Wheat Developmental Traits as Affected by the Interaction between Eps-7D and Temperature under Contrasting Photoperiods with Insensitive Ppd-D1 Background.
Wheat Developmental Traits as Affected by the Interaction between Eps-7D and Temperature under Contrasting Photoperiods with Insensitive Ppd-D1 Background.
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Ppd-D1不敏感背景下不同光周期下Eps-7 D与温度互作对小麦发育性状的影响
DOI：
10.3390/plants10030547
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发表时间：
2021-03-13
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
早熟基因是小麦适应性调控的重要基因，研究其对小麦产量性状的多效性具有重要意义。此外，已经表明一些Eps基因与温度相互作用，因此需要确定每个新鉴定的Eps基因可能的Eps ×温度相互作用。我们研究了两个不同的近等离子体在三个温度制度（9，15和18 °C）和两个光周期（12和24小时）下，在新发现的Eps-7 D（携带不敏感的Ppd-D1的背景）。Eps-7 D对开花时间的影响与预期一致，Eps-7 D-late等位基因延长了顶生小穗前后的开花时间。Eps-7 D ×温度的互作效应是显著的，但不交叉：具有晚或早等位基因的近等基因系之间差异的幅度和显著性水平受到生长温度的影响（即，差异在18 °C时最小，在9 °C时最大），温度敏感性引起的差异受光周期的影响。Eps-7 D-早的近等基因的叶片起始速率比晚的等位基因快，这补偿了叶片起始的较短持续时间，导致两个近等基因之间的最终叶片数相似。Eps-7 D-晚期通过延长后期生殖期提高小花原基存活率，持续提高穗育性。
Earliness per se (Eps) genes are important to fine tune adaptation, and studying their probable pleiotropic effect on wheat yield traits is worthwhile. In addition, it has been shown that some Eps genes interact with temperature and therefore determining the likely Eps × temperature interaction is needed for each newly identified Eps gene. We studied two NILs differing in the newly identified Eps-7D (carrying insensitive Ppd-D1 in the background) under three temperature regimes (9, 15 and 18 °C) and two photoperiods (12 and 24 h). Eps-7D affected time to anthesis as expected and the Eps-7D-late allele extended both the period before and after terminal spikelet. The interaction effect of Eps-7D × temperature was significant but not cross-over: the magnitude and level of significance of the difference between NILs with the late or early allele was affected by the growing temperature (i.e., difference was least at 18 °C and largest at 9 °C), and the differences caused due to temperature sensitivity were influenced by photoperiod. The rate of leaf initiation was faster in NIL with Eps-7D-early than with the late allele which compensated for the shorter duration of leaf initiation resulting in similar final leaf number between two NILs. Eps-7D-late consistently increased spike fertility through improving floret primordia survival as a consequence of extending the late reproductive phase.
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影响因子：
5.2
作者：
Makowski, David;Marajo-Petitzon, Elodie;Ben-Ari, Tamara
通讯作者：
Ben-Ari, Tamara
DOI：
10.3390/plants10030533
发表时间：
2021-03-12
期刊：
Plants (Basel, Switzerland)
影响因子：
--
作者：
Basavaraddi PA;Savin R;Bencivenga S;Griffiths S;Slafer GA
通讯作者：
Slafer GA
影响因子：
3
作者：
González, FG;Slafer, GA;Miralles, DJ
通讯作者：
Miralles, DJ
影响因子：
64.8
作者：
Gillooly, JF;Charnov, EL;Brown, JH
通讯作者：
Brown, JH
影响因子：
2.1
作者：
HAUN, JR
通讯作者：
HAUN, JR