Citation
Fazalullah M. Bughio, . and Wilkins Richard M., . (1999) Post-harvest pest management: resistant rice varieties in control of stored product insect pests. [Proceedings Paper]
Abstract
One of the promising new approaches to management of insect pests of stored produce especially cereal grains is the use of varietal resistance functioning in the seed. Such a method requires resistant varieties with mechanisms of high selectivity in the grain showing high degrees of antifeedant responses to the insect without any subsequent deleterious effect on the intended human or livestock consumer. Most defensive functions of seeds against pests have been bred out during the centuries of development of the crop to give the modern high yielding varieties. Thus amongst the varieties of rice available now the occurrence of resistance in the seed is a rare event and only a few varieties are known to demonstrate such character. To further identify rice varieties with any degree of resistance in the grain rice seed was collected from many sources and screened to assess resistance traits. A screen was chosen based on several species of grain and flour eating coleoptera from the genera Tribolium and Sitophilus. From 28 selected rice varieties collected from around the world the grain from only 2 showed resistance. Further studies were done on the resistant varieties to evaluate the nature of the resistance comparing this to a susceptible variety. For this the role of extent of milling of the rice was assessed: this involved the feeding on rough brown and milled polished rice seed using the same insect growth and development parameters. The results of this evaluation are discussed and their relevance to the location in the seed and possible nature of resistance mechanisms will be presented.
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Abstract
One of the promising new approaches to management of insect pests of stored produce especially cereal grains is the use of varietal resistance functioning in the seed. Such a method requires resistant varieties with mechanisms of high selectivity in the grain showing high degrees of antifeedant responses to the insect without any subsequent deleterious effect on the intended human or livestock consumer. Most defensive functions of seeds against pests have been bred out during the centuries of development of the crop to give the modern high yielding varieties. Thus amongst the varieties of rice available now the occurrence of resistance in the seed is a rare event and only a few varieties are known to demonstrate such character. To further identify rice varieties with any degree of resistance in the grain rice seed was collected from many sources and screened to assess resistance traits. A screen was chosen based on several species of grain and flour eating coleoptera from the genera Tribolium and Sitophilus. From 28 selected rice varieties collected from around the world the grain from only 2 showed resistance. Further studies were done on the resistant varieties to evaluate the nature of the resistance comparing this to a susceptible variety. For this the role of extent of milling of the rice was assessed: this involved the feeding on rough brown and milled polished rice seed using the same insect growth and development parameters. The results of this evaluation are discussed and their relevance to the location in the seed and possible nature of resistance mechanisms will be presented.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. Call number mal SB 950 I61 1999 |
| AGROVOC Term: | Pest management |
| AGROVOC Term: | Postharvest systems |
| AGROVOC Term: | Antifeedants |
| AGROVOC Term: | Insects |
| AGROVOC Term: | High yielding varieties |
| AGROVOC Term: | Insect pests |
| AGROVOC Term: | Rice |
| AGROVOC Term: | Milling |
| AGROVOC Term: | Seeds |
| AGROVOC Term: | Grain |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:14 |
| URI: | http://webagris.upm.edu.my/id/eprint/12271 |
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