【摘 要】
：
芒果炭疽病是芒果的主要病害之一,在全世界各芒果产区均普遍发生.该病可造成芒果植株梢枯、叶枯、落花落果及采后果实大量腐烂.芒果炭疽病的病原菌为炭疽菌属Colletotrichum spp.,我国芒果上的炭疽病菌主要为胶孢炭疽菌Colletotrichum gloesporioidesPenz.,该病菌在柑橘、葡萄、芒果上的致病力存在明显差异.广西是我国芒果主产区之一,炭疽病常年流行为害.为弄清广西芒
【机 构】
：
广西农业科学院 微生物研究所 南宁530007 广西农业科学院 植物保护研究所 南宁530007
【出 处】
：
第四次全国植物抗病虫和病害流行与控制学术研讨会暨2015年西北植物病理学会学术年会
论文部分内容阅读
芒果炭疽病是芒果的主要病害之一,在全世界各芒果产区均普遍发生.该病可造成芒果植株梢枯、叶枯、落花落果及采后果实大量腐烂.芒果炭疽病的病原菌为炭疽菌属Colletotrichum spp.,我国芒果上的炭疽病菌主要为胶孢炭疽菌Colletotrichum gloesporioidesPenz.,该病菌在柑橘、葡萄、芒果上的致病力存在明显差异.广西是我国芒果主产区之一,炭疽病常年流行为害.为弄清广西芒果上炭疽病菌的致病力差异程度,以了解广西芒果炭疽病菌田间的优势群体,为芒果炭疽病的诊断、监控、防治、抗病选育以及今后抗性鉴定体系的建立提供依据,笔者对19株来源于广西不同芒果产区的炭疽病菌菌株的致病力进行了测定.接种后7d调查的结果显示：致病力最强的是采自田东县的菌株TD99,其次是采自钦州的菌株QZ1P,再次是采自田林县的菌株TL107,病斑面积和发病率分别为48.7mm2、100％,47.2mm2、100％,36.3mm2、66.7％,与对照的差异显著.致病力最弱的是采自钦州的菌株QZ3P和QZ7L,和对照一样未发病.另有4株菌株的致病力也很弱,病斑面积不足1mm2.由此可将19株菌株的致病力分为三个类型：强致病型,占15.8％；中等致病型,占52.6％；弱致病型,占31.6％.表明广西田间芒果炭疽病菌以中等致病型和弱致病型菌株为主.
其他文献
Alternative splicing (AS) is an important regulatory mechanism that contributes greatly to the diversity of eukaryotic transcriptomes.Much evidence has demonstrated that AS complexity is relevant to e
Natural antisense transcript (NAT),one prominent and complex class of regulatory RNA,is subject to regulation in stress response.In our study,strand-specific transcriptome sequencing was applied to id
Natural antisense transcript (NAT),one prominent and complex class of regulatory RNA,is subject to regulation in stress response.In our study,strand-specific transcriptome sequencing was applied to id
Seed storage proteins are the main repository for nitrogen and thus provide nutrient source for embryo germination,humans and livestock feeding.Prolamins,the major cereal seed storage proteins,accumul
Maize was domesticated from teosinte (Zea mays ssp.Parviglumis) about 9000 years ago in the Balsas region of South-Western Mexico.The external morphological changes since domestication have been widel
Drought stress is one of the important environment stresses that greatly limit plant growth and crop production.Maize is considered as one of the most drought sensitive crops,especially,drought stress
Drought stress is one of the important environment stresses that greatly limit plant growth and crop production.Maize is considered as one of the most drought sensitive crops,especially,drought stress
Seed development of flowering plants begins with the double fertilization,in which one sperm in the pollen fertilizes the egg to form a diploid zygote and then develop into embryo,while the other fuse
With rising energy demands and costs for fossil fuels,alternative energy from renewable sources such as maize cobs will become competitive.Maize cobs have beneficial characteristics for utilization as
植物抗旱性研究是比较老的研究课题,但是,植物受到水分胁迫时会引起一系列的生理生化变化和形态结构的改变,涉及到许多基因的调控,所以,植物抗旱性是一个相当复杂的问题.玉米是旱地作物中需水量最大,对水分胁迫很敏感的作物之一,在其生育期内至少需要2500mm的降水量.在以往的玉米抗旱研究中,人们都是通过干旱处理或高渗培养液模拟干旱条件,很多研究结果都不太一致,这可能是不同研究者干旱处理或高渗培养液模拟干旱