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| 001 | 201957 | ||
| 005 | 20210129215952.0 | ||
| 024 | 7 | _ | |a 10.1093/jxb/erv289 |2 doi |
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| 245 | _ | _ | |a Impact of domestication on the phenotypic architecture of durum wheat under contrasting nitrogen fertilization |
| 260 | _ | _ | |a Oxford |c 2015 |b Univ. Press |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1440578747_27025 |2 PUB:(DE-HGF) |
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| 520 | _ | _ | |a The process of domestication has led to dramatic morphological and physiological changes in crop species due toadaptation to cultivation and to the needs of farmers. To investigate the phenotypic architecture of shoot- and rootrelatedtraits and quantify the impact of primary and secondary domestication, we examined a collection of 36 wheatgenotypes under optimal and nitrogen-starvation conditions. These represented three taxa that correspond to key stepsin the recent evolution of tetraploid wheat (i.e. wild emmer, emmer, and durum wheat). Overall, nitrogen starvationreduced the shoot growth of all genotypes, while it induced the opposite effect on root traits, quantified using theautomated phenotyping platform GROWSCREEN-Rhizo. We observed an overall increase in all of the shoot and rootgrowth traits from wild emmer to durum wheat, while emmer was generally very similar to wild emmer but intermediatebetween these two subspecies. While the differences in phenotypic diversity due to the effects of primary domesticationwere not significant, the secondary domestication transition from emmer to durum wheat was marked by a large andsignificant decrease in the coefficient of additive genetic variation. In particular, this reduction was very strong underthe optimal condition and less intense under nitrogen starvation. Moreover, although under the optimal condition bothroot and shoot traits showed significantly reduced diversity due to secondary domestication, under nitrogen starvationthe reduced diversity was significant only for shoot traits. Overall, a considerable amount of phenotypic variation wasobserved in wild emmer and emmer, which could be exploited for the development of pre-breeding strategies. |
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| 700 | 1 | _ | |a Papa, R. |0 P:(DE-Juel1)165697 |b 8 |e Corresponding Author |u fzj |
| 773 | _ | _ | |a 10.1093/jxb/erv289 |g p. erv289 |0 PERI:(DE-600)1466717-4 |n 18 |p 5519-5530 |t The @journal of experimental botany |v 66 |y 2015 |x 0022-0957 |
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