Origins of resistances to rust and late leaf spot in peanut (Arachis hypogaea, Fabaceae)

    Subrahmanyam, P and Ramanatha Rao, V and McDonald, D and Moss, J P and Gibbons, R W (1989) Origins of resistances to rust and late leaf spot in peanut (Arachis hypogaea, Fabaceae). Economic Botany, 43 (4). pp. 444-455. ISSN 0013-0001

    [img] PDF - Published Version
    Restricted to ICRISAT users only
    Download (2MB) | Request a copy

    Abstract

    The cultivated peanut (Arachis hypogaea, Fabaceae) is believed to have originated along the eastern slopes of the Andes in Bolivia and northern Argentina. The crop is now grown throughout tropical and warm temperate regions. Among diseases attacking peanuts, rust caused byPuccinia arachidis and late leaf spot caused byPhaeoisariopsis personata are the most important and destructive on a worldwide scale. Both pathogens, restricted in host range to Arachis, probably originated and coevolved in South America along with their hosts. In recent years there has been much emphasis on screening of peanut germplasm for resistance to these diseases. At the International Crops Research Institute for the Semi-Arid Tropics (ICRISA T), India, some 10,000 peanut germplasm accessions were screened for resistance to rust and late leaf spot during 1977–1985 and sources of resistance indentified for either or both pathogens. Of the resistant genotypes, about 87% belonged to A. hypogaea var.fastigiata and 13% to var.hypogaea; 84% originated in South America or had South American connections. A high percentage (75%) had their origin in Peru (believed to be a secondary gene center for var.hirsuta and var.fastigiata,), suggesting that resistance to rust and late leaf spot diseases might have evolved in that country.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: JA629
    Subjects: Mandate crops > Groundnut
    Depositing User: Mr Charan Sai Ch
    Date Deposited: 06 Nov 2011 03:06
    Last Modified: 28 Mar 2014 05:02
    URI: http://oar.icrisat.org/id/eprint/3696
    Official URL: http://dx.doi.org/10.1007/BF02935917
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
    Links:
    View Statistics

    Actions (login required)

    View Item View Item
    OAR@ICRISAT is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.