2种植物免疫诱抗剂对蔬菜种子萌发行为的试验研究

摘要：为明确植物免疫诱抗剂对种子萌发行为的影响,采用纸上法,设置不同浓度的0.5%几丁聚糖和1%香菇多糖,对番茄、黄瓜、辣椒、茄子种子发芽率、发芽势、发芽指数进行测定。结果表明：2种植物免疫诱抗剂对番茄、黄瓜、辣椒、茄子种子萌发均具有较好的促进效果,其中,1%香菇多糖对番茄、黄瓜和茄子种子萌发的效果优于0.5%几丁聚糖,1%香菇多糖800倍液处理的番茄和茄子的发芽率、发芽势和发芽指数3项指标均最高,分别为92.64%、75.06%、9.47和87.64%、72.24%和9.56,分别较对照组提高10.14百分点、11.78百分点、2.96和24.66百分点、20.06百分点、3.87;1%香菇多糖600倍液处理的黄瓜发芽率、发芽指数均最高,分别为95.15%、11.85,1%香菇多糖800倍液处理的黄瓜发芽势最高,为70.23%;0.5%几丁聚糖600倍液处理的辣椒发芽率、发芽势均最高,分别为99.12%、67.26,1%香菇多糖400倍液处理的辣椒发芽指数最高,为9.45。在田间育苗时,根据不同作物选择适宜浓度的植物免疫诱抗剂并随水施用,可促进种子萌发。

Study on Seed Germination Behavior of Two Kinds of Plant Immune Inducers

Abstract: In order to clarify the effect of plant immune inducers on seed germination behavior, the paper method was used, and the germination rate, germination potential and germination index of tomato, cucumber, pepper and eggplant seeds with different concentrations of 0.5% chitosan and 1% lentinan were measured. The results showed that two plant immune inducers had good promoting effects on the germination of tomato, cucumber, pepper and eggplant seeds. Among them, 1% lentinan had a better effect on the germination of tomato, cucumber and eggplant seeds than 0.5% chitosan. The tomato and eggplant treated with 1% lentinan 800 times solution had the highest germination rate, germination potential and germination index of 92.64%, 75.06%, 9.47 and 87.64%, 72.24%, 9.56, respectively, whichincreased by 10.14 percentage points, 11.78 percentage points, 2.96 and 24.66 percentage points, 20.06 percentage points, 3.87, respectively, compared with the control group. The germination rate and germination index of cucumber treated with 1% lentinan 600 times solution were the highest with 95.15% and 11.85, respectively. The cucumber treated with 1% lentinan 800 times solution had the highest germination potential of 70.23%. The pepper treated with 0.5% chitosan 600 times solution had the highest germination rate and germination potential of 99.12% and 67.26, respectively. The pepper treated with 1% lentinan 400 times solution had the highest germination index of 9.45. When raising seedlings in the field, selecting appropriate concentrations of plant immune inducers based on different crops and applying them with watering could promote germination of seed.