化学物质对野生茄子托鲁巴姆种子萌发的影响

试验用浓度为500～2000mg/L的赤霉素（GA3）、0.5%～5.0%的KNO3、0.1%～1.0%的NaNO3和20%～30%的PEG对托鲁巴姆种子进行不同时间浸种处理,以研究其对种子萌发的影响,结果表明：500～2000mg/L GA3浸种处理对托鲁巴姆种子的萌发有极显著的促进作用,随着GA3处理浓度的升高,托鲁巴姆种子的发芽率、发芽势、发芽指数显著提高,其中以1000～2000mg/L GA3浸种36h的处理效果最佳,种子发芽率、发芽指数和发芽势比对照提高了27.39%～69.27%、195.33%～234.70%、1662.50%～1493.75%,与对照差异达极显著水平。处理后的托鲁巴姆种子9d即可完成萌发,而对照需14d,大大缩短了催芽时间,发芽也较整齐,是参试处理中较好的类型。PEG在低浓度下（20%）对托鲁巴姆种子萌发的促进作用最大,与对照差异均达显著水平,随着处理浓度的升高促进作用开始下降,PEG浓度达到40%时抑制托鲁巴姆种子的萌发。0.5%的低浓度KNO3处理能促进托鲁巴姆种子的萌发,种子发芽率、发芽指数和发芽势比对照提高了53.63%、77.56%和185.71%,且差异达极显著水平。而随着KNO3溶液浓度的增加,种子发芽率、发芽指数和发芽势均有不同程度的降低,达到高浓度后表现出抑制作用。NaNO3溶液浸种处理对其发芽势、发芽率和发芽指数没有明显的影响。

Effect of Chemical Substances on Seed Germination of Wild Eggplant Tolubamu

The experiment was mainly observed and compared on the effect of different chemical priming treatments and soaking time to the Solanum Torvum seed germination,used 500~2000mg/L GA3,0.5%~5.0% KNO3,0.1%~1.0% NaNO3 and 20%~30%PEG as chemical priming solution,The results showed that： the priming treatment of 500mg/L~2000mg/L GA3 significantly enhanced the germination of the Solanum Torvum seeds and the germination rate,the germination.energy and the germination index significantly increased with the increase of the concent ration of GA3,among which 1000mg/L～2000mg/L GA3 soaking 36h was the optimal treatment and the germination rate,the germination energy and the germination index were significantly increased by 27.39%~69.27%、195.33%~234.70%、1662.50%~1493.75% respectively,compared to the control.After treatment with 1000～2000mg/L GA3 soaking 36h,the Solanum Torvum seeds completed germination only requires 9 days,greatly shortened the germination time,the germination energy were significantly higher than those in control which completed germination needs 14 days.20% PEG has significantly promoting effect on the germination of Solanum Torvum seeds,but the germination effect significantly reduced by the increase of the concent of PEG,the germination rate,the germination index and the germination energy significantly decreased by 10.87%,19.06% and 57.25% treatmented with 40% PEG.The germination capacity of Solanum Torvum seeds promoted by 0.5%KNO3 priming solution treatments and the germination rate,the germination index and the germination energy significantly increased by 53.63%,77.56% and 185.71% respectively,compared to the control.The germination capacity of Solanum Torvum seeds inhibited by higher concentration of KNO3 priming solution treatments and significantly decreased with the increase of the concent ration of KNO3.NaNO3 priming solution treatments has no influenced on the germination rate,the germination index and the germination energy.