摘要
在溶液培养条件下,选用甘蓝型油菜硼高效和硼低效品种,研究硼对细胞壁酶活性的影响。结果表明,不同生育期缺硼均使油菜根系细胞壁过氧化物酶(POD) 活性显著升高;上部叶片细胞壁POD 活性显著下降;下部叶片处理间的差异不显著,但同一生育期细胞壁POD 活性硼高效品种显著高于硼低效品种。油菜根系细胞壁IAA 氧化酶活性,缺硼时两品种薹期和花期显著升高,苗期差异不显著;上部叶片细胞壁IAA 氧化酶活性缺硼时显著降低,硼高效品种花期差异不显著;缺硼对下部叶片细胞壁IAA 氧化酶活性影响不大,但低效品种花期该酶活性显著降低。
Under the condition of solution culture, the effect of boron on the cell walll POD(peroxidase) activity and IAA(indole 3 acetic acid) oxydase activity of a typical B effecient and a B?ineffecient rape( brassica napus L.) cultivars were studied. The results showed that the activity of cell?wall POD significantly increased in root and significantly decreased in upper leaf of the two cultivars when B was removed from the solution at seedling, bolting and flowering stages. B starvation at the three stages had little effect on the cell?wall POD activity in lower leaf, but the activity of the emzyme in lower leaf was greatly higher in B?effecient cultivar than that in B?ineffecient cultivar. Under B deficient condition, the activity of cell?wall IAA oxydase significantly increased in root at bolting and flowering stages but increased at seedling stage insignificantly. The activity of the enzyme significantly decreased in upper leaf, except that at flowering stage, the enzyme activity changed insignificantly in B?effecient cultivar. B deficiency had no obvious effect on the enzyme activity in lower leaf, except that at flowering stage, the enzyme activity decreased significantly in the B?ineffecient cultivar.
出处
《植物营养与肥料学报》
CAS
CSCD
1999年第4期341-346,共6页
Journal of Plant Nutrition and Fertilizers
基金
国家自然科学基金
关键词
甘蓝型油菜
细胞壁
过氧化物酶
硼
rape( Brassica napus L.)
cell wall
POD
IAA oxydase
