Cr胁迫对茄子种子发芽和幼苗生长的影响

Effect of Chromium Stress on Germination and Seeding Growth of Eggplant

探究Cr胁迫对茄子种子发芽和幼苗生长的作用。采用浓度分别为5、10、20、40 mg/L的铬溶液浸泡茄子种子,测定铬胁迫对茄子种子发芽和幼苗生长的影响。结果表明:当铬溶液5 mg/L时,低浓度的铬溶液对茄子种子和幼苗生长没有影响。随着铬浓度的增大,逐渐表现为抑制作用,且随铬溶液浓度的增大,抑制作用增强,当铬浓度增至20 mg/L以上时,茄子种子的发芽率下降,差异显著;当铬浓度40 mg/L时,对幼根的抑制作用显著,同时活力指数显著下降,而活力指数下降说明随铬浓度的增大茄子种子品质趋劣。高浓度的铬溶液对茄子的发芽势影响不明显。结果表明:不同浓度的铬溶液对茄子种子和幼苗生长产生的影响不同,低浓度的铬对茄子种子萌发和幼苗生长没有影响,高浓度的铬对茄子种子发芽率、活力指数和幼根生长产生显著影响,而对发芽势影响不明显。

Effect of chromium stress on germination and seeding growth of eggplant was investigated.Chromium-containing solution with concentrations of 5,10,20,40 mg/L were used to soak the seeds of eggplant in the trial,followed by the determination of effect of chromium stress on germination and seeding growth of eggplant.The result indicated that： Chromium-containing solution with a concentration of 5 mg/L had no effect on the seed and seeding growth of eggplant;as the increase of chromium concentration,the seeding growth of eggplant became inhibited,and the inhibition enhanced as the increase of chromium concentration;when the concentration of chromium reached 20 mg/L,the percentage of germination decreased,and the difference was significance;when the concentration of chromium was 40 mg/L,inhibition on the radicle was significance,at the same time,the vitality index decreased significance,this suggested the quality of seed decrease as the increase of chromium concentration;high chromium concentration solution did not show significance influence on the germinability and germination index.