CAJ | 학술논문

本试验采用水培法，以金皇后品种的紫花苜蓿为材料，探讨了酸（pH 3．0，4．5，6．0，7．5）、Al3＋（0，50，100，200 mg／L）胁迫处理对苜蓿种子发芽和幼苗生长的影响。结果表明，随着酸度的增加对苜蓿种子发芽和幼苗生长的抑制作用增强，微酸（pH 6．0）环境下几乎没有抑制作用，甚至有促进作用。溶液铝含量在0，50 mg／L 时，苜蓿生长正常，发芽率、发芽势、发芽指数、茎长、根长等均明显高于其他处理（P ＜0．05）；当铝含量在100～200 mg／L 时，苜蓿种子发芽和幼苗生长受到严重抑制，发芽率、发芽势、发芽指数、茎长、根长等均显著低于（P ＜0．05）其他处理。酸、铝共同胁迫对苜蓿种子发芽和幼苗生长的影响大于单一胁迫对它的影响，当 pH＜4．5、Al3＋浓度达到50 mg／L 以上时，即可对苜蓿芽苗的生长产生明显的抑制作用。
본시험채용수배법，이금황후품충적자화목숙위재료，탐토료산（pH 3．0，4．5，6．0，7．5）、Al3＋（0，50，100，200 mg／L）협박처리대목숙충자발아화유묘생장적영향。결과표명，수착산도적증가대목숙충자발아화유묘생장적억제작용증강，미산（pH 6．0）배경하궤호몰유억제작용，심지유촉진작용。용액려함량재0，50 mg／L 시，목숙생장정상，발아솔、발아세、발아지수、경장、근장등균명현고우기타처리（P ＜0．05）；당려함량재100～200 mg／L 시，목숙충자발아화유묘생장수도엄중억제，발아솔、발아세、발아지수、경장、근장등균현저저우（P ＜0．05）기타처리。산、려공동협박대목숙충자발아화유묘생장적영향대우단일협박대타적영향，당 pH＜4．5、Al3＋농도체도50 mg／L 이상시，즉가대목숙아묘적생장산생명현적억제작용。
Alfalfa seeds (cv.Golden empress)were treated with acidic (pH 3.0,4.5,6.0,7.5)and aluminum (0,50,100,200 mg/L Al3 + )solutions to study the effects of pH and Al3 + stresses on seed germination and seedling growth.The results showed that acidity significantly inhibited germination and seedling growth of al-falfa;lower pH had a greater effect than higher pH.Germination rate,germination potential,germination in-dex,stem length and root length of untreated seeds (control)and seeds treated with 50 mg/L Al3 + were signif-icantly higher (P <0.05)than all other treatments.Germination and seedling growth were seriously reduced by higher Al3 + treatments (100 mg/L or 200 mg/L)which resulted in a significant decrease in the growth index (P <0.05).The combination of acidity and aluminum stress on germination and seedling growth of alfalfa were greater than those of either stress in isolation.Even the treatment of pH<4.5 and Al3 + >50 mg/L had a sig-nificant negative effect on seed germination and growth.