Dear editor,In the 1960s,the use of semi-dwarf rice and wheat varieties ushered in the‘‘Green Revolution,’’leading to reduced lodging and increased harvest index.In rice,essentially all modern semidwarf varieties ...Dear editor,In the 1960s,the use of semi-dwarf rice and wheat varieties ushered in the‘‘Green Revolution,’’leading to reduced lodging and increased harvest index.In rice,essentially all modern semidwarf varieties carry a specific null mutation or weak alleles of Semi-Dwarf1(SD1),which encodes a GA20-2 oxidase in the gibberellin biosynthetic pathway(Monna et al.,2002;Sasaki et al.,2002;Spielmeyer et al.,2002).In addition to gibberellins,other plant hormones such as brassinosteroids,strigolactones,and auxin also function in reducing rice height(Ferrero-Serrano et al.,2019).However,many dwarf or semi-dwarf mutants have not been widely used in rice-breeding programs because they adversely impact grain yield(Ferrero-Serrano et al.,2019).展开更多
基金This work was supported by grants from the National Natural Science Foundation of China(32130080)to X.G.the Central Public-interest Scientific Institution Basal Research Fund(Y2022PT22)to X.G.+2 种基金the Agricultural Science and Technology Innovation Program(CAAS-ZDRW202109)the Hainan Yazhou Bay Seed Laboratory(B21HJ0223)to X.G.the Key Technologies R&D Program of Tianjin(18YFZCNC01210)to S.Y.
文摘Dear editor,In the 1960s,the use of semi-dwarf rice and wheat varieties ushered in the‘‘Green Revolution,’’leading to reduced lodging and increased harvest index.In rice,essentially all modern semidwarf varieties carry a specific null mutation or weak alleles of Semi-Dwarf1(SD1),which encodes a GA20-2 oxidase in the gibberellin biosynthetic pathway(Monna et al.,2002;Sasaki et al.,2002;Spielmeyer et al.,2002).In addition to gibberellins,other plant hormones such as brassinosteroids,strigolactones,and auxin also function in reducing rice height(Ferrero-Serrano et al.,2019).However,many dwarf or semi-dwarf mutants have not been widely used in rice-breeding programs because they adversely impact grain yield(Ferrero-Serrano et al.,2019).
