黄花刺茄浸提液对番茄种子萌发及幼苗生长的影响

为明确入侵植物黄花刺茄对当地主栽经济作物番茄种子萌发和幼苗生长的影响,本文采用培养皿滤纸法,在智能光照培养箱的变温控制条件下,分别研究了黄花刺茄根、茎、叶浸提液对番茄种子发芽率、发芽指数及幼苗根长和苗高的影响。结果表明:(1)黄花刺茄不同器官的浸提液对番茄种子发芽率、发芽指数、幼苗根长和苗高的影响不同,其茎、叶浸提液的化感作用较为显著(P<0.01)。(2)黄花刺茄同部位浸提液对番茄种子发芽率、发芽指数、幼苗根长和苗高不同指标的影响也不同。根浸提液对种子发芽率、幼苗根长影响不显著(P>0.05),但对种子发芽指数的影响极显著(P<0.01)。茎和叶浸提液各浓度对种子发芽指数的影响比种子发芽率、幼苗根长和苗高的影响显著(P<0.01)。

Effects of Solanum rostratum on seed germination and seedling growth of tomato

Solanum rostratum is a invasive weed,while tomato is a main local cultivated crop.We used the filter paper method in petri dish under variable temperature in illumination box to study the effects of the root, stem and leaf extract of Solanum rostratum on seed germination rate,germination speed,root length and seedling height of tomato.The results showed that:(1) The extract of different organs of Solanum rostratum had different effects on seed germination rate,germination speed,root length and seedling height of tomato,among which the allelopathy effects of the extract of stem and leaf were more significant(P<0.01).(2) The extract of the same organ of Solanum rostratum had different effects on seed germination rate,germination speed,root length and seeding height of tomato.The effect of root extract was not significant (P>0.05) for the seed germination rate and root length of tomato,but the effect was more significant on germination speed(P<0.01).The effect of the extract of stem and leaf of Solanum rostratum on germination speed was the most significant(P<0.01).