บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Evaluation and use of wild Phaseolus species in breeding.

Ishimoto, M.;

The Seventh Ministry of Agriculture, Forestry and Fisheries (MAFF), Japan, International Workshop on Genetic Resources, Ibaraki, Japan, 13-15 October, 1999: Part 1, wild legumes. Year: 2000 Pages: 183-190 Ref: 14 ref.

2000

บทคัดย่อ

Evaluation and use of wild Phaseolus species in breeding.

Common bean (Phaseolus vulgaris) is a staple food in many countries but, like other crops, insect pests cause considerable losses. Extensive postharvest damage is caused by the larvae of two bruchid pests, the bean weevil (Acanthoscelides obtectus) and the Mexican bean weevil (Zabrotes subfasciatus). High levels of resistance against the bruchids have been found in wild common beans collected in Mexico. These wild accessions contain a novel protein, arcelin, which is divided into at least seven electrophoretic variants. In addition, a second type of alpha -amylase inhibitor ( alpha AI-2) active against alpha -amylase of the Mexican bean weevil has been observed in some accessions containing arcelin. Arcelin and alpha -amylase inhibitor are genetically and structurally closely related to lectin (phytohaemagglutinin). The common bean presumably develops different defense proteins by duplication and divergence of an ancestral gene.