【摘要】 以一系列不同浓度的GAs(Gibberellins,赤霉素)或STS(Silver Thiosulphate Complex,硫代硫酸银络合物)加乙烯利,在活体条件下,研究GAs和STS对乙烯利诱导瓠瓜产生雌花的拮抗作用.试验结果表明:STS和GAs几乎都能抵消乙烯利诱导瓠瓜产生雌花的作用.在一定的浓度范围(0～2.0mmol/L)内,乙烯利诱导雌花的效果是随着其浓度的增加而加强;当与GAs组合时,乙烯利诱导雌花的效应是随着GAs浓度(在0～4.0mmol/L范围内)的增加而减弱.STS抵消乙烯利的这种诱雌作用比GAs还要好,4.0mmol/L的STS几乎完全抵消了2.0mmol/L乙烯利的诱雌作用.更多还原

【Abstract】 Antagonistic effects of GAs ( gibberellins ) and STS ( silver t-hiosulphate complex ) on the induction of female flowers by ethephon (2-chloroethyl phosphonic acid) in Lagenaria leucantha Rusby were investigated, with the use of adding ethephon to GAs or STS solutions at a series of different concentrations. The results were as follows: Both GAs and STS were able to counteract the induction of the female flowers by ethephon. When ethephon was applied in combination with GAs, the effect of ethephon was diminished with an increase of GAs concentrations ranged from 0 to 4.0 mmol/1. Such an effect of ethephon was reversed by STS more effectively than GAs. A concentration of 4.0 mmol/1 of STS almost completely counteracted the effect of ethephon at 2.0 mmol/1.更多还原