Accession Number : AD0863643

Title :   Peanut Rust: A Review of Literature,

Corporate Author : FORT DETRICK FREDERICK MD

Personal Author(s) : Bromfield, Kenneth R.

Report Date : DEC 1969

Pagination or Media Count : 26

Abstract : Puccinia arachidis Speg., the incitant of rust of the cultivated peanut, Arachis hypogaea L., is endemic to the Western Hemisphere. It is widespread in the Caribbean region and Central America and has been reported from various countries in South America and from the United States. Outside the Americas the rust reputedly has become established only on the island of Mauritius. On plants subjected to early and intensive rust attack, leaves fail to attain normal size and fall to the ground prematurely, growth of the shoot is slowed, the life cycle of the plant may be shortened by more than 15 to 20 days, and the seeds that are produced may be smaller and lower in oil content. The fungus produces uredospores within uredial pustules found primarily on the leaves of the host. Uredospores readily become airborne and serve to disseminate the fungus. Under appropriate conditions of temperature and moisture, uredospores germinate, penetrate, and infect the host within hours and a new crop of uredospores matures within 10 days. Teliospores have been reported from South America but not elsewhere. At present, nothing is known about the role of the teliospore in the life history of the rust. Peanut rust has been reported to attack only species within the genus Arachis. Although some cultivars within the species A. hypogaea posess some resistance to peanut rust, the majority are susceptible. Currently, no effort is being made anywhere to consciously select or breed peanut varieties resistant to rust. Various dusts and sprays have been used against peanut rust but their effectiveness cannot be assessed adequately from the literature. (Author)

Descriptors :   *PUCCINIA(RUSTS), *PLANTS(BOTANY), DISEASES, PATHOLOGY, FUNGI, LIFE CYCLES, EPIDEMIOLOGY, CONTROL, CENTRAL AMERICA, CARIBBEAN SEA, SOUTH AMERICA, UNITED STATES.

Subject Categories : Agronomy, Horticulture and Aquiculture
      Microbiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE