My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in CS

  1. Vol. 10 No. 6, p. 642-645
     
    Received: Mar 28, 1970
    Published: Nov, 1970


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci1970.0011183X001000060009x

Performance of Synthetics and Sib Lines in Fairway Crested Wheatgrass, Agropyron cristatum (L.) Gaertn.1

  1. R. P. Knowles2

Abstract

Abstract

Sixteen selected plants of crested wheatgrass (Agropyron cristatum (L.) Gaertn.) were used to form a 16-clone synthetic, and alternatively two 8-clone synthetics, eight fullsib lines and 16 half-sib lines. Synthetics and sib lines were advanced to the second and third generation under isolation. Full-sib lines showed yield declines of 9% in the second generation and 16% in the third generation; half-sib lines showed vigor losses of 7% for the second generation and 12% for the third generation. Small losses in yield were shown for 8- and 16-clone synthetics in the second and third generations. Single crosses of sib lines as well as topcrosses and synthetics of sib lines generally were not superior to second and third generations of synthetics. One single cross and several topcrosses of sib lines gave yields equivalent to the first generation of synthetics. Intercrossing second generations of 8-clone synthetics gave a restoration of yield to the Syn. 1 level.

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

Copyright © .