Article Abstract

Volume 27, No. (3), 2017 (June)
TRAITS RELATED TO DROUGHT TOLERANCE IN TOMATO ACCESSIONS OF DIFFERENT GROWTH TYPE AND FRUIT SIZE
M. Brdar-Jokanović1*, Z. Girek2, S. Pavlović2, M. Ugrinović2 and J. Zdravković2

M. Brdar-Jokanović1*, Z. Girek2, S. Pavlović2, M. Ugrinović2 and J. Zdravković2
1Institute of Field and Vegetable Crops, Maksima Gorkog 30, 21000 Novi Sad, Serbia
2Institute for Vegetable Crops, Karađorđeva 71, 11420 Smederevska Palanka, Serbia

Corresponding Author: milka.brdar@nsseme.com
DOI: N/A
Page Number(s): 869-876
Published Online First: June 01, 2017
Publication Date: June 01, 2017
ABSTRACT

This study was undertaken to investigate the possibilities for breeding drought tolerant tomatoes of different growth type and fruit size. The effects of drought were analyzed and the relationships among the observed traits at optimal irrigation and drought were interpreted using biplot analysis. Greenhouse pot experiment included 40 tomato accessions grown under optimal irrigation and drought (volumetric soil water content 35.0% and 20.9%), designed in complete randomized blocks. Observations were made at the intensive vegetative growth phase. The selection criterion for drought tolerance was plant dry weight. The accessions differed in: the whole plant, shoot and root dry weight, root proportion in plant dry weight (RP), plant height, number of leaves below the first flower branches (NL), number of lateral branches, and the first and second order lateral branches length. Drought resulted in significant decline, with the exceptions of the increased RP and NL. Determinate and indeterminate tomatoes were not significantly different in drought tolerance, implying that both types may be bred for tolerance to the stress; however, the accessions of larger fruit size had comparatively higher water requirements. Results of the biplot analysis indicated that drought tolerance in tomato does not necessarily have to be associated with robust root system and therefore the indirect selection strategy may rely on shoot traits.

Keywords: Biplot, drought, Lycopersicon esculentum, vegetative growth

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Journal Impact Factor: 0.5 | (JCR Year: 2025) | Cite Score: 1.3

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Print ISSN: 1018-7081

Electronic ISSN: 2309-8694

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