CN1625336A - 增强的除草剂组合物 - Google Patents
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Abstract
本发明公开了一种除草剂组合物,其包含PSI抑制剂以及水杨酸盐或其他SAR诱导剂,及该组合物的使用方法。
Description
发明背景
多种除草剂已用于杀死庄稼地或果园中不希望的植物(杂草)。通常,这些杀虫剂被喷洒到土壤上(出土之前)或植物上(出土之后)。
除草剂很昂贵,其使用可能导致非目标后果,例如对地下水的污染、对作物的损害、对环境的损害、喷雾偏差、以及人和哺乳动物的健康问题。
存在许多种类的除草剂,可根据作用方式进行分组。一类特别关注的除草剂是联吡啶鎓盐。这些化合物抑制光合体系I(PSI),例如对草快和敌草快。对草快在美国以包括Gramoxone和GramoxoneExtra在内的众多名称市售,而敌草快以包括Reglone和Reglox在内的众多名称市售。联吡啶鎓盐通过转移来自光合作用PSI的电子来发挥作用,随后被分子氧破坏。这导致超氧化物和相关自由基物质的生成。由自由基氧化导致的细胞损害使植物死亡。
存在众多可分类为植物系统获得性抗性(SAR)诱导剂的化合物。尽管这些化合物属于许多结构类别,所有这些化合物或化合物混合物能够增加植物对病原体侵袭的抵抗性。许多这样的SAR诱导剂引起水杨酸盐依赖的抗性途径的变化(如Harpin),其他可模拟水杨酸盐(如BTH),或者经由乙烯和茉莉酮酸酯依赖途径诱导抗性(如乙烯利)。
本发明的目的在于:增加作物植物对抗对草快和敌草快施用所带来的非目的除草后果的安全性。本发明的另一目的在于减少使用这些除草剂时非目标物种上的喷雾偏差影响。
发明概述
本发明涉及一种组合物,其包含除草剂和水杨酸盐以及其他系统获得性抗性诱导剂(SAR诱导剂)。本发明特别涉及一种除草剂组合物,其包含PSI抑制剂和水杨酸盐或其他SAR诱导剂。
本发明还涉及一种在水杨酸盐或其他SAR诱导剂存在下改变除草剂除草活性的方法。本发明特别涉及一种改变联吡啶鎓盐除草活性的方法,包括向所述联吡啶鎓盐中加入有效量的水杨酸盐或其他SAR诱导剂。本发明更特别涉及一种增加作物植物对抗PSI抑制剂除草活性的安全性的方法,包括向所述PSI抑制剂中加入有效量的SAR诱导剂。
在另一实施方案中,本发明涉及一种增PSI抑制剂选择性的方法,包括向所述PSI抑制剂中加入有效量的水杨酸盐或其他SAR诱导剂。
本发明的又一实施方案还涉及一种在水杨酸盐或其他SAR诱导剂存在下改变除草剂除草活性的方法。本发明特别涉及改变PSI抑制性除草剂的除草活性的方法,包括向所述PSI抑制性除草剂中加入有效量的水杨酸盐或其他SAR诱导剂。
发明详述
在本文中使用时,“SAR”诱导剂定义为任何能够开启植物对致病剂抗性的化合物,所述致病剂包括但不限于病毒、细菌、真菌或者它们的组合。此外,SAR诱导剂可诱导植物对昆虫摄食的抗性,如Enyedi等定义(1992,Cell 70:879-886)。
示例的SAR诱导剂包括许多化合物结构类别,但均具有诱导对植物疾病和害虫摄食的抗性的能力。一类SAR诱导剂是水杨酸盐。商业SAR诱导剂ActigardTM,MessengerTM,Keyplex350-DP,和Oryzemate可用于本发明。包括Goemar产品在内的引发剂是另一类可能具有此使用价值的实验性SAR诱导剂。此外,乙烯、其生物合成前体或乙烯释放性化合物如Ethrel被认为是可用于本发明的SAR诱导剂。此外,其他对植物疾病抗性途径具有激发作用的化合物是系统获得性抗性诱导剂,可用于增加植物对抗PSI抑制剂如对草快的安全性。
在本文中使用时,“水杨酸盐”(salicylate)定义为任何取代或未取代的在2位或邻位具有羟基的苯甲酸,或者其生物学可接受的盐或者生物学或化学前体。苯甲酸上的取代包括在3、4、5和/或6位的单、二、三或四取代;取代基可以以任何组合选自:具有1-4个碳的低级烷基;与苯甲酸在两个相邻点上连接的含3或4个碳的烷基桥;具有1-4个碳的低级烷氧基;卤素——氟、氯、溴或碘;氨基,其中氮可带有0、1或2个相同或不同的各自具有1-4个碳的低级烷基;硝基;甲酰基;乙酰基;羟甲基;甲氧羰基;氨甲酰基或氨磺酰基,其中氮可带有0、1或2个相同或不同的各自具有1-4个碳的低级烷基取代基;氰基;烷硫基;烷基亚磺酰基(alkylsulfoxy)或烷基磺酰基,其中烷基包含1-4个碳;或者单、二或三氟甲基。生物学可接受的盐包括普通碱金属钠和钾,碱土金属镁或钙,锌,或者铵或简单烷基铵阳离子如单、二、三或四甲基铵或带有至多7个碳的其他铵阳离子。2-羟基化苯甲酸的生物学或化学前体包括非羟基化苯甲酸及其具有至少一个游离邻位的衍生物,其中所述羟基通过所施植物的自然代谢过程来以生物学方式引入。2-羟基化苯甲酸的生物学或化学前体也包括其中2位羟基以如下方式被化学掩蔽的苯甲酸化合物:掩蔽基是不稳固的,在化合物施用到植物上后该掩蔽基易于通过植物正常代谢的酶促过程或者通过缓慢的自发水解而被脱除。掩蔽基的例子包括具有1-7个碳的一元羧酸的酯以及含3-13个碳的三烷基甲硅烷基醚。此外,在本文中使用时,术语“水杨酸盐”应理解为包括两种或更多种以上定义的单个纯物质的混合物。
本发明组合物含有99.999%-0.001%PSI抑制剂和99.999%-0.001%水杨酸盐或其他SAR诱导剂,优选99.99%-0.005%PSI抑制剂和99.99%-0.005%水杨酸盐或其他SAR诱导剂,最优选99.9%-0.01%PSI抑制剂和99.9%-0.01%水杨酸盐或其他SAR诱导剂,其余为水或其他惰性溶剂。
本发明组合物也可配制成对于商用具有足够储存稳定性并且在使用前用水稀释的含水除草剂浓缩液。该浓缩液具有100%-0.01%、优选50%-0.1%、最优选30%-1%本发明除草剂组合物的浓度。
为进行施用,将本发明组合物分散或溶解于水中至15%-0.0015%、优选5.0%-0.002%、最优选0.6%-0.05%的浓度。
在本发明可选的实施方案中,所述PPO抑制剂可配制成浓缩液,所述水杨酸盐或其他SAR诱导剂或者它们的组合可配制成浓缩液。然后,将所述两种浓缩液混合并在使用前稀释。
可用于本发明的代表性PSI抑制剂是对草快(methylviologen;1,1’-二甲基-4,4’-联吡啶鎓离子;CAS登记号4685-14-7),敌草快(1,1’-亚乙基-2,2’-联吡啶二鎓离子;CAS登记号2764-72-9),及它们的盐。联吡啶鎓除草剂包括Gramoxone和Reglone,以及任何含有单独或与其他除草剂组合的对草快或敌草快或其盐的制剂。
可用于本发明的代表性SAR诱导剂包括ActigardTM(苯并(1,2,3)噻二唑-7-硫代羟酸-S-甲酯),Syngenta Crop Protection,Greensboro,NC;MessengerTM(Harpin蛋白,一种天然存在的细菌蛋白),EdenBioscience,Bothel,WA;Keyplex350-DP),Morse Enterprises Ltd.,Miami,FL;和Florel品牌乙烯利,Southern AgriculturalInsecticides,Palmetto,FL。
本发明组合物包括准备好立即使用的固体和液体组合物,和要求在使用前稀释、通常用水稀释的浓缩组合物。
固体组合物可呈颗粒形式,或喷粉形式,其中活性成分与粉碎的固体稀释剂(例如,高岭土、膨润土、硅藻土、白云石、碳酸钙、滑石、粉状氧化镁、漂白土或硫酸钙)混合。它们也可呈可分散粉末或细粒的形式,其包含润湿剂以促进粉末或细粒分散到液体中。呈粉末形式的固体组合物可作为叶用粉剂施用。
液体组合物可包括活性成分在任选含表面活性剂的水或与水混溶有机溶剂中的溶液、悬浮液或分散体,或者可包括活性成分在与水不混溶的在水中作为小液滴分散的有机溶剂中的溶液或分散体。本发明组合物的优选活性成分是水溶性除草剂或者容易悬浮在水中,并且优选使用含水组合物和浓缩液。
本发明组合物可含附加的表面活性剂,包括,例如用以提高上述浓缩组合物相容性或稳定性的表面活性剂。该表面活性剂可以是阳离子型、阴离子型、或者非离子型或两性离子型,或者是它们的混合物。阳离子型表面活性剂例如是季铵化合物(如溴化鲸蜡基三甲基铵)。合适的阴离子型表面活性剂是皂类,硫酸脂肪族单酯的盐类,如十二烷基硫酸钠;和磺化芳香族化合物的盐类,如十二烷基苯磺酸钠,木质素磺酸钠、钙和铵,丁基萘磺酸盐,以及二异丙基和三异丙基萘磺酸钠盐混合物。合适的非离子型表面活性剂是环氧乙烷与脂肪醇如油醇和鲸蜡醇的缩合产品,或者环氧乙烷与烷基酚如辛基或壬基酚或者辛基甲酚的缩合产品。其他非离子型表面活性剂是衍生自长链脂肪酸和己糖醇酐的偏酯,如脱水山梨糖醇单月桂酸酯;所述偏酯与环氧乙烷的缩合产品;卵磷脂;和硅酮表面活性剂(骨架含硅氧烷链的水溶性或水分散性表面活性剂,如Silwet L77)。合适的矿物油中混合物是ATPLUS 411F。
通常用于农业组合物中的其他助剂包括相容剂、防沫剂、螯合剂、中和剂和缓冲剂、抗蚀剂、染料、添味剂、散播剂、渗透助剂、粘着剂、分散剂、增稠剂、防冻剂、抗菌剂等。组合物还可含其他相容的组分,例如其他除草剂、植物生长调节剂、杀菌剂、杀虫剂等,并可与液体肥料或固体特别是肥料载体如硝酸铵、尿素等制成制剂。
本发明组合物的施用率将取决于多种因素,包括例如活性成分,生长有待抑制的植物物种,物种的生长阶段,制剂和施用方法,例如除灌溉水或其他便利方式外还可以喷雾施用。但作为普通方针,喷雾溶液施用率为1000-10升/公顷,优选250-100升/公顷。
可用本发明组合物处理的代表性植物物种包括Nicotianatabacum(烟草),和Chenopodium album(藜),但不意在将本发明的组合物应用和方法限制于这些物种。
本发明可通过如下代表性实施例举例说明。
实施例
在所有实验中,去离子超纯净水用于制备溶液。喷雾溶液在混合后尽快使用。
用于这些研究中的除草剂和喷雾助剂包括:作物油浓缩液(COC;0rchex 796,83%;Ag Plus 300F17%),联吡啶鎓盐methyl viologen(对草快)或敌草快,水杨酸钠(NaSA)和SAR诱导剂Actigard,Messenger,Keyplex 350-DP,和Florel。
在所有除草剂施用中,植物被喷以足够体积以确保完全覆盖,导致喷雾溶液溢流。COC以0.25%(v/v)的比率加入所有喷雾溶液中。对于所有同时含除草剂和SAR诱导剂的处理,这些材料被混合并以单一喷雾溶液(常称作桶混制剂)施用。在喷雾后,将植物移至温室,以随机完全封闭实验设计来安排。在喷雾后,通过根据受影响叶面积百分比评估损害,来对植物评价植物毒性/除草效果。
所有数据进行偏差分析,平均间距用Duncan氏新多程测试在α=0.05测定。本发明可通过如下代表性实施例来举例说明。
实施例1
水杨酸盐的加入增加了烟草上植物对抗对草快除草剂损害的安全性(表1)。在所有测试的对草快比率观察到该效果,并该效果在实验过程中一直保持。
表1.针对烟草,水杨酸钠(NaSA)对对草快除草活性的影响 | ||
处理 | 第4天植物毒性 | 第6天植物毒性 |
作物油浓缩液,0.25%(v/v) | 1.0A | 1.0A |
NaSA,10mM+COC 0.25% | 1.3AB | 1.2ABC |
对草快,75mg/l+COC 0.25% | 3.8E | 3.7E |
对草快,75mg/l+10mM NaSA+COC 0.25% | 1.6BC | 1.6BC |
对草快,37.5mg/l+COC 0.25% | 2.9D | 2.7D |
对草快,37.5mg/l+10mM NaSA+COC 0.25% | 1.3AB | 1.3ABC |
对草快,7.5mg/l+COC 0.25% | 1.9C | 1.6C |
对草快,7.5mg/l+10mM NaSA+COC 0.25% | 1.2AB | 1.1AB |
植物毒性等级:1=没有损害,2=25%叶面积受损,3=50%叶面积受损,4=75%叶面积受损,5=100%叶面积受损(死亡)。n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例2
水杨酸盐保护植物防止对草快侵害的能力不限于烟草和双子叶植物。表2证明水杨酸盐能够增加单子叶植物物种上植物对抗对草快侵害的安全性。
表2.针对大狐尾,水杨酸钠(NaSA)对对草快除草活性的影响 | ||||
处理 | 第3天植物毒性 | 第7天植物毒性 | 第10天植物毒性 | 第14天植物毒性 |
作物油浓缩液,0.25%(v/v) | 1.0A | 1.0A | 1.0A | 1.0A |
NaSA,10mM+COC 0.25% | 1.0A | 1.0A | 1.0A | 1.0A |
对草快,75mg/l+COC0.25% | 4.3D | 4.7D | 4.7D | 4.7C |
对草快,75mg/l+10mMNaSA+COC 0.25% | 1.7B | 1.9B | 1.8B | 1.6B |
对草快,37.5mg/l+COC0.25% | 3.4C | 4.0C | 4.1C | 3.9B |
对草快,37.5mg/l+10mMNaSA+COC 0.25% | 1.4AB | 1.4AB | 1.3AB | 1.2A |
对草快,7.5mg/l+COC0.25% | 1.6B | 1.6B | 1.4AB | 1.3A |
对草快,7.5mg/l+10mMNaSA+COC 0.25% | 1.0A | 1.0A | 1.0A | 1.0A |
植物毒性等级:1=没有损害,2=25%叶面积受损,3=50%叶面积受损,4=75%叶面积受损,5=100%叶面积受损(死亡)。n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例3
水杨酸盐增加植物对抗对草快损害的安全性的能力不限于单独的对草快。SA也能增加烟草对抗除草剂敌草快的安全性(表3),证明该效果在此类除草剂中是较为普遍的。
表3.针对烟草,水杨酸钠(NaSA)对对草快或敌草快除草活性的影响 | ||||
处理 | 第1天植物毒性 | 第4天植物毒性 | 第6天植物毒性 | 第12天植物毒性 |
作物油浓缩液,0.25%(v/v) | 1.0A | 1.0A | 1.0A | 1.0A |
NaSA,10mM+COC 0.25% | 1.3AB | 1.1A | 1.1A | 1.2A |
对草快,150mg/l+COC0.25% | 4.1E | 4.5C | 4.7C | 4.2C |
对草快,150mg/l+10mMNaSA+COC 0.25% | 1.8BC | 2.0B | 2.0B | 2.2B |
敌草快,150mg/l+COC0.25% | 3.3D | 4.3C | 4.3C | 3.9C |
敌草快,150mg/l+10mMNaSA+COC 0.25% | 2.0C | 2.5B | 2.5B | 2.2B |
植物毒性等级:1=没有损害,2=25%叶面积受损,3=50%叶面积受损,4=75%叶面积受损,5=100%叶面积受损(死亡)。n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例4
水杨酸盐对抗对草快损害的保护不仅依赖于喷雾溶液中水杨酸钠的存在。当在对草快施用前经营养液培养预处理来施用水杨酸盐时,得到显著的对抗对草快损害的保护(表4)。
表4.针对烟草,水杨酸钠(NaSA)营养液培养预处理24h对对草快除草活性的影响 | ||||
处理 | 喷雾后第1天植物毒性 | 喷雾后第4天植物毒性 | 喷雾后第6天植物毒性 | |
营养液培养预处理24h | 喷雾处理 | |||
水 | 作物油浓缩液0.25% | 1.0A | 1.0A | 1.0A |
水 | 对草快150mg/l+COC 0.25% | 3.7D | 3.8D | 3.4E |
NaSA,1.0mM | 对草快150mg/l+COC 0.25% | 2.3C | 3.2C | 3.0E |
NaSA,10mM | 对草快150mg/l+COC 0.25% | 1.6B | 2.0B | 2.2D |
NaSA,50mM | 对草快150mg/l+COC 0.25% | 1.5AB | 1.8B | 2.1D |
NaSA,1.0mM | 作物油浓缩液0.25% | 1.0A | 1.0A | 1.1AB |
NaSA,10mM | 作物油浓缩液0.25% | 1.0A | 1.0A | 1.3ABC |
NaSA,50mM | 作物油浓缩液0.25% | 1.2AB | 1.5AB | 1.7BCD |
水 | NaSA,10mM+COC0.25% | 1.4AB | 1.4AB | 1.3ABC |
水 | 对草快150mg/l+10mM NaSA+COC0.25% | 1.5AB | 1.7B | 1.8CD |
植物毒性等级:1=没有损害,2=25%叶面积受损,3=50%叶面积受损,4=75%叶面积受损,5=100%叶面积受损(死亡)。n=4个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
此外,在施用对草快前施用作为喷雾溶液的水杨酸钠也导致安全性增加(表5)。在此实验中,植物进行处理并自首次喷雾处理后在黑暗中保持48小时以便延迟对草快的光依赖性效果。
表5.针对烟草,水杨酸钠(NaSA)黑暗预处理对对草快除草活性的影响 | ||||
处理 | 在光照中3天后(初始喷雾5天后)的植物毒性 | 在光照中12天后(初始喷雾14天后)的植物毒性 | ||
处理序号 | 在0小时喷雾处理 | 在24小时喷雾处理 | ||
1 | 作物油浓缩液0.25% | 1.0A | 1.0A | |
2 | 对草快150mg/l+COC 0.25% | 5.0D | 5.0D | |
3 | 对草快150mg/l+10mM NaSA+COC0.25% | 2.6C | 2.5C | |
4 | NaSA,10mM+COC0.25% | 1.4B | 1.5B | |
5 | NaSA,10mM+COC0.25% | 对草快150mg/l+COC 0.25% | 2.6C | 2.3C |
对于处理1至4,植物在0小时喷雾,在黑暗中保持48小时,然后移至光照中。对于处理5,植物用NaSA在0小时喷雾,在黑暗中保持24小时,用对草快喷雾,在黑暗中再保持24小时,然后移至光照中。植物毒性等级:1=没有损害,2=25%叶面积受损,3=50%叶面积受损,4=75%叶面积受损,5=100%叶面积受损(死亡)。n=4个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例5
水杨酸盐保护植物防止对草快侵害的能力不限于水杨酸钠,在烟草上也可观察到其他水杨酸盐衍生物的上述能力。例如,5-氟水杨酸盐能够增加烟草对抗对草快的安全性(表6)。
表6.针对烟草,水杨酸钠(NaSA)或5-氟水杨酸盐(5-FSA)对对草快除草活性的影响 | |||
处理 | 第6天植物毒性 | 第8天植物毒性 | 第11天植物毒性 |
作物油浓缩液,0.25%(v/v) | 1.0A | 1.0A | 1.0A |
NaSA,10mM+COC 0.25% | 1.1A | 1.1A | 1.1A |
5-FSA,5mM+COC 0.25% | 2.3B | 2.8B | 2.0B |
对草快150mg/l+COC 0.25% | 5.0E | 5.0C | 5.0E |
对草快150mg/l+10mM NaSA+COC 0.25% | 2.8C | 3.1B | 2.4C |
对草快150mg/l+5mM 5-FSA+COC 0.25% | 4.4D | 4.8C | 4.6D |
植物毒性等级:1=没有损害,2=25%叶面积受损,3=50%叶面积受损,4=75%叶面积受损,5=100%叶面积受损(死亡)。n=3个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例6
水杨酸钠增加植物物种安全性的能力并没有在所有物种中观察到。当施用水杨酸钠时,多种测试的杂草物种如藜显示出有限或无对抗对草快损害的保护(表7)。
表7.针对藜(Chenopodium album),水杨酸钠(NaSA)对对草快除草活性的影响 | |||
处理 | 第2天植物毒性 | 第4天植物毒性 | 第7天植物毒性 |
作物油浓缩液,0.25%(v/v) | 1.0A | 1.0A | 1A |
NaSA,10mM+COC 0.25% | 1.7AB | 1.65A | 1.4A |
对草快150mg/l+COC 0.25% | 3.9C | 3.9BC | 3.9BC |
对草快150mg/l+10mM NaSA+COC 0.25% | 3.9C | 4.2C | 4.4C |
植物毒性等级:1=没有损害,2=25%叶面积受损,3=50%叶面积受损,4=75%叶面积受损,5=100%叶面积受损(死亡)。n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
使用水杨酸盐增加作物植物对抗对草快或其他联吡啶鎓盐除草剂(PSI抑制剂)的应用导致表7所示差异性的安全性增加。
实施例7
向喷雾溶液加入SAR诱导剂Actigard(BTH)增加烟草上植物对抗对草快除草剂损害的安全性(表8)。在两个测试BTH比率均观察到所述效果,并且该效果在整个实验过程中一直保持。
表8.针对烟草,Actigard(BTH)对对草快除草活性的影响 | |||
处理 | 第2天植物毒性:受影响的叶面积百分比 | 第4天植物毒性:受影响的叶面积百分比 | 第7天植物毒性:受影响的叶面积百分比 |
作物油浓缩液,0.25%(v/v) | 0A | 0A | 0A |
NaSA 1600mg/l+COC 0.25% | 11.3B | 7.5AB | 5AB |
Actigard 187mg/l+COC 0.25% | 0A | 0A | 0A |
Actigard 935mg/l+COC 0.25% | 1A | 0A | 0A |
对草快150mg/l+COC 0.25% | 61.25E | 62.5F | 50D |
对草快150mg/l+NaSA 1600mg/l+COC 0.25% | 12.5B | 12.5BC | 7.5AB |
对草快150mg/l+Actigard187mg/l+COC 0.25% | 25CD | 20DE | 15BC |
对草快150mg/l+Actigard935mg/l+COC 0.25% | 22.5C | 17.5CD | 12.5B |
n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例8
向喷雾溶液加入SAR诱导剂Messenger(Harpin)增加烟草上植物对抗对草快除草剂损害的安全性(表9)。在两个测试Harpin比率均观察到所述效果,并且该效果在整个实验过程中一直保持。该表证明所观察到的影响不限于水杨酸盐合成模拟物BTH。
表9.针对烟草,Messenger(Harpin)对对草快除草活性的影响 | ||
处理 | 第2天植物毒性:受影响的叶面积百分比 | 第5天植物毒性:受影响的叶面积百分比 |
作物油浓缩液,0.25%(v/v) | 0A | 0A |
NaSA 1600mg/l+COC 0.25% | 3.25A | 3.25A |
Messenger 1120mg/l+COC 0.25% | 0A | 0A |
Messenger 11220mg/l+COC 0.25% | 0A | 0A |
对草快187mg/l+COC 0.25% | 65E | 83.75E |
对草快187mg/l+NaSA 1600mg/l+COC 0.25% | 15B | 23.75B |
对草快187mg/l+Messenger1120mg/l+COC 0.25% | 50D | 71.25D |
对草快187mg/l+Messenger11200mg/l+COC 0.25% | 30C | 52.5C |
n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例9
向喷雾溶液加入SAR诱导剂Keyplex 350-DP增加烟草上植物对抗对草快除草剂损害的安全性(表10)。在两个测试Keyplex比率均观察到所述效果,并且该效果在整个实验过程中一直保持。该表证明所观察到的影响不限于已知的SAR诱导剂,因为Keyplex的MOA还不十分清楚。
表10.针对烟草,Keyplex 350-DP对对草快除草活性的影响 | |||
处理 | 第1天植物毒性:受影响的叶面积百分比 | 第7天植物毒性:受影响的叶面积百分比 | 第10天植物毒性:受影响的叶面积百分比 |
作物油浓缩液,0.25%(v/v) | 0A | 0A | 0A |
NaSA 1600mg/l+COC 0.25% | 11.3B | 6.25A | 5.5BC |
Keyplex 12.5ml/l+COC 0.25% | 0A | 2.5A | 1.1AB |
Keyplex 60ml/l+COC 0.25% | 0A | 2A | 1.1AB |
对草快250mg/l+COC 0.25% | 75E | 96.5D | 99F |
对草快250mg/l+NaSA1600mg/l+COC 0.25% | 15.5C | 30.5B | 20.8E |
对草快250mg/l+Keyplex12.5ml/l+COC 0.25% | 25D | 30.5B | 20.5D |
对草快250mg/l+Keyplex60ml/l+COC 0.25% | 1.5A | 5.5A | 10C |
n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例10
向喷雾溶液加入SAR诱导剂乙烯利增加烟草上植物对抗对草快除草剂损害的安全性(表11)。不论是否用1-MCP——一种乙烯感知抑制剂进行预处理,都观察到上述结果。该效果在实验的整个过程中都被观察到。该表证明,所观察到的影响不限于介导SA依赖性途径的SAR诱导剂,也在乙烯依赖性途径中观察到上述影响。
表11.针对烟草,Florel(乙烯利)对对草快除草活性的影响 | ||
处理 | 喷雾后第4天植物毒性:受影响的叶面积百分比 | 喷雾后第6天植物毒性:受影响的叶面积百分比 |
作物油浓缩液0.25%(v/v) | 0A | 0A |
乙烯利1000μl/l+COC 0.25% | 0A | 0A |
对草快187mg/l+COC 0.25% | 95C | 97.5C |
对草快187mg/l+乙烯利1000μl/l+COC 0.25% | 75B | 65B |
Florel是3.9%(w/v)乙烯利(2-氯乙基)膦酸的溶液。n=4个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
实施例11
与水杨酸所观察的结果相比,SAR诱导剂增加植物物种对抗对草快的安全性的能力更宽泛。所测试的杂草物种之一——藜,在施用水杨酸时显示有限或不显示对抗对草快损害的保护,但在BTH与对草快桶内混合时显示安全性增加(表12)。
表12.针对藜(Chenopodium album),Actigard(BTH)对对草快除草活性的影响 | |||
处理 | 第2天植物毒性:受影响的叶面积百分比 | 第4天植物毒性:受影响的叶面积百分比 | 第7天植物毒性:受影响的叶面积百分比 |
作物油浓缩液,0.25%(v/v) | 0A | 0A | 0A |
NaSA 1600mg/l+COC 0.25% | 17.5AB | 16.25A | 10A |
Actigard 187mg/l+COC 0.25% | 0A | 0A | 0A |
Actigard 935mg/l+COC 0.25% | 0A | 0A | 0A |
对草快150mg/l+COC 0.25% | 72.5C | 72.5BC | 72.5BC |
对草快150mg/l+NaSA 1600mg/l+COC 0.25% | 73.75C | 78.75C | 85C |
对草快150mg/l+Actigard187mg/l+COC 0.25% | 47.5BC | 46.25B | 50B |
对草快150mg/l+Actigard935mg/l+COC 0.25% | 46.25BC | 53.75BC | 62.5BC |
n=5个植物。平均间距用Duncan氏新多程测试测定(α=0.05)。 |
本发明的一个用途在于使用水杨酸盐或其他SAR诱导剂增加作物植物对抗对草快或其他联吡啶鎓盐除草剂(PSI抑制剂)的安全性。通过向作物和非目标物种直接喷雾施用水杨酸盐或其他SAR诱导剂,通过在灌溉或营养液培养溶液中施用水杨酸盐或其他SAR诱导剂,或通过用水杨酸盐或其他SAR诱导剂进行种子处理,可在商业上利用水杨酸盐或其他SAR诱导剂增加对抗PSI抑制剂类除草剂的安全性的用途。
本发明的另一用途在于筛选新的抗应力(stress)化合物。例如,可通过测定降低PSI抑制剂如对草快除草活性的能力,评价候选抗应力化合物的效力。典型的候选抗应力化合物包括但不限于自由基淬灭剂和参与自由基保护或其他植物保护方式的酶的诱导剂。这些化合物可有效地用于降低多种植物应力如急冷损伤、霜冻损害、收获后障碍,盐应力,高光照应力,水应力,污染物应力如臭氧应力,衰老,或内部腐败。
本发明的另一用途在于识别优化已知抗应力化合物性能的制剂或施用方法。例如,可通过测定降低PSI抑制剂如对草快除草活性的能力,评价候选制剂的效力。
本发明的另一用途在于通过提高内在防御水平来选择性增加植物安全性。这可通过使用能提高植物内在防御性的引发剂来实现。此外,可通过育种或遗传工程生产具有高害虫或病原体抗性的植物,来增加作物植物对抗PSI抑制剂如对草快的安全性。
Claims (15)
1、一种除草剂组合物,其包含光合体系I抑制剂和水杨酸盐或其他系统获得性抗性诱导剂。
2、权利要求1的除草剂组合物,其中光合体系I抑制剂是对草快或敌草快。
3、权利要求1的除草剂组合物,其中光合体系I抑制剂占组合物的99.999%-0.001%,水杨酸盐或其他系统获得性抗性诱导剂占组合物的99.999%-0.001%。
4、权利要求1的除草剂组合物,其溶于水。
5、权利要求4的除草剂组合物,其中水占组合物的0.1%-99.99%。
6、权利要求1的除草剂组合物,其中系统获得性抗性诱导剂是苯并(1,2,3)噻二唑-7-硫代羟酸-S-甲酯(BTH),或者其生物可接受衍生物或盐。
7、权利要求1的除草剂组合物,其中系统获得性抗性诱导剂是Harpin蛋白或其生物可接受盐。
8、权利要求1的除草剂组合物,其中系统获得性抗性诱导剂是Keyplex 350-DP或其他Keyplex制剂。
9、权利要求1的除草剂组合物,其中系统获得性抗性诱导剂是2-丁基-1,2-苯并异噻唑-3(2H)-酮1,1-二氧化物(Probenazole),或者其生物可接受衍生物或盐。
10、权利要求1的除草剂组合物,其中系统获得性抗性诱导剂是包括真菌细胞壁片断在内的引发剂,或者其基于引发剂的制剂。
11、权利要求1的除草剂组合物,其中系统获得性抗性诱导剂是乙烯或者在降解后释放乙烯气的任何制剂。
12、权利要求1的除草剂组合物,其中所述水杨酸盐是水杨酸或其生物可接受盐。
13、权利要求1的除草剂组合物,其中所述水杨酸盐是水杨酸钠。
14、一种增加作物植物对抗光合体系I抑制剂除草活性的安全性的方法,包括向所述抑制剂中加入有效量的系统获得性抗性诱导剂。
15、一种增加含光合体系I抑制剂的除草剂组合物的选择性的方法,包括向所述组合物中加入有效量的系统获得性抗性诱导剂。
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Family Cites Families (8)
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US4203253A (en) * | 1978-01-16 | 1980-05-20 | The United States Of America As Represented By The Secretary Of Agriculture | Process for increasing oleoresin synthesis in pinus species |
ES2053612T3 (es) | 1987-04-29 | 1994-08-01 | Ciba Geigy Ag | Agentes para la proteccion contra enfermedades de las plantas. |
EP0313512B1 (de) | 1987-08-21 | 1992-11-25 | Ciba-Geigy Ag | Benzothiadiazole und ihre Verwendung in Verfahren und Mitteln gegen Pflanzenkrankheiten |
GB9613753D0 (en) * | 1996-07-01 | 1996-09-04 | Broekaert Willem F | Plant protection method |
HUP0104270A3 (en) | 1998-11-10 | 2002-04-29 | Syngenta Participations Ag | Herbicidal composition and use thereof |
US6281168B1 (en) * | 1999-01-19 | 2001-08-28 | American Cyanamid Co. | Herbicidal compositions and method of safening herbicides using benzothiazole derivatives |
CN1073803C (zh) * | 1999-04-03 | 2001-10-31 | 江阴市农药二厂有限公司 | 乙烯利·百草枯水剂 |
US6218336B1 (en) | 1999-10-26 | 2001-04-17 | Applied Carbochemicals | Enhanced herbicides |
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- 2002-12-19 EP EP02797463A patent/EP1499185A4/en not_active Withdrawn
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102870780A (zh) * | 2012-09-25 | 2013-01-16 | 河北科技师范学院 | 一种诱导黄瓜抗根结线虫的制剂及其制备方法 |
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BR0215675A (pt) | 2005-02-01 |
KR20040097264A (ko) | 2004-11-17 |
EP1499185A4 (en) | 2005-08-24 |
CA2480456A1 (en) | 2003-10-16 |
AU2002361831B2 (en) | 2007-07-19 |
WO2003084325A1 (en) | 2003-10-16 |
EP1499185A1 (en) | 2005-01-26 |
US6919298B2 (en) | 2005-07-19 |
AU2002361831A1 (en) | 2003-10-20 |
MXPA04009708A (es) | 2004-12-13 |
CA2480456C (en) | 2011-11-22 |
US20040009876A1 (en) | 2004-01-15 |
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