Johnson, J.W. and Schaefer, C.A. and Schaefer, C.A. (1976) Greenhouse and field techniques for evaluating resistance of sorghum cultivars to the greenbug. Southwestern Entomologist, 1 (3). pp. 150-154.
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Abstract
Varieties of Sorghum bicolor were grown in the greenhouse in Texas and infested with Schizaphis graminum (Rond.) 7 days after plant emergence; seedlings that retained 50% living leaf tissue when plants of known susceptible varieties were dead were considered to be resistant. In the field, resistance of mature sorghum was determined by attaching small plastic cages, each containing 5 aphids, to the leaves of plants in the booting stage or older, and those retaining at least 50% living leaf area in the cages (when 90% of the caged leaf area of susceptible plants had been killed) were considered to be resistant. These methods of evaluating resistance were successfully used in breeding for aphid resistance from several agronomically improved sorghum stocks.ADDITIONAL ABSTRACT:Two methods are described which have been used for evaluating resistance to Schizaphis graminum in a breeding programme with several agronomically improved lines
| Item Type: | Article |
|---|---|
| Author Affiliation: | Texas Agricultural Experiment Station, Texas A&M University System, Lubbock, TX 79401, USA |
| Subjects: | Plant Protection Crop Improvement > Genetics/Genomics Crop Improvement > Plant Breeding |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 14 Sep 2012 08:32 |
| Last Modified: | 14 Sep 2012 08:32 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/7902 |
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