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@INPROCEEDINGS{Gioia:201163,
author = {Gioia, Tania and Nagel, Kerstin and romina, beleggia and
mariagiovanna, fragasso and donatella, ficco and Pieruschka,
Roland and pasquale, devita and Fiorani, Fabio and Papa,
Roberto},
title = {{T}he phenotypic architecture of tetraploid wheat
({T}riticum turgidum {L}.): effects of domestication and
post-domestication under contrasting nitrogen fertilisation},
reportid = {FZJ-2015-03468},
year = {2015},
abstract = {The process of domestication has led to dramatic
morphological and physiological changes in crop species due
to adaptation to cultivation and to the needs of farmers. To
investigate the phenotypic architecture of shoot- and
root-related traits and quantify the impact of domestication
and post-domestication, we examined a collection of 36 wheat
genotypes under optimal and nitrogen-starved conditions.
These represented three taxa that correspond to key steps in
the recent evolution of tetraploid wheat (i.e., wild emmer,
emmer, and durum wheat). Overall, nitrogen starvation
reduced shoot growth of all genotypes, while it induced the
opposite effect on root traits quantified using the
automated phenotyping platform GROWSCREEN-Rhizo. We observed
an overall increase in all shoot and root growth traits from
wild emmer to durum wheat, while emmer was generally very
similar to wild emmer, but intermediate between these two
subspecies. While the differences in phenotypic diversity
due to the effects of domestication were not significant,
the post-domestication transition from emmer to durum wheat
was marked by a large and significant decrease in the
coefficient of variation. In particular, this reduction was
very strong at optimal condition, and less intense under
nitrogen starvation. Moreover, while at optimal condition
both root and shoot traits showed significantly reduced
diversity due to post-domestication, under nitrogen
starvation the reduced diversity was significant only for
shoot traits. Overall, a considerable amount of phenotypic
variation was observed in wild emmer and emmer which could
be exploited for the development of pre-breeding
strategies.},
month = {May},
date = {2015-05-30},
organization = {From Seed to Pasta and Beyond: a
Sustainable Durum Wheat Chain for Food
Security and Healthy Lives, Bologna
(Italy), 30 May 2015 - 3 Jun 2015},
subtyp = {Invited},
cin = {IBG-2},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582) / EPPN - European Plant
Phenotyping Network (284443)},
pid = {G:(DE-HGF)POF3-582 / G:(EU-Grant)284443},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/201163},
}