烯效唑浸种对谷子种子萌发及幼苗生长的影响  

Effects of Soaking Millet Seeds with Uniconazole on Seed Germination and Seedling Growth

作　　者：鞠乐 陈培育 牛银亭 阴志刚 强学杰 余行简 郭腾飞 JU Le;CHEN Peiyu;NIU Yinting;YIN Zhigang;QIANG Xuejie;YU Xingjian;GUO Tengfei(Nanyang Academy of Agricultural Sciences,Nanyang 473000,China)

机构地区：[1]南阳市农业科学院,河南南阳473000

出　　处：《大麦与谷类科学》2023年第2期15-20,共6页Barley and Cereal Sciences

基　　金：财政厅/农业农村厅河南省农业良种攻关项目(2022010401);财政部/农业农村部国家现代农业产业技术体系专项资金项目(nycytx-CARS-06)。

摘　　要：以宛谷2号为供试材料,采用不同的浸种时间(12、24 h)与烯效唑浸种浓度(0、10、20、30、40、50 mg/L),进行浸种处理和发芽试验,测定种子发芽势、芽长、芽鞘长、根长、根数、芽干质量、根干质量等指标,明确烯效唑浸种对谷子种子萌发及幼苗生长的影响。研究表明:1)烯效唑浸种后种子发芽势降低;2)浸种时间对谷子发芽势、根数、芽长、芽干质量、根冠比及物质转运速率指标的影响有统计学意义或高度统计学意义,对根长、芽鞘长、根干质量的影响无统计学意义;烯效唑浓度对发芽势、根长、芽鞘长、芽长、根干质量、芽干质量、物质转运速率的影响有统计学意义或高度统计学意义,对根数、根冠比指标的影响无统计学意义;同一浸种时间条件下,烯效唑浓度增加,对谷子幼苗生长具有显著的抑制作用,发芽势、根长、芽鞘长、芽长、根干质量、芽干质量、物质转运速率均呈下降趋势;3)芽长、根干质量、物质转运速率、芽鞘长、根长、发芽势及芽干质量间及其与对烯效唑敏感性间存在极显著正相关关系,芽长、根干质量、物质转运速率可作为谷子种子萌发期对烯效唑敏感性的鉴定指标。The present study was undertaken to assess the effects of soaking millet seeds with uniconazole on seed germination and seedling growth,using the millet variety Wangu No.2 as the experimental material.Different lengths of soaking time(12,24 h)and concentrations of uniconazole(0,10,20,30,40,50 mg/L)were set for the germination experiment,in which germination potential,bud length,bud sheath length,root length,root number,bud dry weight,and root dry weight were measured.The results are as follows.Firstly,seed germination potential decreased after seeds were treated with uniconazole.Secondly,soaking time with uniconazole produced statistically significant or even very significant effects on germination potential,root number,shoot length,dry weight of shoots,root-shoot ratio,and the rate of material transport,while it had no statistically significant effect on root length,sheath length,and dry weight of roots of millet seedlings.Under the condition of the same length of soaking time with uniconazole,increasing its concentration significantly inhibited the growth of millet seedlings,shown by a downward trend of germination potential,root length,shoot sheath length,shoot length,dry weight of roots,dry weight of shoots,and material transport rate.Thirdly,shoot length,dry weight of roots,material transport rate,shoot sheath length,root length,germination potential,and dry weight of shoots were all positively correlated with the sensitivity of millet seeds to uniconazole in the germination stage.Thus,shoot length,dry weight of roots,and material transport rate can be used as indicators of the sensitivity of millet germplasm to uniconazole in the germination stage.

关 键 词：植物生长调节剂 谷子 萌发 隶属函数法 

分 类 号：S515[农业科学—作物学]