| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||
a Ethiopian Agricultural Research Organization (EARO), Addis Ababa, Ethiopia
b International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria. Registration by CSSA
* Corresponding author (a.sarker{at}cgiar.org).
‘Teshale’ lentil (Lens culinaris Medikus) (Reg. No. CV-30, PI 644221) was developed at the International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria, and released in 2004 by the Debre Zeit Agricultural Research Center (DZARC) of the Ethiopian Agricultural Research Organization (EARO), Ethiopia, for commercial cultivation. It is a high-yielding red cotyledon lentil cultivar with erect growth habit and a high level of resistance to lentil rust [caused by Uromyces viciae-fabae (Pers.) Schroet.]. The cultivar has shown adaptation in a wide range of environments, particularly in Ethiopian highlands of typical vertisol soil with ample drainage, which stretches from 1800 to 2400 m above sea level in areas with 400 to 800 mm rainfall.
Teshale was introduced to Ethiopia in 1996 through ICARDA's Lentil International Yield Trial (small-seed). It is a breeding line (FLIP 96-46L) developed at ICARDA following a bulk-pedigree method. The line was later entered into the Lentil Germplasm Catalog as accession ILL 7978. Teshale was initially identified as a promising line at the DZARC experimental farm in 1997 for its overall good adaptation and desirable agronomic performance. The line was subsequently tested in replicated preliminary and advanced yield trials and selected as one of the best-performing lines at DZARC. Later, it was tested in seven contrasting sites (Chefe Donsa, Akaki, Debre Zeit, Sinana, Hossana, Enewari, and Adet) in Ethiopia from 1999–2000 to 2001–2002. On average, Teshale produced 2111 kg ha–1 seed yield compared with 1808 kg ha–1 for ‘Adaa’, the improved check, and 1654 kg ha–1 for the farmers' local variety. Based on yield performance over 27 environments, Teshale outyielded Adaa by 17% and the local variety by 28%. Teshale showed a yield potential of 4714 kg ha–1 at the Akaki research station in the 1999–2000 season.
A range of soil-borne and foliar diseases, including rust and the wilt root rot complex, limit lentil production in Ethiopia. During the course of its yield evaluation, Teshale showed high levels of resistance against rust, with a rating of 1 on a 1–9 scale (where 1 equals resistance and 9 equals susceptible). The local checks were completely diseased and scored 9. Tashale showed a resistant reaction against wilt root rot diseases caused by a range of soil-borne pathogens. In a natural epidemic condition in 2003, Teshale appeared moderately resistant to Ascochyta blight disease (caused by Ascochyta fabae Speg. f. sp. lentis Gossen et al.).
Teshale has an erect growth habit with a strong stem, providing lodging resistance, and is suitable for mechanical harvest. Plants are medium-statured (29 cm) with more basal primary branches compared with local cultivars. Leaves are dark green with narrow leaflets, with a long tendril. Intermingling of tendrils keeps the canopy upright at maturity. Depending on growing season and location, plants of Teshale produce 50% flowers in a range of 48 to 68 d and mature in 97 to 139 d. Flowers are bluish white. The plant bears an average of 70 pods per plant and 1.95 seeds per pod. Its seed coat is light brown to gray, and cotyledons are bright red, which is preferred by consumers. One hundred seed weight of Teshale varies from 3.1 to 4.3 g, compared with 2.2 g for the local cultivars. Smooth seed surface of Teshale provides excellent splitting or dehulling quality with approximately 90% recovery. Its dehulled seed has a protein content of 25.3%, and straw has a protein content of 6.6%. Teshale takes 34 min to cook.
Seed of Teshale is maintained by DZARC, Debre Zeit, Ethiopia, and at the Germplasm Program, ICARDA, Aleppo, Syria, and is available in small quantities on written request from the corresponding author. After five years from the date of registration, seeds of Teshale will be available from the National Germplasm Bank, USA. Plant variety protection will not be sought for Teshale.
Footnotes
All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher.
Received for publication June 15, 2006.
| ||||||||||||||||||||||||||||||||||||||||||||||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
