The responses of japonica dwarf varieties to gibberellic acid treatment at seedling and adult stage
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S511.22

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    Abstract:

    The effect of GA_3 on 28 japonica dwarf varieties was studied.The results showed that the response of the plants to GA_3 of most tested varieties were similar at seedling and shooting stages while there was a little difference in some varieties.In japonica rice,the varieties with sd-1 dwarf gene were sensitive to GA_3.However,not all the GA_3-sensitive varieties have sd-1 gene.It is concluded that Ai-4 and Ziyeai might carry non-allelic to sd-1.The effect of GA_3 on the elements of plant height was different.Of all elements of plant height,the response of first and second base internodes to GA_3 were most significant.

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  • Received:
  • Revised:February 05,2001
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