Dear Editor,Wheat grain number,determined by spikelet number and floret fruiting efficiency,is a key determinant of yield.Normally,a wheat spike bears 16-28 spikelets(Niu et al.,2023),each forming up to 10 florets.How...Dear Editor,Wheat grain number,determined by spikelet number and floret fruiting efficiency,is a key determinant of yield.Normally,a wheat spike bears 16-28 spikelets(Niu et al.,2023),each forming up to 10 florets.However,less than half of the florets successfully set grains,and each fertile floret produces a single grain(Guo and Schnurbusch,2015).First described in 1983,the tri-pistil wheat(TP1)(Chen et al.,1983),also known as tri-grain or multi-ovary wheat(Wang et al.,2009),is remarkable for its exceptional floret fruiting efficiency.Each floret develops three pistils without any defects in other floral organs,consequently forming three tightly packed grains after fertilization.The TP locus has been mapped to chromosome 2D(Yang et al.,2017;Mahlandt et al.,2021).However,the causative gene remains unidentified,and its molecular mechanism is still unknown.展开更多
文摘Dear Editor,Wheat grain number,determined by spikelet number and floret fruiting efficiency,is a key determinant of yield.Normally,a wheat spike bears 16-28 spikelets(Niu et al.,2023),each forming up to 10 florets.However,less than half of the florets successfully set grains,and each fertile floret produces a single grain(Guo and Schnurbusch,2015).First described in 1983,the tri-pistil wheat(TP1)(Chen et al.,1983),also known as tri-grain or multi-ovary wheat(Wang et al.,2009),is remarkable for its exceptional floret fruiting efficiency.Each floret develops three pistils without any defects in other floral organs,consequently forming three tightly packed grains after fertilization.The TP locus has been mapped to chromosome 2D(Yang et al.,2017;Mahlandt et al.,2021).However,the causative gene remains unidentified,and its molecular mechanism is still unknown.
