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Patterns Of Striga Resistance In Sorghum And Millets With Special Emphasis On Africa

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Relation http://oar.icrisat.org/4142/
 
Title Patterns Of Striga Resistance In Sorghum And Millets With Special Emphasis On Africa
 
Creator Ramaiah, K V
 
Subject Sorghum
 
Description Although host plant rcsistance in sorghum was denlonstrated as carly as 1920
both in Africa and India, its exploitation it1 breeding broad-spectrum stablc
resistant cultivars started only recently. In pearl millet, however, the cxistcncc
of host plant resistance is not yet clearly demonstrated. Striga-resistant
sorghum varieties are in general agronomically poor. Multi-locational evaluation
in Africa revealed that Framida ahd N 1 3 are the most stable rcsistant varieties.
These two varieties were resistant to both S. asiatica and S-. herm-onthica. Some of the varieties like Najjadh, 12610C and IS 9830 revealed a narrow spectrum of
rcsistance when tcsted across different seed samples of S. hcrmonthica. Ccnetic
analysis of field rcsistancc in sorghum revealed that it is controlled
predominantly by additive genc action and thus straight selection is effective. A
pedigree approach to transfer resistance into elite agronomic backgrounds was
successful. Several sclcctions with promising levels 01 resist~nce, stablc grain
yiclds and good grain quality wcre identified and arc now in 'on farm' tests. In
millet, a few less susceptible lincs have been identified. Intercrossing them and
following the pedigree system of selection resulted in increased levels of
rcsistancc and grain yields, The need for integrated Striga rnanagemcnt,
~ncluding resistant cultivars and complementary agronomic control practices, is
cmphasised.
 
Date 1983
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/4142/1/CP_186.pdf
Ramaiah, K V (1983) Patterns Of Striga Resistance In Sorghum And Millets With Special Emphasis On Africa. In: Workshop on the Biology and Control of Striga, 14-17 Nov. 1983, Dakar, Senegal.