Sensitivity of Rice Elongation to GA3 and TheirRelationship with GA1+4 Content

doi:10.3321/j.issn:1000-7091.1998.02.009

Abstract

Abstract: The sensitivity of the second leave sheath,plant height,panicle axis,the last but one internode of 4 rice cultivars to GA₃ were studied with the microdrop and spraying methods in this experiment.It was found that the second leave sheath,plant height,panicle axis and the last but one internode of Aigui(AG) were non sensitive to GA₃.However,Wannianqing(WNQ),Congshengzhulianai(CSZLA) and Teaidao(TAD) were sensitive to GA₃.CSZLA was the most sensitive,and their second leave sheath and plant height increased to 121.1% and 185.1% respectively.TheGA₁₊₄ contents in the second leave sheath and panicle of 4 rice cultivars.were determined with enzyme linked immuno sorbent assay.The results showed thatGA₁₊₄ contents in CSZLA was remarkably lower than those of the other three cultivars,andGA₁₊₄ contents in WNQ,AG and TAD were　similar.It was suggested that CSZLA was a GA deficient mutant and AG was a GA non sensitive mutant.

Key words: Rice, Elongation, GA₃ sensitivity, GA₁₊₄ content

CLC Number:

S511.1

Huang Shaobai, Liu Xiaozhong. Sensitivity of Rice Elongation to GA₃ and TheirRelationship with GA₁₊₄ Content[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(2): 48-52. doi: 10.3321/j.issn:1000-7091.1998.02.009.

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