About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 21 No. 3, p. 415-418
     
    Received: Dec 27, 1979


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2135/cropsci1981.0011183X002100030015x

Use of Partially Male-Sterile Perennial Ryegrass for Hybrid Cultivar Production1

  1. B. S. Ahloowalia2

Abstract

Abstract

The possibility of breeding ryegrass hybrid varieties based on partial male-sterility was investigated. Frequency of hybridization between perennial ryegrass, Lolium perenne L., and annual ryegrass, L. multiflorum Lam., was determined by using two partially male-sterile perennial ryegrass genotypes. Clones of a desynaptic diploid (2n = 14) and a trisomic (2n = 15) perennial ryegrass plant were inter-pollinated with annual ryegrass plants having the dominant markers fluorescent-roots and awned-florets. The progeny of perennial × annual ryegrass showed fluorescent-roots and all except two plants had awned-florets, suggesting 100% hybridization on inter-pollination. In the reciprocal crossings, annual × perennial ryegrass, hybridization frequency approached 100% with the trisomic pollinator, but was only 29% with the perennial desynaptic pollinator. Although most F1 plants were fertile and had good seed set, mortality in F2 and back-crosses was high. It was concluded that partially male-sterile genotypes can be used for the production of hybrid ryegrass cultivars.

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

Copyright © .