| PP333对香椿种子发芽和幼苗生长的影响 |
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| 引用本文： | 王志杰,郑均宝,张月娴.PP333对香椿种子发芽和幼苗生长的影响[J].河北林果研究,1995(3). |
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| 作者姓名： | 王志杰 郑均宝 张月娴 |
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| 作者单位： | 河北林学院基础部，天津市农林局 |
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| 摘 要： | 叙述了用不同浓度ＰＰ３３３浸泡香椿种子对发芽率、发芽势、发芽时间、上胚轴伸长、幼根生长及培养２４ｄ幼苗干重等的影响。并测定了发芽种子的呼吸强度，还原糖、脂肪含量及脂酶活性、叶绿素含量等的生理效应。试验证明，低浓度（１０ｍｇ／Ｌ）ＰＰ３３３可明显抑制下胚轴的伸长，而促进幼根生长，但对幼苗干重影响不大，且对生理活性的抑制作用也不明显。需进一步研究对香椿矮化的效果。
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| 关 键 词： | 香椿，多效唑（PP333），种子发芽，生理效应 |
EFFECTS OF PP333 ON SEED GERMINATION AND PLANTLET GROWTH OF CHINESE TOONA |
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| Wang Zhijie ,Zheng Junbao, ZhangYuexian.EFFECTS OF PP333 ON SEED GERMINATION AND PLANTLET GROWTH OF CHINESE TOONA[J].Hebei Journal of Forestry and Orchard Research,1995(3). |
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| Authors: | Wang Zhijie Zheng Junbao ZhangYuexian |
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| Abstract: | Chinese toona seeds were soaked in PP333 solutions with various concentrations.And its effects on germination rate,germination energy, germination time, growth ofepicotyls and the growth of radicles,together with the dry weight of young plantlets after 24days of cultivation were investigated.Meanwhile,some other effects on respiration rate ofgerminated seeds,content of reducing sugar and fat,lipolytic enzyme activity,and chlorophyllcontent were measured.The research showed that low concentration of PP333( 10mg / L)could effectively inhibit the elongation of hypocotyls,but could stimulate the growth of radi- cals.It was also found that PP333 treatment had no significant influence on the dry weight ofplantlet,and on the inhibition of physiological activity.Moreover,the effect of PP333 ondwarfingof Chinese toona need to be further studied. |
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| Keywords: | Chinese toona PP333 seed germination physiological effect |
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