Gynogenic plant regeneration from unpollinated flower explants of Eragrostis tef (Zuccagni) Trotter.

Abstract:

:Tef [Eragrostis tef (Zucc.) Trotter] is the most important cereal in Ethiopia. In its wild relative E. mexicana, regeneration of six green plants resulted from culture of 121 non-pollinated immature pistils. In the allotetraploid crop species tef, however, only callus and root formation was obtained by this method. By contrast, immature spikelets and panicle segments of E. tef proved amenable to gynogenic plant regeneration. Upon step-wise optimization of the protocol, efficient plant formation was achieved in all three cultivars tested. In cv. DZ-01-196, culture of 1305 immature spikelets resulted in formation of 159 green plants. Flow cytometric analysis revealed (di)haploid, triploid, tetraploid and octoploid regenerants, from which the vast majority was tetraploid. Tef-breeding programs will likely benefit substantially from efficient generation of true-breeding plants.

journal_name

Plant Cell Rep

journal_title

Plant cell reports

authors

Gugsa L,Sarial AK,Lörz H,Kumlehn J

doi

10.1007/s00299-006-0200-z

subject

Has Abstract

pub_date

2006-12-01 00:00:00

pages

1287-93

issue

12

eissn

0721-7714

issn

1432-203X

journal_volume

25

pub_type

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