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Field screening finger millet germplasm for drought tolerance

OAR@ICRISAT

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Relation http://oar.icrisat.org/10729/
 
Title Field screening finger millet germplasm for drought tolerance
 
Creator Ojulong, H F
Sheunda, P
Mgonja, F
Kibuka, J
Otwani, D
Manyasa, E O
 
Subject Abiotic Stress
Crop Improvement
Finger Millet
Germplasm Collection
 
Description Drought stress is the most important abiotic constraint limiting
finger millet production. Limited research on tolerance to drought
in finger millet has been done in Africa. As a result, the only varieties
adapted to high-rainfall regions have been developed
and promoted. Twenty-four potential drought-tolerant varieties
selected from regional trials, and a short-duration commercial
check (U15), were screened for drought in three locations in Kenya
(KALRO-Kiboko, KALRO-Kampiya Mawe (KYM)) and Tanzania
(DRD-Miwaleni). Genotype was significant for all the traits,
location for all except yield, and GxL interaction for all except
plant height. Sixteen of the varieties outperformed the commercial
check (1.10 tha-1), with the best yielders being IE2187 (2.02
tha-1), IEFV0009 (1.50 tha-1), IE501 (1.1.48tha-1), IE593 (1.45
tha-1) and IE2030 (1.43 tha-1). All varieties except one had shorter
DAP than the commercial variety. GGE biplot for yield showed
Kiboko and Miwaleni locations to be effective in discriminating
genotypes. Genotypes IE501, IE593, were specifically adapted to
the Kiboko environment while IE546, KNE 741 and IE5791 were
more adapted to the Miwaleni environment. Genotypes IE3104,
IE5736, IE5733, IE6475 and IEFV0009 were stable across locations.
Principal component analysis revealed the first four PC accounted
for 85.72% of the variation with plant height, agronomic
score, biomass, number of lodged plants, and number of productive
tillers contributing the most. Five of the varieties -- IE2187,
IEFV0009, IE501, IE593 and IE2030 -- have been advanced to
PVS in Kenya and Tanzania, while KNE 741 is at NPT in Kenya.
 
Date 2017-02
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/10729/1/304.pdf
Ojulong, H F and Sheunda, P and Mgonja, F and Kibuka, J and Otwani, D and Manyasa, E O (2017) Field screening finger millet germplasm for drought tolerance. In: InterDrought-V, February 21-25, 2017, Hyderabad, India.