NAM gene allelic composition and its relation to grain-filling duration and nitrogen utilisation efficiency of Australian wheat.
NAM gene allelic composition and its relation to grain-filling duration and nitrogen utilisation efficiency of Australian wheat.
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DOI：
10.1371/journal.pone.0205448
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发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
Islam S
中科院分区：
文献类型：
--
作者：
Alhabbar Z;Yang R;Juhasz A;Xin H;She M;Anwar M;Sultana N;Diepeveen D;Ma W;Islam S
优化氮肥管理，结合使用氮效率高的小麦品种，是以经济高效的方式最大限度提高生产率的最有效战略。本研究旨在探讨澳大利亚小麦品种氮素利用效率(NUTE)与NAM基因等位基因组成之间的关系。结果表明，NAM-B1非功能等位基因对氮素水平的反应更为敏感，显著提高了籽粒含氮量，从而提高了籽粒产量，降低了籽粒蛋白质含量。不同发育时期(分蘖中期、孕穗期、开花期)施氮对籽粒产量和蛋白质含量无显著影响。NAM-A1等位基因变异与灌浆期的长短显著相关。NAM-A1等位基因a与中短灌浆期相关，c、d等位基因与中长灌浆期相关。因此，选择合适的NAM基因等位基因组合可以微调影响库-源关系的生育期的持续时间，这为培育适合目标环境的高坚果品种提供了机会。
Optimising nitrogen fertiliser management in combination with using high nitrogen efficient wheat cultivars is the most effective strategy to maximise productivity in a cost-efficient manner. The present study was designed to investigate the associations between nitrogen utilisation efficiency (NUtE) and the allelic composition of the NAM genes in Australian wheat cultivars. As results, the non-functional NAM-B1 allele was more responsive to the nitrogen levels and increased NUtE significantly, leading to a higher grain yield but reduced grain protein content. Nitrogen application at different developmental stages (mid-tillering, booting, and flowering) did not show significant differences in grain yield and protein content. The NAM-A1 allelic variation is significantly associated with the length of the grain-filling period. While the NAM-A1 allele a was associated with a short to moderate grain-filling phase, the alleles c and d were related to moderate to long grain-filling phase. Thus, selection of appropriate combinations of NAM gene alleles can fine-tune the duration of growth phases affecting sink-source relationships which offers an opportunity to develop high NUtE cultivars for target environments.
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影响因子：
2.3
作者：
GEBEYEHOU, G;KNOTT, DR;BAKER, RJ
通讯作者：
BAKER, RJ
影响因子：
2.3
作者：
GEBEYEHOU, G;KNOTT, DR;BAKER, RJ
通讯作者：
BAKER, RJ
影响因子：
5.8
作者：
Fischer, R. A.
通讯作者：
Fischer, R. A.
影响因子：
5.2
作者：
Arduini, I.;Masoni, A.;Mariotti, M.
通讯作者：
Mariotti, M.
影响因子：
3.7
作者：
Borrill P;Fahy B;Smith AM;Uauy C
通讯作者：
Uauy C