游动孢子

Dial-ysed analysis showed that only high molecular components in potato exudate hadpromotion effect,whereas both high and low molecular components in onion exu-date had inhibition effect on zoospore germination and appressorium formation.

分析经透析后的浸出液表明，马铃薯浸出液中仅高分子物质对游动孢子萌发和附着胞形成具有促进作用，而洋葱浸出液中高分子和低分子物质均抑制游动孢子萌发和附着胞形成。

And it also showed that the inheritance of the growth-rate and pathogenicity to cotton seedlings of XC-6 could not be inherited steadily in zoospore progenies and oospore progeny, but the colony morphology and homothallic character of XC-6 could inherited steadily in both asexual and sexual progenies, which suggested that the inheritance and variation of the above characters might be related to long-selfing and hybridization in species.

同时，XC-6生长速率、对棉苗的致病力、菌落形态及同宗配合遗传和变异特性研究表明，其生长速率和对棉苗的致病力性状在单游动孢子后代和自交后代均不能稳定遗传，但菌落形态和同宗配合特性在单游动孢子后代和自交后代均能稳定遗传，提示上述性状在单游动孢子后代和自交后代的遗传和变异特性可能与菌株长期自交和种内杂交有关。

And it also showed that the inheritance of the growth-rate and pathogenicity to cotton seedlings of XC-6 could not be inherited steadily in zoospore progenies and oospore progeny, but the colonyKey words: Phytophthora boehmeriae, Biological character, Inheritance

同时，XC-6生长速率、对棉苗的致病力、菌落形态及同宗配合遗传和变异特性研究表明，其生长速率和对棉苗的致病力性状在单游动孢子后代和自交后代均不能稳定遗传，但菌落形态和同宗配合特性在单游动孢子后代和自交后代均能稳定遗传，提示上述性状在单游动孢子后代和自交后代的遗传和变异特性可能与菌株长期自交和种内杂交有关。

The temperature for pathogen sporangium to germinate and to release moving spore is 5～35oC,the optimum temperature is 10～20oC.Under suitable temperature, the sporangium germinate and release moving spore within 2 hours, water film is the essential for sporangi...

霜霉病菌孢子囊萌发释放游动孢子的温度范围为5～35℃，最适为10～20℃，在适宜的温度范围内2小时孢子囊就可释放游动孢子；孢子囊必须在水膜中才能萌发；在供试的碳源中，孢子囊在乳糖液中萌发最好；在供试的氮源中，孢子囊在硝酸铵液中萌发最好；孢子囊萌发的pH值范围为4.5～9.0，最适为8.5。

Besides,interaction of preinvasion of Phytophthora in festans and variousplants was studied by using modified cellulose membrane technique.Potato tuberand leaf promoted both the zoospore germination and appressorium formation,or-ange fruit only promoted the zoospore germination and no effect on appressoriumformation.While onion bulb inhibited the both zoospore germination and appresso-rium formation.

此外，本文利用改进的纤维素膜技术研究了致病疫霉侵入前与15种不同植物之间的相互作用，明确马铃薯块茎和叶片对致病疫霉游动孢子萌发、附着胞形成和侵入丝形成均有促进作用，日本桔果实只对游动孢子萌发有促进作用，对附着胞形成无明显影响，葱和洋葱鳞茎则对游动孢子萌发和附着胞形成均有明显的抑制作用。

Haploid spores are mostly, but there are a small number of diploid , such as the brown algae and some species of Ectocarpus are still on the sporophyte produces diploid mitosis after the swimming spores, which germinate directly to produce sporophytes.

孢子大多为单倍体，但也有少数为二倍体，如褐藻中的水云等一些种类还在孢子体上经过有丝分裂产生二倍体的游动孢子，它直接萌发产生孢子体。

Some of these spores in the sporangium After the mitotic generated, such as clothes swimming algae spores, Rhizopus spores of the cyst, chlorella-like pro-spores, etc.; some spores in the sporangia produced in the future through meiosis, such as Ulva lactuca , kelp, to money, gourd moss, fern and so on.

其中有的孢子是在孢子囊中经过有丝分裂所产生的，如衣藻的游动孢子、根霉的孢囊孢子、小球藻的似亲孢子等；有的孢子是在孢子囊中经过减数分裂以后产生的，如石莼、海带、地钱、葫芦藓、蕨等。

Peronosporales An order of the OOMYCOTA characterized by sexual reproductionby zoospores and sexual reproduction by zoospores produced from oospores.

霜霉目：以游动孢子的有性生殖和由卵孢子产生的游动孢子的有性生殖为特征的卵菌门的一个目。

Boehmeriae were studied, and the results indicated that the zoospores of P. boehmeriae could be inactivated obviously by irradiating with 30W ultraviolet light 50cm away from the culture dishes tested and that 95% germination of zoospores could be restrained by 30W ultraviolet light treatment for 40sec.The mycelium growth from mycelium discs of P. boehmeriae were inhibited mostly by 30W ultraviolet light treatment for 20min. Afterwards, the inhibitive rates were decreased with the rise of the treatment time, which showed that the mycelium discs of P. boehmeriae had produced flexibility to ultraviolet rays after being irradiated by certain dosage of ultraviolet light.

研究了紫外光对苎麻疫霉生物学特性的影响，结果表明，30W的紫外灯管距培养皿50cm照射处理对苎麻疫霉的游动孢子具有明显杀灭作用，紫外光照射40sec可以抑制95%的游动孢子萌发；紫外光照射20min对菌丝块的菌丝生长的抑制率达最大，以后随着处理时间增加，抑制率却有降低的趋势，说明苎麻疫霉的菌丝块，经一定剂量紫外光照射后对紫外线产生了适应性。

Forming or consisting of a colony of zooids.

形成一群游动孢子的，或由一群游动孢子构成的

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。