吲哚乙酸, 激动素或赤霉酸的外源施用刺激了光合作用.Exogenous applications of indoleacetic acid, kinetin or gibberellic acid stimulate photosynthesis.赤霉酸也可加强雄性的倾向.Gibberellic acid may also accentuate the trend toward maleness.赤霉''.'...