首页|豆蔻酸对茄子幼苗生长和叶片防御酶活性的影响

豆蔻酸对茄子幼苗生长和叶片防御酶活性的影响

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采用模拟结合田间试验的方法,研究不同浓度豆蔻酸对茄子幼苗生长及叶片防御酶活性的影响.结果表明,在豆蔻酸浓度为0.05~1 mmo1·L-1时,随浓度的增加,豆蔻酸对茄子幼苗生长指标、叶绿素含量、根系活力的促进作用逐渐增加,在1 mmol·L-1时促进作用最大,而后随着浓度增大,又表现出抑制作用.适宜浓度的豆蔻酸对丙二醛(MDA)含量和相对电导率起到抑制作用,并随浓度增加作用强度增大.当浓度增至1 mmol·L-1时,表现的抑制作用最强;在0.05~1 mmol·L-1时,豆蔻酸对叶片防御酶CAT、POD、PPO和PAL活性均表现促进作用,且在1 mmol·L-1的促进作用最大.豆蔻酸在某种程度上促进茄子幼苗的生长并提高叶片防御酶的活性.
Effects of Tetradecanoic Acid on Growth and Activities of Leaf Defense Enzymes of Eggplant Seedlings
Effects of the tetradecanoic acid with different concentrations on growth and activities of leaf defense enzymes of eggplant seedlings were studied in laboratory and field experiment by a simulation way.The results showed that with the increasing of tetradecanoic acid concentrations (0.05-1 mmol· L-1), the growth of eggplant seedlings, leaf chlorophyll content and root vigor could be promoted, and the best effect presented in 1 mmol·L-1 treatment.While the MDA content and relative electricity conductivity were inhibited by tetradecanoic acid at a low concentration, and the inhibitory rates were enhanced with the increasing concentration.Up to 1 mmol·L-1 , tetradecanoic acid presented the strongest inhibition.With the increasing of tetradecanoic acid concentrations (0.05-1 mmol·L-1), activities of CAT, POD, PPO and PAL could be promoted, and the best effect presented in 1 mmol·L-1 treatment.the tetradecanoic acid can enhance the seedling growth of eggplants and promote activities of membrance defense enzymes in eggplant seedlings.

周宝利、武建霞、尹玉玲、韩琳、孙传奇

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沈阳农业大学园艺学院,沈阳110161

豆蔻酸 茄子 幼苗生长 防御酶活性

国家科技支撑计划辽宁省教育厅高等学校创新团队项目

2008BADA6B022009T087

2011

西北农业学报
西北农林科技大学,甘肃,宁夏,青海,新疆农(林)业科学院及青海,新疆畜牧(兽医)科学院及新疆农垦科学院

西北农业学报

CSTPCDCSCD北大核心
影响因子:0.629
ISSN:1004-1389
年,卷(期):2011.20(4)
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