对缺硼反应不同的油菜品种根系活力和酶活性的差异  

THE ROOT CHARACTER AND ENZYME ACTIVITY OF A BORON SENSITIVE AND NON-SENSITIVE OILSEED RAPE CULTIVAR

作　　者：曹享云[1] 刘武定[1] 皮美美[1] 杨玉华[1] 

机构地区：[1]华中农业大学微量元素研究室,武汉430070

出　　处：《中国油料》1997年第2期19-21,共3页

基　　金：国家自然科学基金;国家教委博士点基金

摘　　要：水培条件下，以典型的对缺硼敏感和不敏感甘蓝型油菜品种为供试材料进行研究。缺硼条件下，当地上部生长不受影响时，敏感品种根系生长明显受抑制，表现为根鲜重、根单位体积重量显著降低，地上部与地下部比例增加，根系总吸收面积、活跃吸收面积及比表面均明显下降，而不敏感品种上述参数无明显变化。缺硼时，敏感品种的G－6－PDHse、CAT活性显著下降，POD明显上升，不敏感品种上述三种酶活性变化不明显，SOD和MDA在硼处理间及品种间均无显著差异。This experiment was conducted under solution culture to study the differences on root activity and enzyme activity of the typical B-sensitive and non-sensitive rape (Brassica napus) cultivar. The results indicated that the root growth of the sensitive cultivarwas inhabited seriously by boron deficiency before the shoot was affected, showing a singnificant reduce of root weight and the weight per volume, and a obvious increment of shootroot ratio, but those of the non-sensitive one did not change much. Under boron deficient condition, the G-6-PDHse and CAT activity of the sensitive cultivar decreased and the POD increased noticeably, but those of the non-sensitive one were not altered. As far as SOD and MDA were concerned, no apparent difference was found between both B treatments and 2 cultivars.

关 键 词：油菜 甘蓝型油菜 缺硼 根系参数 酶活性 

分 类 号：S565.401[农业科学—作物学]