tetrad

The effect of four concentrations of Hg~(2+) on attachment,germination and growth of carpospore and tetraspore of Gracilaria tenuistipitata C.

研究了4种Hg2+浓度对细基江蓠果孢子和四分孢子附着、萌发和生长的影响。

Natural cycle of the algal life history is well understood, but the properties of development of tetraspore and carpospore are still very poorly known.

自然环境下角叉菜的生活史循环已得到阐释,但对其四分孢子及果孢子在室内条件下的早期发育过程还远远了解不够,因此有必要对其早期发育的具体特征和影响因素进行详细的分析研究。

Study on the Early Development of Tetraspores and Carpospores of Chondrus Ocellatus Holm (Gigartinaceae, Rhodophyta)

角叉菜四分孢子和果孢子早期发育的研究

Studies on Regeneration of the Fragments, Isolation and Developments of Protoplasts, Collection and Culture of Cystocarps and Tetrasporophytes from Gracilaria Lemaneiforms;

龙须菜切段再生、原生质体分离培养及果孢子与四分孢子的收集和培养的研究

The characteristics of tetrad was that the nucleus and Golgi bodies being in the active state.

四分孢子的显著特征是细胞核和高尔基体呈活跃状态。

Microspore abortion occured after the tetrad formation.

小孢子败育发生在四分体形成以后。

There is only one layer of parietal cells at the stage of sporogenous cell, megaspore mother cell and tetrad.

造孢细胞,大孢子母细胞和四分体时期,周缘细胞仅1层。

Ubisch bodies and lipid bodies are found in the glandular tapetums. In meiosis of microsporocyte, cytokinesisis is a simultaneous type, which produces an isobilateral tetrad.

小孢子母细胞减数分裂胞质分裂为同时型,产生正四面体型四分体。

When the flower buds separated and corolla facrogenous, flowers appeared and the megasporocyte formed.

当顶花花冠露出与花萼等长时,大孢子母细胞经减数分裂形成四个直线排列的大孢子。

Conidium (conidiospore) (pl.conidia) An asexual spore of certain fungi, especially of the Ascomycota and Fungi Anamorphici e.g.

分生孢子（无性孢子）：某些真菌产生的无性孢子。

(botany) of or relating to arthrospores.

（植物学）属于分节孢子，或有关分节孢子。

The method in isolation and purification of Nosema sp,a microsporidian pathogen isolated from Plutella xylostella

菜蛾变形孢虫孢子分离纯化方法研究

An asexually produced fungal spore, formed on a conidiophore.

分生孢子由分生孢子形成的无性繁殖出的真菌孢子

conidia occur on the lesion

在病斑上产生分生孢子

biology of conidial fungi

分生孢子真菌生物学

As a result, dyad spores formed.

结果形成二分体孢子。

Usually four sterigmata, each bearing one basidiospore, are borne on each basidium.

通常在一个担子上有四个担孢子梗，每个担孢子梗上都产生一个担孢子。

Conidial Production of Nimbya alternantherae SF-193 and Its Pathogenicity to Alternanthera philoxeroides

假隔链格孢SF-193的产孢特性及其分生孢子对空心莲子草的致病力

Variation in Conidial Thermotolerance and Related Cell-Wall Proteins of Beauveria Bassiana;

球孢白僵菌不同菌株分生孢子耐热力及相关孢壁蛋白分析

Fig.4. Pycnidiospore survival of Didymella bryoniae placed at soil surface,5,15, and30 cm below ground at field.

四、土壤表面、表下5、5及30公分土壤深度的瓜类蔓枯病菌柄孢子存活情形。