B_9对花生幼苗过氧化物酶活性的影响

花生幼苗三叶期用1000PPmB_9溶液喷施叶片.处理后,每隔二天测定茎尖、成长叶和根的过氧化物酶的活性以及主茎高度,结果表明:1.在正常情况下,花生幼苗不同器官的过氧化物酶的活性大小依次为:根>成长叶>茎尖;而且此酶活性随着植株年龄的增大而逐步升高.2.B_9明显提高了花生茎尖过氧化物酶的活性,而对根和叶的过氧化物酶的活性似乎没有影响.3.B_9明显抑制花生幼苗主茎伸长.

EFFECT OF B_9 ON THE ACTIVITY OF PEROXIDASE IN PEANUT SEEDLINGS

The peanut seedlings ( ov. Yueyou 551) were sprayed with 1000 p.p. m B9 solution at the three-leaf stage. After the treatment, the length of the main stem was measured and the activity of peroxidase in root, leaf and the tip of the main stem determined at intervals of one day.The results obtained were as follows: 1. In normal conditions, the activity of the peroxidase in different organs was: root>leaf>tip of the main stem in sequence. The older the seedlings grew, the higher the peroxidase activity became. 2. B9 remarkably increased the peroxidase activity in the tip of the main stem; however, there was not any effection the rootandthe leaf. 3. B9 obviously inhibited the elongation of the tip of the main stem. in peanut seedlings.