Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil

J. Sergio Moroni; Mark Conyers; Neil Wratten

Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil

J. Sergio Moroni, Mark Conyers, Neil Wratten

Agricultural, Environmental and Veterinary Sciences

NSW Department of Primary Industries (NSW DPI)

Research output: Book chapter/Published conference paper › Conference paper › peer-review

Abstract

Canola is sensitive to acidic soils, and therefore apparently to aluminium (Al). Selection for resistance to Al is thus an important canola breeding objective. The primary site of Al toxicity is the root apex which severely restricts root growth. Relative root weight (RRW= root weight relative to control), therefore, best reflects the level of Al resistance among plants. In one experiment, two canola and two wheat cultivars were evaluated for resistance to Al under 9 Al concentrations (0-160 µM) in solution culture. The Al resistant wheat cv. Diamondbird and the Al sensitive wheat cv. Janz showed a typical Al-dose growth response while the canola cvs. Oscar and Rainbow were as resistant to Al as Diamondbird. In another experiment, 24 genotypes were evaluated in 100 µM Al. Twenty three genotypes had a RRW above 50% and 7 genotypes above 75%; only the B. juncea genotype had a RRW below 50%. Although many rapeseed genotypes were highly resistant to Al in solution culture this resistance was not expressed in an acid soil. Plants grown in acid soil showed severe chlorosis, necrosis and shoot stunting. These results indicated that nutrient solution culture may be unsuitable for evaluating rapeseed germplasm for resistance to Al and hence resistance to acid soils. An alternative Al-resistance model of rapeseed that may explain the discrepancies observed between nutrient solution and acid soil evaluations is needed. (NSW DPI - Acid Soil Action)

Original language	English
Title of host publication	Proceedings of 13th Agronomy Conference (AAC)
Subtitle of host publication	Ground-breaking stuff
Editors	T. Acuna, R.C. Johnson, N. C. Turner
Place of Publication	Perth, Western Australia
Publisher	The Regional Institute
Pages	1-2
Number of pages	2
ISBN (Electronic)	1920842314
Publication status	Published - 2006
Event	13th Australian Agronomy Conference - Perth, Western Australia, Australia Duration: 10 Sept 2006 → 14 Sept 2006

Conference

Conference	13th Australian Agronomy Conference
Country/Territory	Australia
Period	10/09/06 → 14/09/06

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Moroni, J. S., Conyers, M., & Wratten, N. (2006). Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil. In T. Acuna, R. C. Johnson, & N. C. Turner (Eds.), Proceedings of 13th Agronomy Conference (AAC): Ground-breaking stuff (pp. 1-2). The Regional Institute. http://www.regional.org.au/au/asa/2006/poster/soil/4718_moronij.htm

@inproceedings{f640a49ec09d48e1bad9f249dd434993,

title = "Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil",

abstract = "Canola is sensitive to acidic soils, and therefore apparently to aluminium (Al). Selection for resistance to Al is thus an important canola breeding objective. The primary site of Al toxicity is the root apex which severely restricts root growth. Relative root weight (RRW= root weight relative to control), therefore, best reflects the level of Al resistance among plants. In one experiment, two canola and two wheat cultivars were evaluated for resistance to Al under 9 Al concentrations (0-160 µM) in solution culture. The Al resistant wheat cv. Diamondbird and the Al sensitive wheat cv. Janz showed a typical Al-dose growth response while the canola cvs. Oscar and Rainbow were as resistant to Al as Diamondbird. In another experiment, 24 genotypes were evaluated in 100 µM Al. Twenty three genotypes had a RRW above 50% and 7 genotypes above 75%; only the B. juncea genotype had a RRW below 50%. Although many rapeseed genotypes were highly resistant to Al in solution culture this resistance was not expressed in an acid soil. Plants grown in acid soil showed severe chlorosis, necrosis and shoot stunting. These results indicated that nutrient solution culture may be unsuitable for evaluating rapeseed germplasm for resistance to Al and hence resistance to acid soils. An alternative Al-resistance model of rapeseed that may explain the discrepancies observed between nutrient solution and acid soil evaluations is needed. (NSW DPI - Acid Soil Action)",

keywords = "wheat, canola, B. juncea, aluminum, screening",

author = "Moroni, {J. Sergio} and Mark Conyers and Neil Wratten",

note = "Imported on 03 May 2017 - DigiTool details were: publisher = Perth, Western Australia: The Regional Institute, 2006. editor/s (773b) = Turner N C , Acuna T and Johnson, R C; Event dates (773o) = 10-14 Sept 2006; Parent title (773t) = Australian Agronomy Conference (AAC).; 13th Australian Agronomy Conference ; Conference date: 10-09-2006 Through 14-09-2006",

year = "2006",

language = "English",

pages = "1--2",

editor = "T. Acuna and R.C. Johnson and Turner, {N. C.}",

booktitle = "Proceedings of 13th Agronomy Conference (AAC)",

publisher = "The Regional Institute",

}

Moroni, JS, Conyers, M & Wratten, N 2006, Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil. in T Acuna, RC Johnson & NC Turner (eds), Proceedings of 13th Agronomy Conference (AAC): Ground-breaking stuff. The Regional Institute, Perth, Western Australia, pp. 1-2, 13th Australian Agronomy Conference, Australia, 10/09/06. <http://www.regional.org.au/au/asa/2006/poster/soil/4718_moronij.htm>

Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil. / Moroni, J. Sergio; Conyers, Mark; Wratten, Neil.
Proceedings of 13th Agronomy Conference (AAC): Ground-breaking stuff. ed. / T. Acuna; R.C. Johnson; N. C. Turner. Perth, Western Australia: The Regional Institute, 2006. p. 1-2.

Research output: Book chapter/Published conference paper › Conference paper › peer-review

TY - GEN

T1 - Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil

AU - Moroni, J. Sergio

AU - Conyers, Mark

AU - Wratten, Neil

N1 - Imported on 03 May 2017 - DigiTool details were: publisher = Perth, Western Australia: The Regional Institute, 2006. editor/s (773b) = Turner N C , Acuna T and Johnson, R C; Event dates (773o) = 10-14 Sept 2006; Parent title (773t) = Australian Agronomy Conference (AAC).

PY - 2006

Y1 - 2006

N2 - Canola is sensitive to acidic soils, and therefore apparently to aluminium (Al). Selection for resistance to Al is thus an important canola breeding objective. The primary site of Al toxicity is the root apex which severely restricts root growth. Relative root weight (RRW= root weight relative to control), therefore, best reflects the level of Al resistance among plants. In one experiment, two canola and two wheat cultivars were evaluated for resistance to Al under 9 Al concentrations (0-160 µM) in solution culture. The Al resistant wheat cv. Diamondbird and the Al sensitive wheat cv. Janz showed a typical Al-dose growth response while the canola cvs. Oscar and Rainbow were as resistant to Al as Diamondbird. In another experiment, 24 genotypes were evaluated in 100 µM Al. Twenty three genotypes had a RRW above 50% and 7 genotypes above 75%; only the B. juncea genotype had a RRW below 50%. Although many rapeseed genotypes were highly resistant to Al in solution culture this resistance was not expressed in an acid soil. Plants grown in acid soil showed severe chlorosis, necrosis and shoot stunting. These results indicated that nutrient solution culture may be unsuitable for evaluating rapeseed germplasm for resistance to Al and hence resistance to acid soils. An alternative Al-resistance model of rapeseed that may explain the discrepancies observed between nutrient solution and acid soil evaluations is needed. (NSW DPI - Acid Soil Action)

AB - Canola is sensitive to acidic soils, and therefore apparently to aluminium (Al). Selection for resistance to Al is thus an important canola breeding objective. The primary site of Al toxicity is the root apex which severely restricts root growth. Relative root weight (RRW= root weight relative to control), therefore, best reflects the level of Al resistance among plants. In one experiment, two canola and two wheat cultivars were evaluated for resistance to Al under 9 Al concentrations (0-160 µM) in solution culture. The Al resistant wheat cv. Diamondbird and the Al sensitive wheat cv. Janz showed a typical Al-dose growth response while the canola cvs. Oscar and Rainbow were as resistant to Al as Diamondbird. In another experiment, 24 genotypes were evaluated in 100 µM Al. Twenty three genotypes had a RRW above 50% and 7 genotypes above 75%; only the B. juncea genotype had a RRW below 50%. Although many rapeseed genotypes were highly resistant to Al in solution culture this resistance was not expressed in an acid soil. Plants grown in acid soil showed severe chlorosis, necrosis and shoot stunting. These results indicated that nutrient solution culture may be unsuitable for evaluating rapeseed germplasm for resistance to Al and hence resistance to acid soils. An alternative Al-resistance model of rapeseed that may explain the discrepancies observed between nutrient solution and acid soil evaluations is needed. (NSW DPI - Acid Soil Action)

KW - wheat

KW - canola

KW - B. juncea

KW - aluminum

KW - screening

UR - http://www.regional.org.au/about/goals.htm

M3 - Conference paper

SP - 1

EP - 2

BT - Proceedings of 13th Agronomy Conference (AAC)

A2 - Acuna, T.

A2 - Johnson, R.C.

A2 - Turner, N. C.

PB - The Regional Institute

CY - Perth, Western Australia

T2 - 13th Australian Agronomy Conference

Y2 - 10 September 2006 through 14 September 2006

ER -

Resistance of rapeseed (Brassica napus L.) to aluminium apparent in nutrient solution but not in soil

Abstract

Conference

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