多效唑在蔓性千斤拔上应用的初步研究

Preliminary study on the application of PP333 on Moghania philippinensis

关键词:  蔓性千斤拔  多效唑  叶绿素  叶面积  叶面积指数  药材产量

Key words:  Moghania philippinensis  PP₃₃₃  chlorophyll  leaf area  leaf area index  yield of medicinal materials

摘要:

为了解生长调节剂提高蔓性千斤拔产量的方法及机理,进行多效唑对蔓性千斤拔的化控试验。在蔓性千斤拔初花期,设30、60和90 株·m^-23个植株密度,用浓度为0、300、600、900 mg·L^-1的多效唑对蔓性千斤拔进行叶面喷施,测定叶绿素、叶面积、叶面积指数及药材产量。结果表明,植株密度为60株·m^-2、多效唑喷施浓度为600 mg·L^-1的处理,蔓性千斤拔叶绿素含量显著高于其它处理,叶面积和叶面积指数适度缩小,药材干重提高了16.7%。初步确定蔓性千斤拔增产效果最好的植株密度为60株·m^-2、多效唑喷施浓度为600 mg·L^-1。

Abstract:

This research aimed at understanding the improving method for production and the mechanism for growth regular of Moghania philippinensis. M.philippinensis were cultured in three density levels(30,60 and 90 individuals·m^-2),and at the early stage of flowering,each density levels of the plants were sprayed with 0,300,600 and 900 mg·L^-1 PP₃₃₃. The chlorophyll,leaf area,leaf area index and yield of medicinal materials were determined. The results showed that: under 60 individuals·m^-2 of planting density combined with 600 mg·L^-1 of PP₃₃₃,the chlorophyll content was significantly higher than that of others,leaf area and leaf area index were reduced moderately,dry weight of medicinal materials were increased 16.7%. The best combination for the yield increasing of M.philippinensis in the experiment was 60 individuals·m^-2 of planting density with 600 mg·L^-1 of PP₃₃₃.