钟花樱桃种子萌发研究

Study on Seed Germination of Cerasus campanulata

以广东粤东北地区野生钟花樱桃Cerasus campanulata种子为试材,研究了温水(25、40、60、80℃)浸泡、不同催芽方式(室外沙藏、室内盆栽沙藏、冷藏、水苔叠放)、赤霉素处理(0.5、1、2、3 g·L-1)和机械破壳处理对钟花樱桃种子萌发的影响。结果表明:(1)不同温度的水浸泡处理对钟花樱桃种子发芽率的影响差异极显著(P<0.01),发芽率为:40℃(71.6%)>25℃(41.2%)>60℃(33.4%)>80℃(6.2%);(2)不同贮藏条件对钟花樱桃种子发芽率的影响也存在极显著差异(P<0.01),苗圃沙藏的发芽率最高,发芽率为91.2%,且种子发芽时间提早了60 d;其次是室内盆栽沙藏,发芽率为80.8%,且种子发芽时间提早了120 d;(3)不同浓度赤霉素处理对钟花樱桃种子发芽率的影响差异极显著(P<0.01),在0.5 g·L-1浓度赤霉素处理下其发芽率最佳,发芽率达95.6%,且种子发芽时间提早了95 d。因此,钟花樱桃种子最佳的催芽方式为0.5 g·L-1浓度赤霉素浸泡24 h后进行沙藏。

In this work,The seeds of wild Cerasus campanulata in northeast Guangdong province were used as test materials,the effects of soaking in warm water(25℃,40℃,60℃,80℃),different germinating methods(nursery sand storage,indoor potted sand storage,cold storage,water moss stacking),Gibberellin Treatment(0.5,1,2,3 g·L-1)and mechanical shell breaking treatment on the seed germination of Cerasus campanulata were studied.The results show that:(1)There was significant difference in the germination rate of Cerasus campanulata seeds treated with different temperature water immersion(P<0.01),the germination rate was 40℃(71.6%)>25℃(41.2%)>60℃(33.4%)>80℃(6.2%);(2)The effects of different storage conditions on seed germination rate were also significantly different(P<0.01).The germination rate of outdoor sand was the highest,it was 91.2%,and the germination time was 60 days earlier;the second is indoor potted sand storage,the germination rate is 80.8%,and the seed germination time is 120 days earlier.(3)The effect of different concentrations of Gibberellin on the germination rate was very significant(P<0.01),the germination rate was the best under 0.5g·L-1 concentration of gibberellin,it was 95.6%,and the seed germination time was 95d earlier.The best way to accelerate the germination of Cerasus campanulata seeds was 0.5g·L-1 concentration of gibberellin soaked for 24h and sand storage.