CAJ | 학술논문

以3种决明属种子为材料，研究了不同质量分数的PEG-6000胁迫对其种子萌发的影响，并对其抗旱性进行评价。结果表明：干旱对3种决明属种子的萌发有显著影响；不同质量分数的干旱胁迫对该属种子的相对发芽率、相对发芽势、相对发芽指数、相对活力指数、相对苗长和相对苗重均存在抑制作用；低质量分数的PEG-6000干旱胁迫对相对根长具有一定的促进作用，而高质量分数会抑制幼苗的相对根长。通过隶属函数法综合评价认为，3种决明属种子的抗旱性顺序为草决明＞望江南＞伞房决明。
이3충결명속충자위재료，연구료불동질량분수적PEG-6000협박대기충자맹발적영향，병대기항한성진행평개。결과표명：간한대3충결명속충자적맹발유현저영향；불동질량분수적간한협박대해속충자적상대발아솔、상대발아세、상대발아지수、상대활력지수、상대묘장화상대묘중균존재억제작용；저질량분수적PEG-6000간한협박대상대근장구유일정적촉진작용，이고질량분수회억제유묘적상대근장。통과대속함수법종합평개인위，3충결명속충자적항한성순서위초결명＞망강남＞산방결명。
Controlled experiments were conducted to investigate the effect of drought stress by different concentrations of PEG-6000 on seeds germination of 3 species of Cassia.The results showed that the relative germination rate, relative germination vigor, relative germination index, relative vigor index, relative seedling length and relative seedling weight of Cassia all decreased significantly with the increase of PEG-6000 concen-tration.Low concentrations of PEG promoted relative root length,but high concentrations of PEG restrained rel-ative root length.According to the evaluation of the above seven indicators with subordinate function, the drought-resistance sequence of the 3 species of Cassia from high to low was:Catsia tora Linn>Cassia occiden-talis>Cassia corymbosa.