摘要
研究了不同浓度的茉莉酸甲酯(MeJA)对蒙古扁桃木质素、晶细胞及水势的诱导作用及其时间效应,探讨了外源茉莉酸甲酯是否对蒙古扁桃产生诱导防御反应。结果表明:茉莉酸甲酯处理使蒙古扁桃叶片木质素含量增加,中脉周围的晶细胞数量增多,水势下降。3种浓度MeJA处理蒙古扁桃,叶片木质素含量均于第3天增幅最大,至第5天木质素含量与对照组无差异;0.10mmol/L MeJA处理效果显著高于其它2种浓度处理效果(P<0.05)。3种浓度MeJA处理蒙古扁桃1d后,叶片水势显著低于对照(P<0.05);处理3、5d后,叶片水势先升高后降低,水势均低于对照,但差异不显著(P>0.05)。3种MeJA处理的蒙古扁桃,叶中脉周围晶细胞数量显著高于对照组。
The inductive and time effect of different concentrations of MeJA on the lignin contents, the crystal cell number and water potential of Prunus rnongolica leaves were studied,to find out whether MeJA have defence reaction on Prumts mongolica. The results showed that the lignin contents and the crystal cell number increased significantly after MeJA treatment, but water potential decreased remarkably. The lignin contents reached the maximum on the 3th day, and it had no difference with CK after treated by 3 concentrations of MeJA; the effect of 0. 10 mmol/L MeJA treatment had more significart difference than the others （P〈0. 05）. MeJA treatment obviously decreased water potential of the leaves than CK （P〈0. 05） after treated by 3 concentrations of MeJA for 1 day; water potential first increased and then decreased after treated 3 and 5 days, which was lower than CK, but had no significant difference （P 〉 0. 05）. The crystal cell number of Prunus rnongolica leaves was obviously higher than CK after treated by 3 concentrations of MeJA.
出处
《北方园艺》
CAS
北大核心
2013年第2期155-158,共4页
Northern Horticulture
基金
内蒙古自治区高等学校科学研究资助项目(NJ10168)
关键词
蒙古扁桃
茉莉酸甲酯
木质素
晶细胞
水势
Prunus mongolica
methyl jasmonate （MeJ A）
lignin
crystal cells
water potential
