Comparison of the activity differences in two terminal oxidases between upland cotton and sea-island cotton | 陆地棉与海岛棉两个末端氧化酶差异的比较
2010
Hu Genhai, Henan Institute of Science and Technology, Xinxiang (China), School of Life Sciences | Wang Zhiwei, Henan Institute of Science and Technology, Xinxiang (China), School of Life Sciences | Zhang Jinbao, Henan Institute of Science and Technology, Xinxiang (China), School of Life Sciences
[Objective] This study was to reveal the differences in two terminal oxdiases, so as to provide theoretical basis for the selection of upland and sea-land hybrid materials. [Methods] Using 7 shares of upland cotton cultivars and 4 shares of sea-land cultivars as experimental materials, the change differences in AAO and PPO activities during whole growth period of the materials tested were studied. [Results] Two terminal oxdiases both in upland and sea-land cotton cultivars assumed similar change laws during whole growth period. AAO activity assumed a low―high trend, and there is a peak at the early stage. PPO activity presented two peaks, and that at the early stage was higher than at the late stage; the first peak is obviously higher than the second for sea-land cultivars, and two peaks are not remarkably different for upland cultivars. [Conclusion] The differences in AAO and PPO activities of sea-land and upland cotton cultivars observed on Jul. 4th and Aug. 6th, may provide guidance for the selection of upland and sea-land hybrids.
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