Drought effects on yield and its components in Indian mustard (Brassica juncea L.)

A - Papers appearing in refereed journals

Chauhan, J. S., Tyagi, M. K., Kumar, A., Nashaat, N. I., Singh, M., Singh, N. B., Jakhar, M. L. and Welham, S. J. 2007. Drought effects on yield and its components in Indian mustard (Brassica juncea L.). Plant Breeding. 126 (4), pp. 399-402.

AuthorsChauhan, J. S., Tyagi, M. K., Kumar, A., Nashaat, N. I., Singh, M., Singh, N. B., Jakhar, M. L. and Welham, S. J.
Abstract

Effects of drought on yield and yield components were investigated during the spring season 2000-2001 by growing 14 Indian mustard genotypes under irrigated and rain-fed conditions at Bharatpur and Jobner. A disease and pest management schedule was followed when required. The drought susceptibility index (DSI) for seed yield and component characteristics was calculated to characterize the relative tolerance of genotypes. Plant height, primary branches, secondary branches per plant, 1000-seed weight and seed yield were reduced under rain-fed conditions. The top five genotypes at 13haratpur that showed tolerance to moisture stress for seed yield, as indicated by their lowest DSI, were, in descending order PSR-20, PRO-97024, JMMWR-941, IS-1787 and PCR-7, whereas at Jobner these were JMMWR-941, RC-1446, PSR-20, RH-819 and 'Varuna'. Of these, PSR-20 and JMMWR-941 were among the top six at both locations. These genotypes also showed relatively low DSI for one or more characteristics, such as primary branches per plant, secondary branches per plant, harvest index and seed : husk ratio. Genotypes with the lowest DSI, particularly for seed yield at both locations, would serve as useful donors in the breeding programme for improving the drought tolerance of existing Indian mustard cultivars.

KeywordsAgronomy; Biotechnology & Applied Microbiology; Plant Sciences
Year of Publication2007
JournalPlant Breeding
Journal citation126 (4), pp. 399-402
Digital Object Identifier (DOI)doi:10.1111/j.1439-0523.2007.01394.x
Open accessPublished as non-open access
Funder project or codeCentre for Crop Genetic Improvement (CGI)
Publisher's version
PublisherWiley
ISSN0179-9541

Permalink - https://repository.rothamsted.ac.uk/item/89w8y/drought-effects-on-yield-and-its-components-in-indian-mustard-brassica-juncea-l

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