Resistance in groundnut genotypes to Kalahasti malady caused by the stunt nematode, Tylenchorhynchus brevilineatus

Mehan, V K and Reddy , D D R and McDonald, D (1993) Resistance in groundnut genotypes to Kalahasti malady caused by the stunt nematode, Tylenchorhynchus brevilineatus. International Journal of Pest Management, 39 (2). pp. 201-203. ISSN 0967-0874

PDF - Published Version Restricted to ICRISAT users only Download (741kB) | Request a copy

Abstract

A severe nematode disease of groundnut, popularly called 'Kalahasti malady', caused by Tylenchorhynchus brevilineatus, has been prevalent since 1976 in certain parts of Andhra Pradesh, India. A total of 1599 groundnut germplasm accessions and breeding lines were screened for resistance to the nematode disease in replicated trials on a farmer's field in a disease hot spot location during 1985-86. Twenty-three genotypes were identified as resistant and they had disease scores of 2.0 or less on a 1-5 disease scale. Of these, 14 genotypes were confirmed to be resistant in advanced screening trials in the 1986 rainy and the 1985/6 and 1986/7 post-rainy season. Resistance to the nematode was stable in all three trial sites in the 1986/7 post-rainy season. Most of the resistant genotypes have undesirable pod/seed characteristics. One of the resistant genotypes is a high-yielding breeding line (TCG 1518) and this is being released for use in disease-affected areas of Andhra Pradesh

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Arachis hypogaea, resistance, Tylenchorhynchus brevilineatus, India
Subjects:	Mandate crops > Groundnut Others > Genetics and Genomics
Depositing User:	Mr B K Murthy
Date Deposited:	29 Aug 2013 05:14
Last Modified:	29 Aug 2013 05:14
URI:	http://oar.icrisat.org/id/eprint/6829
Official URL:	http://dx.doi.org/10.1080/09670879309371791
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	SNNigam Collection
Links:	Google Scholar

View Statistics

Actions (login required)

View Item