Effects of regulators on the respiratory enzyme of pear branches during dormant period
Effects of regulators on the respiratory enzyme of pear branches during dormant period
Lei BI1, Yuxing ZHANG1(), Bharat Kumar POUDYAL2, Xiaolei WU1, Jie LIU1
1. College of Horticulture, Agricultural University of Hebei, Baoding 071001, China; 2. Department of Agriculture, Fruit Development Directorate, Kirtipur, Kathmandu, Nepal
The effects of regulators on the respiratory enzymes of Qiyuesu’s pear branches during dormant period were studied. The results showed that enzyme activities of SDH, G-6-PDH and 6-PGDH were increased by 0.02 mmol/L SA and 120 mg/L GA3. The enzyme activities of phosphohexoisomerase were reduced by 0.02 mmol/L SA and 120 mg/L GA3. Compared with the control, the PGI activity was reduced by 20.5% and 13.6% using 0.02 mmol/L SA and 120 mg/L GA3. Similarly, the SDH activity was increased by 6.1% and 29.2%, respectively. Likewise, the activity of G-6-PDH and 6-PGDH was increased by 93.9% and 24.8%. Changes of respiratory enzymes were consistent with respiratory pathway of regulators, which indicated that SA and GA3 were helpful to break the dormancy by enhancing activities of SDH, G-6-PDH and 6-PGDH.
. Effects of regulators on the respiratory enzyme of pear branches during dormant period[J]. Frontiers of Agriculture in China, 2011, 5(4): 538-542.
Lei BI, Yuxing ZHANG, Bharat Kumar POUDYAL, Xiaolei WU, Jie LIU. Effects of regulators on the respiratory enzyme of pear branches during dormant period. Front Agric Chin, 2011, 5(4): 538-542.
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