园艺与种苗
園藝與種苗
완예여충묘
Rain Fed Crops
2014年
8期
1-3
,共3页
生菜种子%Cr6+胁迫%萌发%苗长%根长
生菜種子%Cr6+脅迫%萌髮%苗長%根長
생채충자%Cr6+협박%맹발%묘장%근장
Lettuce seeds%Cr6+stress%Seed germination%Seedling height%Root length
[目的]探讨低浓度Cr6+对生菜种子萌发及幼苗生长的影响。[方法]采用0、5、10、20、30、40 mg/L的Cr6+溶液进行生菜种子发芽试验。[结果]Cr6+对生菜种子的发芽势和发芽指数影响不大、对发芽率影响极显著；活力指数随Cr6+浓度的增加而下降，Cr6+为20 mg/L影响显著，为40 mg/L影响极显著；Cr6+显著抑制苗长和根长，浓度越高影响越大；Cr6+≥5 mg/L显著降低生菜种子的成苗率。[结论]在该研究浓度下，不利于生菜种子的萌发和幼苗的生长。
[目的]探討低濃度Cr6+對生菜種子萌髮及幼苗生長的影響。[方法]採用0、5、10、20、30、40 mg/L的Cr6+溶液進行生菜種子髮芽試驗。[結果]Cr6+對生菜種子的髮芽勢和髮芽指數影響不大、對髮芽率影響極顯著；活力指數隨Cr6+濃度的增加而下降，Cr6+為20 mg/L影響顯著，為40 mg/L影響極顯著；Cr6+顯著抑製苗長和根長，濃度越高影響越大；Cr6+≥5 mg/L顯著降低生菜種子的成苗率。[結論]在該研究濃度下，不利于生菜種子的萌髮和幼苗的生長。
[목적]탐토저농도Cr6+대생채충자맹발급유묘생장적영향。[방법]채용0、5、10、20、30、40 mg/L적Cr6+용액진행생채충자발아시험。[결과]Cr6+대생채충자적발아세화발아지수영향불대、대발아솔영향겁현저；활력지수수Cr6+농도적증가이하강，Cr6+위20 mg/L영향현저，위40 mg/L영향겁현저；Cr6+현저억제묘장화근장，농도월고영향월대；Cr6+≥5 mg/L현저강저생채충자적성묘솔。[결론]재해연구농도하，불리우생채충자적맹발화유묘적생장。
Objective] The aim was to discuss the seed germination and seedling growth under the low concentrations of Cr6+. [Method] An experiment of seed germination was conducted under the Cr6+concentration to be 0, 5, 10, 20, 30 and 40 mg/L. [Result] The change of Cr6+concentration had no significant effect on the germination potential and germination index of lettuce seeds, but it could significantly influence the germination rate of lettuce seeds;the vigor index of seed germination was significantly correlated with the Cr 6+concentration, and which was declined with the increase of Cr6+concentration;the Cr6+stress on the seedling height and root length of lettuce was significantly increased with the increase of Cr6+concentration;the Cr6+was significantly influenced the survival rate of lettuce seedlings when its concentration was≥5 mg/L. [Conclusion] Cr6+with the content of 5~40 mg/L was disadvantage to the germination of lettuce seeds and seedling growth.
