Interactions between two QTLs for time to anthesis on spike development and fertility in wheat.
Interactions between two QTLs for time to anthesis on spike development and fertility in wheat.
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DOI：
10.1038/s41598-021-81857-6
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发表时间：
2021-01-28
影响因子：
4.6
通讯作者：
Slafer GA
中科院分区：
文献类型：
--
作者：
Basavaraddi PA;Savin R;Wingen LU;Bencivenga S;Przewieslik-Allen AM;Griffiths S;Slafer GA
据报道，早熟性本身(EPS)基因在微调小麦开花时间方面是重要的，不受光周期(PPD)和春化(VRN)的影响。与PPD和VRN基因不同，EPS的作用相对较小，其生理作用以及染色体位置还没有很好的确定。为了研究新发现的两个QTL EPS-7D和EPS-2B在田间条件下的效应及其互作，我们对两个春化不敏感系Paragon和Baj(分别为晚花和早花)杂交产生的8个品系进行了评价。两个QTL的效应都很小，且受另一个QTL的等位基因状态的影响。虽然这些QTL对开花的影响程度相似，但它们与开花前发育的不同特征有关，这也取决于它们的交互作用。EPS-7D影响顶生小穗前后的持续时间，但不影响最终叶数，因此EPS-7D早熟出叶速度较快。EPS-2B在生殖早期的作用更具特异性，在不影响叶片出苗率的情况下，略微改变了Fln。这两个QTL都通过改变小花发育速率和死亡率来影响穗育性。EPS-2B的影响很小，但一致的是，晚等位基因往往会产生更多的可育小花。
Earliness per se (Eps) genes are reported to be important in fine-tuning flowering time in wheat independently of photoperiod (Ppd) and vernalisation (Vrn). Unlike Ppd and Vrn genes, Eps have relatively small effects and their physiological effect along with chromosomal position are not well defined. We evaluated eight lines derived from crossing two vernalisation insensitive lines, Paragon and Baj (late and early flowering respectively), to study the detailed effects of two newly identified QTLs, Eps-7D and Eps-2B and their interactions under field conditions. The effect of both QTLs was minor and was affected by the allelic status of the other. While the magnitude of effect of these QTLs on anthesis was similar, they are associated with very different profiles of pre-anthesis development which also depends on their interaction. Eps-7D affected both duration before and after terminal spikelet while not affecting final leaf number (FLN) so Eps-7D-early had a faster rate of leaf appearance. Eps-2B acted more specifically in the early reproductive phase and slightly altered FLN without affecting the leaf appearance rate. Both QTLs affected the spike fertility by altering the rate of floret development and mortality. The effect of Eps-2B was very small but consistent in that -late allele tended to produce more fertile florets.
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影响因子：
13.8
作者：
Allen AM;Winfield MO;Burridge AJ;Downie RC;Benbow HR;Barker GL;Wilkinson PA;Coghill J;Waterfall C;Davassi A;Scopes G;Pirani A;Webster T;Brew F;Bloor C;Griffiths S;Bentley AR;Alda M;Jack P;Phillips AL;Edwards KJ
通讯作者：
Edwards KJ
影响因子：
1.9
作者：
HOOGENDOORN, J
通讯作者：
HOOGENDOORN, J
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：
7.4
作者：
Ejaz, Mahwish;von Korff, Maria
通讯作者：
von Korff, Maria
影响因子：
5.4
作者：
Kamran, A.;Iqbal, M.;Spaner, D.
通讯作者：
Spaner, D.