Evaluating Sorghum Genotypes For Multiple Insect Resistance

Nwanze, K F and Reddy, Y V R and Taneja, S L and Sharma, H C and Agrawal, B L (1991) Evaluating Sorghum Genotypes For Multiple Insect Resistance. Insect Science and its Application, 12 (1-3). pp. 183-188. ISSN 0191-9040

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A technique was developed in Andhra Pradesh, India, in which sorghum entries were subjected to an array of pest combinations to identify and separate genotypes with resistance to one or more insects. Using this technique, 220 resistance sources and breeding lines were evaluated for multiple insect resistance. Less than 10% of Atherigona soccata resistance sources had acceptable resistance (<3 on a scale of 1-9) to A. soccata, but over 50% showed good resistance (scores of 1-3) to Chilo partellus. IS 18551 and IS 2195 were the best entries with resistance to both these species. However, the majority (80-90%) of A. soccata and C. partellus resistant sources were highly susceptible to Contarinia sorghicola with scores >8. Similarly, all C. sorghicola resistant sources were highly susceptible to A. soccata but less so to Chilo partellus. IS 22464 was the best Contarinia sorghicola-resistant line with a score of 3 for Chilo partellus resistance. Advanced breeding lines showed a wider range of resistance to these 3 species, with a higher frequency for resistance to C. partellus. PS 28060-3 and PM 14388-1 were the most promising breeding lines.

Item Type: Article
Subjects: Mandate crops > Sorghum
Depositing User: Library ICRISAT
Date Deposited: 04 Dec 2011 09:42
Last Modified: 04 Dec 2011 09:42
URI: http://oar.icrisat.org/id/eprint/4604
Official URL:
Acknowledgement: UNSPECIFIED
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