Characterization of Gibberellin-Responding and Non-Responding Dwarf Mutants in Foxtail Millet

doi:10.3321/j.issn:1000-7091.1998.01.009

Abstract

Abstract: Seedlings of foxtail millet(Setaria italica Beauv.)dwarf mutants,Aininghuang( ANH),623C and CH84113 were tr eated with gibberellins (GA₁,GA₃,GA₄,GA₇ and GA₉)by micro-drop method and by pre-soaking in GA₃ solution.Further,plants were sprayed with GA₃ solution at jointing stage.It was found that ANH and 623C were GA- respondingdwarf mutants,whose leaf blade,leaf sheath and elongating internodes lengh increased significantly after GA application,whereas CH84113 was anon- GA-responding dwarf mutant.Using on enzyme-linked immunosorbent assay(ELISA),it was found that the endogenous GA₁₊₃ contents inculms of all three dwarf mutants decreased by 50% or so in comparing with the normal cultivars,Jigu11(JG11),Zhaogu1 (ZG1) and Qingfenggu(QFG).

Key words: Foxtail millet(Setaria italica Beauv), Dwarfism, Mutant, Gibberellins, Sensitivity

CLC Number:

S511

Chen Jingui, Zhang Yuzong, Zhou Xie. Characterization of Gibberellin-Responding and Non-Responding Dwarf Mutants in Foxtail Millet[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(1): 46-52. doi: 10.3321/j.issn:1000-7091.1998.01.009.

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