Maruca testulalis Damage in Determinate and Indeterminate Lines of Pigeonpea in Sri Lanka

Saxena, K B and Lateef, S S and Fonseka, H H D and Ariyaratne, H P and Dharamsena, C M D (1996) Maruca testulalis Damage in Determinate and Indeterminate Lines of Pigeonpea in Sri Lanka. International Chickpea Newsletter, 3. pp. 91-93. ISSN 0257-2508

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Abstract

To compare damage caused by M. testulalis [M. vitrata] in determinate (DT) and indeterminate (IDT) lines of pigeon pea [Cajanus cajan], 271 short-duration genotypes were evaluated for percentage pod damage, days to 50% flowering and recovery from pod damage at the Field Crops Research and Development Institute, Maha Illuppallama, Sri Lanka during 1990-91. Mean pod damage of DT and IDT lines was 65-75 and 40-50%, respectively and none of the lines had less than 10% damage. Number of days to 50% flowering in DT lines was 54-84 and was not related to pod damage. In IDT lines, days to 50% flowering was 60-87 days and had a significant negative correlation with M. testulalis damage (r = -0.43), showing that early flowering lines suffered more damage than late flowering lines. In general, pod damage by M. testulalis caused serious flower drop in both DT and IDT types. Recovery from pod damage was poor in DT lines but excellent recovery was recorded in IDT lines ICPL88034, ICPL87113 and MG679. DT lines appear to be more prone to M. testulalis damage because they have clustered inflorescences compared to IDT types which have long fruiting branches and loose inflorescences.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Pigeonpea
Depositing User:	Library ICRISAT
Date Deposited:	22 Oct 2011 11:29
Last Modified:	22 Oct 2011 11:29
URI:	http://oar.icrisat.org/id/eprint/2932
Official URL:
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
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