二甲四氯钠对水稻挥发物释放的影响  

Effects of MCPA-Na on the volatiles from rice plants

作　　者：卢海燕[1] 张青[1] 祝树德[1] 刘芳[1] 

机构地区：[1]扬州大学园艺与植物保护学院,江苏扬州225009

出　　处：《扬州大学学报（农业与生命科学版）》2010年第1期81-85,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金："十一五"国家科技支撑计划项目(2006BAD02A03);国家自然科学基金资助项目(30500329)

摘　　要：在盆栽条件下,研究施用二甲四氯钠对水稻挥发物释放的影响。利用固相微萃取法收集水稻挥发物,并通过气相色谱-质谱联用仪对其进行分离和鉴定,共收集到24种水稻挥发物组分,其中已定性的8种,以倍半萜类化合物(7种)为主。在已定性的组分中,异喇叭烯、(-)-α-雪松烯、(+)-β-雪松烯、雪松醇4种组分在水稻上属首次报道。不同处理收集的水稻挥发物种类相同,但挥发物组分相对含量存在差异。二甲四氯钠浓度导致异喇叭烯等13种挥发物组分(占种类总数的54.2%)相对含量的变化;而(-)-α-雪松烯等11种组分(占种类总数的45.8%)相对含量因施药天数不同而存在显著差异;二甲四氯钠与水稻品种间的互作使异喇叭烯等17种水稻挥发物组分(占种类总数的70.8%)相对含量显著改变。Effects of MCPA-Na on the volatiles from rice plants were studied. Twenty-four components were collected from headspace of rice plants by solid phase microextraction （SPME）, 8 of which were identified by gas chromatography coupled by mass spectrometry （GC-MS）, and the major components were sesquiterpenes （7 kinds）. Four of the identified components were reported for the first time in rice plant, including isoledene, （ - ）-α-cedrene, （ ＋ ）-β-cedrene and cedrol. Different treatments did not result in the emission of new compounds, but the proportions （% of total peak area） among the compounds in the blend were altered. The proportions of 13 components （accounting for 54.2% of total kinds） had significant differences in 3 levels of MCPA-Na concentration treatments. Different days after MCPA-Na treatment obviously altered the proportions of 11 components （accounting for 45.8% of total kinds）. Furthermore, the proportion differences of 17 components （accounting for 70.8% of total kinds） were attributed to interactions between MCPA-Na and rice varieties.

关 键 词：水稻 挥发物 二甲四氯钠 

分 类 号：S482.4[农业科学—农药学]