CAJ | 학술논문

为了探讨水杨酸对冬季茶树抗寒性的调控机制,以"龙井43号"茶树为试材,研究休眠期叶面喷施水杨酸对茶树叶片光合作用、叶片中碳水化合物含量和活性氧代谢的影响,结果表明,叶面喷施水杨酸30天后即能明显提高茶树叶片净光合速率,处理60天后,2 mmol/L的水杨酸处理显著提高了叶片中可溶性总糖和淀粉含量、使丙二醛、活性氧含量显著下降,同时,叶片中脯氨酸含量、超氧化物歧化酶、过氧化氢酶和过氧化物酶活性显著升高,其它水杨酸处理虽然也能提高这些酶活性,但是效果不如2mmol/L的水杨酸处理显著.因此,在休眠期,叶面喷施适当浓度的水杨酸可显著提高茶树叶片的Pn和保护酶活性,从而提高茶树的抗寒性,这也有利于提高次年茶叶的产量与品质.
위료탐토수양산대동계다수항한성적조공궤제,이"룡정43호"다수위시재,연구휴면기협면분시수양산대다수협편광합작용、협편중탄수화합물함량화활성양대사적영향,결과표명,협면분시수양산30천후즉능명현제고다수협편정광합속솔,처리60천후,2 mmol/L적수양산처리현저제고료협편중가용성총당화정분함량、사병이철、활성양함량현저하강,동시,협편중포안산함량、초양화물기화매、과양화경매화과양화물매활성현저승고,기타수양산처리수연야능제고저사매활성,단시효과불여2mmol/L적수양산처리현저.인차,재휴면기,협면분시괄당농도적수양산가현저제고다수협편적Pn화보호매활성,종이제고다수적항한성,저야유리우제고차년다협적산량여품질.
This paper aims to find out the regulator metabolism of salicylic acid on cold resistance in dormancy of tea tree. Effects of difference concentration of salicylic acid on photosynthesis, carbohydrate content and me-tabolism of reactive oxygen species in Longjing43 were studies. Results showed that net photosynthesis rates were obviously increased in 30th day after sprayed salicylic acid to tea foliar in dormancy. 2 mmol/L salicylic acid significantly increased total soluble sugar, starch contents, and significantly decreased foliar reactive oxy-gen species and MDA contents in 60th day after treatment. At the same time, the proline content, SOD, CAT and POD activities were significantly increased. Others concentration of salicylic acid also improved photosyn-thesis and protective enzymes activities, but the results were not as better as 2 mmol/L salicylic acid. It is con-cluded that foliar sprayed of suitable concentration of salicylic acid in tea tree's dormancy can improve photo-synthesis and protective enzymes activities, and increase the cold resistant, in the end, the tea yield and quality in the next year could improve.