作　　者： ; ; ; ; ;

机构地区： 佛山科学技术学院生命科学学院园艺系

出　　处： 《华中农业大学学报》 2010年第1期45-47,共3页

摘　　要： 以不同浓度Al3+处理豌豆幼根根尖,24 h后通过测定幼根的相对伸长率、不同根段的胼胝质含量、POD活性同时结合苏木精染色,探讨不同浓度Al3+对豌豆根尖生长的影响。结果表明:幼根伸长明显受到抑制,苏木精染色的颜色也随Al3+浓度上升而加深;不同根段的胼胝质含量明显增加,当Al3+浓度大于50μmol/L后,差异达到显著;幼根的POD活性显著降低。说明Al3+抑制豌豆幼根的生长,其敏感浓度为50μmol/L。 Influences of different concentration of Al^3＋ on the roots of pea （Pisum sativum） were studied by determining root elongnation,callose production,activity of peroxide（POD） and hematoxylin stain of root apices after treated by Al^3＋ for 24 h. The results showed that root elongation was obviously inhibited and activity of POD decreased with the increase of Al^3＋ concentration. Callose content increased with the increase of Al^3＋ concentration and significantly increased at Al^3＋ concentration over 50 μmol/L accompanied with heavy hematoxylin stain. These results indicated that Al^3＋ inhibited root growth and the sensitive concentration of Al^3＋ to root tip of pea is 50μmol/L.

关 键 词： 豌豆 根尖 胼胝质 过氧化物酶

领　　域： [生物学]