【摘 要】
：
Chestnut blight caused by Cryphonectria parasitica is one of the major chestnut diseases occurred on stems and branches. Oriental chestnut has more resistance t
【机 构】
：
Department of Forest Diseases and Pests, Korea Forest Research Institute, Seoul 130-712, Korea“,”Res
论文部分内容阅读
Chestnut blight caused by Cryphonectria parasitica is one of the major chestnut diseases occurred on stems and branches. Oriental chestnut has more resistance than American one. Twenty-five cultivars of chestnut tree including various cultivars such as Tsukuba, Okkwang, Rihei, Ginyose, Eunsan, etc. Were tested with a rapid, simple and reliable method. The cultivar Banseki is one of the most resistant cultivars tested and has the necrotic area of 0.40 cm2. However, the necrotic areas of the cultivars of American chestnut, Eunsan, Kwangjujoyul and Eaton, ranges from 3.35 to 2.61 cm2 and these cultivars are relatively susceptible to this pathogen. Many pycnidia of this pathogen were observed on the inner and outer bark tissues after incubating for 3 weeks.
其他文献
目的 了解抚顺市新抚区居民碘盐食用情况,为普及食用合格碘盐提出对策.方法 按东、西、南、北、中抽取9个街道,其中东、西、南、北各随机抽取2个街道,中片抽取一个街道,每个
The volatile organic compounds(VOCs) are emitted by a wide array of products, which include a variety of chemicals, some of them may have short- and long-term a
本文从病机、症状、专方专法等方面,对糖尿病肾病的中医药疗法等进行了综述,体现了中医药治疗糖尿病肾病的优势和特色.
The objective of this study was to investigate the surface free energy of poplar and yellow pine strands by Wilhelmy Plate Method.The measurement items included
我国要从制造大国转变为制造强国,实现工业转型升级,提升产品质量标准,就需要大批具有"工匠精神"的高技能型人才。高等职业院校要培养具有"工匠精神"的人才,必须从项目化的课
This study investigated the effect of weight percent gain (WPG) and compression set on the crystallity of compressed poplar wood. Tests were conducted to determ
目前,大部分高职院校在开展"双创"教育时还是依靠传统的基础教育课程。随着"互联网+"时代的到来,创新创业教育相应的课程体系亟须进行改革,以紧贴时代对人才的需求。为此,高
在高职教育工作中培养学生的职业素养是十分重要的,这对学生今后的健康发展、良好就业有极大的影响。语文学科是高职教育的重要课程,在培养学生职业素养中具有很强的优势。高
Many domestic and inteational scholars have done a wide range of researches on electromagnetic theory and technology and have made some achievements. Electromag
The paper separately discusses interplay of pine wood nematode and several key biological factors related to pine wilt disease, such as host trees, insect vecto