Root architecture alteration of narrow-leafed lupin and wheat in response to soil compaction

Yinglong Chen, Jairo Palta, J.C. Clements, Bevan Buirchell, Kadambot Siddique, Zed Rengel

Research output: Contribution to journalArticle

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Abstract

Root system architecture influences nutrient and water uptake efficiency and thus plant growth and productivity. Root architecture traits conferring efficiency in capturing resources from soil are considered a key factor in crop breeding for enhanced water and nutrient uptake. Mechanical impedance such as soil compaction is common in the Western Australian wheatbelt, limiting root growth and crop productivity. The present study investigated root responses to subsoil compaction in two field trials at Wongan Hills (central wheatbelt) and Buntine (northern wheatbelt) in Western Australia. Substantial alteration to rooting patterns was observed in the commercial wheat cultivar Wyalkatchem and in narrow-leafed lupin (Lupinus angustifolius) grown in sandy soils where compaction is common. The root systems of narrow-leafed lupin plants were dominated by a short and thickened taproot (10-26. cm depth, 7-14. mm root-collar diameter) and horizontally distributed primary lateral roots when compared to previous observations of the same genotypes under non-compacted soil conditions. Genotypic variability in root architecture traits among four wild genotypes and four commercial cultivars (Mandelup, Merrit, Quilinock and Tanjil) of narrow-leafed lupin was demonstrated. Taproot length, total root length, root surface area, root mass and root collar diameter were the most important root traits correlated to shoot yield (P
LanguageEnglish
Pages61-70
JournalField Crops Research
Volume165
Early online date14 May 2014
DOIs
StatePublished - 15 Aug 2014

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root architecture
Lupinus angustifolius
soil compaction
wheat
root crown
water uptake
nutrient uptake
root systems
root system
cultivar
genotype
productivity
impedance
crop
cultivars
plant breeding
subsoil
Western Australia
sandy soils
rooting

Cite this

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title = "Root architecture alteration of narrow-leafed lupin and wheat in response to soil compaction",
abstract = "Root system architecture influences nutrient and water uptake efficiency and thus plant growth and productivity. Root architecture traits conferring efficiency in capturing resources from soil are considered a key factor in crop breeding for enhanced water and nutrient uptake. Mechanical impedance such as soil compaction is common in the Western Australian wheatbelt, limiting root growth and crop productivity. The present study investigated root responses to subsoil compaction in two field trials at Wongan Hills (central wheatbelt) and Buntine (northern wheatbelt) in Western Australia. Substantial alteration to rooting patterns was observed in the commercial wheat cultivar Wyalkatchem and in narrow-leafed lupin (Lupinus angustifolius) grown in sandy soils where compaction is common. The root systems of narrow-leafed lupin plants were dominated by a short and thickened taproot (10-26. cm depth, 7-14. mm root-collar diameter) and horizontally distributed primary lateral roots when compared to previous observations of the same genotypes under non-compacted soil conditions. Genotypic variability in root architecture traits among four wild genotypes and four commercial cultivars (Mandelup, Merrit, Quilinock and Tanjil) of narrow-leafed lupin was demonstrated. Taproot length, total root length, root surface area, root mass and root collar diameter were the most important root traits correlated to shoot yield (P",
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Root architecture alteration of narrow-leafed lupin and wheat in response to soil compaction. / Chen, Yinglong; Palta, Jairo; Clements, J.C.; Buirchell, Bevan; Siddique, Kadambot; Rengel, Zed.

In: Field Crops Research, Vol. 165, 15.08.2014, p. 61-70.

Research output: Contribution to journalArticle

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AU - Siddique,Kadambot

AU - Rengel,Zed

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