文章摘要
索如英,崇国庆.海带“叶烂”病害的初步研究[J].水产学报,1965,2(2):67~70
海带“叶烂”病害的初步研究
A PRELIMINARY STUDY ON THE“LEAF-ROT”DISEASES OF LAMINARIA
  
DOI:
中文关键词: 
英文关键词: 
基金项目:
作者单位
索如英 水产部烟台海水养殖试验场 
崇国庆 水产部烟台海水养殖试验场 
摘要点击次数: 1190
全文下载次数: 1272
中文摘要:
      海带(Laminaria japonica Aresch),自开展人工养殖以来就不断地发生各种病害。其中发生较普遍,危害较大的有“绿烂病”、“白烂病”和“点烂病”三种。“绿烂病”先发生于叶片尖梢并很快地向叶片中部漫延,发病部分由褐色变为绿色,而后腐烂脱落。“白烂病”通常是先发生于叶片尖梢的叶绿,然后向叶片中部发展,发病部分呈现白色。“点烂病”则先是从叶片中部叶绿上或同时于梢部叶绿上出现一些不规则的小白点,随着白点的增加和扩大,使该部叶片变白腐烂或形成一些不规则的孔洞。
英文摘要:
      Since the initiation of haidai (Laminaria japonica) cultivation on large scale in china,several kinds of diseases have been identified, among which the most serious and most commonare the "Green Rot", "White Rot" and "Spot Rot" diseases of the thalli. A preliminary st-udy on the pathological anatomy of the diseased thalli was made and the following resultswere obtained: 1. In the parts of the thalli diseased with "White Rot", the cells were empty, havingpractically lost all their protoplasm and with no or very few chromatophores. In those disea-sed with "Green Rot", the cells had very scanty protoplasm and their chromatophores were inthe process of disorganization, appearing greenish instead of brownish as in the normal cells.No bacteria were found in the cells in the early stages of both these diseases. There fore weagree with the earlier authors that these two diseases are not caused by bacterial infection. 2. In the parts of thalli diseased with "Spot Rot", small white spots were first formed,which later grew larger and finally became large holes. Examination of the white spots re-vealed that the protoplasm and chromatophores were absent in cells, and the holes were eachsurrounded by a distinct, deeply colored ring of cells. It is our opinion that this disease, likethe above two, is not caused by bacterial infection, although in the later stages of the diseasebacterial growth may help its spread.
HTML   查看全文   下载PDF阅读器
关闭

手机扫一扫看