About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 18 No. 5, p. 789-791
     
    Received: Jan 7, 1978
    Published: Sept, 1978


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci1978.0011183X001800050025x

Recurrent Selection for Changing Gene Frequency of Germination Rate in Blue Panicgrass1

  1. L. Neal Wright2

Abstract

Abstract

Genotypes of blue panicgrass, Panicum antidotale Retz, with extreme rates of germination were isolated through succeeding cycles by recurrent phenotypic selection with restricted intercrossing by random mating. The number of days required to germinate 50% of the seed was used to estimate rate of germination. Daily germination data were used to determine germination rate estimates by the Regression Index (RI) method. Genetic variability was evident in each cycle of selection. The frequency of desired genotypes for rate of germination increased through the sixth cycle. The estimated number of days required to germinate 50% of seed of the sample in the sixth cycle was 5.5 days (range 0.4 to 8.3) for the fast rate of germ. ination and 13.8 days (range 8.0 to 32.3) for the slow rate of germination. Results indicate that phenotypic recurrent selection can effectively shift the frequency of genes affecting germination rate in blue panicgrass.

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

Copyright © .