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Genetic Variation for Striga hermonthica Resistance and Yield Among Sorghum Accessions in Nigeria

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Relation http://oar.icrisat.org/11587/
https://doi.org/10.5539/jas.v12n7p192
doi:10.5539/jas.v12n7p192
 
Title Genetic Variation for Striga hermonthica Resistance and Yield Among Sorghum Accessions in Nigeria
 
Creator Afolayan, G
Aladele, S E
Deshpande, S P
Kolawole, A P
Nwosu, D J
Michael, C
Blay, E T
Danquah, E Y
 
Subject Sorghum
Genetics and Genomics
Plant Disease
 
Description Striga hermonthica (Delile) Benth., commonly referred to as witch weed, is a major constraint to sorghum
(Sorghum bicolor (L.) Moench) production in the Northern region of Nigeria because of high yield losses due to
infestation. To identify parental lines useful in breeding for S. hermonthica resistant sorghum genotypes adapted
to Nigeria, twenty-five sorghum accessions were evaluated in Nigeria across three test environments. Both
phenotypic and genetic components influenced the variation observed in the sorghum accessions. The estimates
for the genetic coefficient of variation, heritability and genetic advance for the area under Striga number
progress curve (ASUNPC), Striga emergence counts, yield and other agronomic traits, obtained in this study
revealed that genetic gain for resistance to S. hermonthica could be realized through selection. Based on the
performance of the 25 sorghum accessions SRN39, Danyana, Sepon82, and SAMSORG40 were the top four
accessions found to be most resistant to S. hermonthica. Assessment of resistance was based on the low Striga
emergence counts and the ASUNPC values. These accessions can be used as donor sources of S. hermonthica
resistant genes for introgression into cultivars adapted to Nigeria, followed by recombination breeding for
pyramiding the different resistance mechanisms.
 
Publisher Canadian Center of Science and Education (CCSE)
 
Date 2020-06
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11587/1/Genetic-Variation-for-Striga-hermonthica.pdf
Afolayan, G and Aladele, S E and Deshpande, S P and Kolawole, A P and Nwosu, D J and Michael, C and Blay, E T and Danquah, E Y (2020) Genetic Variation for Striga hermonthica Resistance and Yield Among Sorghum Accessions in Nigeria. Journal of Agricultural Science, 12 (7). pp. 192-202. ISSN 1916-9752