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Varietal Difference in the Effects of Applied Gibberellic Acid (GA3) on the Number of Spikelets per Panicle in Rice Plants
GA3 Gibberellic acid application Internode diameter Number of spikelets per panicle Rice Varietal difference
2009/7/31
Eight rice varieties were grown in pots and the varietal difference in the effects of applied gibberellic acid (GA3) on the number of spikelets per panicle were examined. GA3 (5 ppm) was sprayed onto ...
杂交稻制种田九二○用量与种子中GA3含量及F1代产生徒长苗的关系
杂交稻 赤霉素 徒长苗
2008/8/22
以杂交水稻组合汕优63为材料进行研究。结果表明，杂交稻制种抽穗期施用九二○，在其所产种子中会有一定量的GA3积累，其GA3的含量与制种时抽穗期九二○施用量呈正相关。试验和检测证明，制种田抽穗期九二○用量在每667 m 2 8～18 g范围内，其种子中的GA3含量在49.5～63.5 ng/g之间，均大大低于能引起幼苗徒长的GA3含量(946 ng/g)。可以认为，生产中杂交稻田产生的徒长苗与制种时...