Phenology and Floret Development as Affected by the Interaction between Eps-7D and Ppd-D1.
Phenology and Floret Development as Affected by the Interaction between Eps-7D and Ppd-D1.
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Eps-7D和Ppd-D1互作对小花物候和发育的影响
DOI：
10.3390/plants10030533
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发表时间：
2021-03-12
期刊：
影响因子：
--
通讯作者：
Slafer GA
中科院分区：
文献类型：
--
作者：
Basavaraddi PA;Savin R;Bencivenga S;Griffiths S;Slafer GA
早熟性本身(EPS)基因可能在进一步改善小麦适应性和微调小麦发育以应对气候变化方面发挥关键作用。关于EPS对小麦发育的详细影响的研究很少，对EPS与环境和其他决定开花时间的基因的交互作用的研究也很少。此外，研究每个新发现的EPS基因及其可能的相互作用似乎是相关的，因为每个EPS的机制和详细作用可能非常不同。在本研究中，我们评估了在短日照下三种温度(9、15和18°C)下近交系在新近鉴定的EPS-7D和PPD-D1中的不同。EPS-7D对开花时间及其组成相的影响因PPD-D1的等位基因状态和温度的不同而在定性和定量上有所不同，在光周期敏感的背景下，EPS-7D的影响更大。EPS-7D(当与PPD-D1b结合使用时)在生殖后期实现了更明显的效果。因此，EPS-7D没有明显改变最终的叶数，而EPS-7D-Late等位基因的作用有利于不稳定小花(在这种情况下，小花2和3，取决于特定的小穗)的小花发育，增加了特定小花变得可育的可能性，因此，当与PPD-D1b结合时，改善了穗育性。
Earliness per se (Eps) genes may play a critical role in further improving wheat adaptation and fine-tuning wheat development to cope with climate change. There are only few studies on the detailed effect of Eps on wheat development and fewer on the interaction of Eps with the environment and other genes determining time to anthesis. Furthermore, it seems relevant to study every newly discovered Eps gene and its probable interactions as the mechanisms and detailed effects of each Eps may be quite different. In the present study, we evaluated NILs differing in the recently identified Eps-7D as well as in Ppd-D1 at three temperature regimes (9, 15 and 18 °C) under short day. The effect of Eps-7D on time to anthesis as well as on its component phases varied both qualitatively and quantitatively depending on the allelic status of Ppd-D1 and temperature, being larger in a photoperiod-sensitive background. A more noticeable effect of Eps-7D (when combined with Ppd-D1b) was realised during the late reproductive phase. Consequently, the final leaf number was not clearly altered by Eps-7D, while floret development of the labile florets (florets 2 and 3 in this case, depending on the particular spikelet) was favoured by the action of the Eps-7D-late allele, increasing the likelihood of particular florets to become fertile, and consequently, improving spike fertility when combined with Ppd-D1b.
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DOI：
10.1007/s11032-014-0034-2
发表时间：
2014
期刊：
Molecular breeding : new strategies in plant improvement
影响因子：
--
作者：
Kiss T;Balla K;Veisz O;Láng L;Bedő Z;Griffiths S;Isaac P;Karsai I
通讯作者：
Karsai I
DOI：
10.1071/pp00021
发表时间：
2000-01-01
期刊：
AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY
影响因子：
--
作者：
Miralles, DJ;Richards, RA;Slafer, GA
通讯作者：
Slafer, GA
影响因子：
2.3
作者：
MOSAAD, MG;ORTIZFERRARA, G;FISCHER, RA
通讯作者：
FISCHER, RA
影响因子：
3
作者：
González, FG;Slafer, GA;Miralles, DJ
通讯作者：
Miralles, DJ
影响因子：
5.4
作者：
Kamran, A.;Iqbal, M.;Spaner, D.
通讯作者：
Spaner, D.