NDLI: Effect of species, root branching order and season on the root traits of 13 perennial grass species

Content Provider	Springer Nature Link
Author	Picon Cochard, Catherine Pilon, Rémi Tarroux, Emilie Pagès, Loïc Robertson, Jean Dawson, Lorna
Copyright Year	2011
Abstract	Inter-specific comparisons of plant traits may vary depending on intra-specific variation. Here we examine the impact of root branching order and season on key functional root traits for grass species. We also compare root traits among co-existing grass species as a step towards defining root trait syndromes.Monocultures of 13 grass species, grown under field conditions and subjected to intensive management, were used to record root trait values for coarse roots (1st order, >0.3 mm), fine roots (2nd and 3rd orders, <0.2 mm) and mixed root samples over three growing seasons.Branching order and species had a significant effect on root trait values, whereas season showed a marginal effect. The diameter of coarse roots was more variable than that of fine roots and, as expected, coarse roots had higher tissue density and lower specific root length values than fine roots. Principal component analysis run on eight root traits provided evidence for two trait syndromes related to resource acquisition and conservation strategies across grass species.Our data show that root branching order is the main determinant of root trait variation among species. This highlights the necessity to include the proportion of fine vs coarse roots when measuring traits of mixed root samples.
Starting Page	47
Ending Page	57
Page Count	11
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	353
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-10-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Grassland Root morphology Root architecture Root respiration Root trait syndromes Plant Sciences Plant Physiology Soil Science & Conservation Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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