Introgression of resistance to Pratylenchus from wild Cicer species into Australian chickpea cultivars

Reen, R. A. and Thompson, J. P. and Knights, E. J. (2011) Introgression of resistance to Pratylenchus from wild Cicer species into Australian chickpea cultivars. In: 4th Asian Conference on Plant Pathology and the 18th Biennial Australasian Plant Pathology Society Conference (ACPP/APPS 2011): New Frontiers in Plant Pathology for Asia and Oceania, 26-29 Apr 2011, Darwin, Australia.

Abstract

Chickpea (Cicer arietinum L.) is a major pulse crop worldwide and is commonly grown in rotation with wheat in the Australian northern grains region. The root‐lesion nematodes (RLN) Prtaylenchus thornei and P. neglecutus cause yield losses of up to 20% and 50% in intolerant chickpea and wheat respectively thus reducing the rotational benefits in a winter cropping regime. Our previous assessments of chickpea germplasm identified seven wild Cicer accessions resistant to Pratylenchus. These accessions were crossed with the commercial chickpea cultivars Jimbour and Howzat and 132 F4 progeny evaluated for resistance to P. thornei and P. neglectus. The wild Cicer accessions ILWC 245, ILWC 246 (C. echinospermum) and ILWC 123, ILWC 140 (C.reticulatum) and 37% of their F4 progeny were significantly more (P<0.05) resistant to P. thornei than all commercial chickpea cultivars, with 12 F4 lines significantly more resistant than moderately resistant wheat cultivar QT8343. All wild Cicer accessions and 43% of F4 progeny had resistance to P. neglectus equal to or better than moderately resistant chickpea cultivar Gully. Currently 118 derivatives from wild Cicer accessions are undergoing further development to combine resistance to RLN and the fungal diseases Ascochyta blight and Phytophthora root rot to produce multiple disease resistant chickpea cultivars that will provide improved rotational benefits and economic gains in winter crop sequences.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Poster)
Refereed: No
Item Status: Live Archive
Additional Information: Abstract only published - #67.
Faculty / Department / School: No Faculty
Date Deposited: 12 Sep 2016 00:39
Last Modified: 15 Sep 2017 02:58
Fields of Research : 06 Biological Sciences > 0607 Plant Biology > 060705 Plant Physiology
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
URI: http://eprints.usq.edu.au/id/eprint/29661

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