaploid plants by floret size. Guard cell length and pollen diameter also were useful in identifying ploidy levels. Chromosomes paired mainly as bivalents with an occasional quadrivalent in the diploids; bivalents and quadrivalents in the tetraploids; and bivalents, quadrivalents and hexavalents in the hexaploid. The diploids were sexual but induced tetraploids and hexaploids reproduced by facultative apomixis. Diploid plants were self-incompatible but cross compatible. The plants were self-compatible at the tetraploid-chromosome level.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .