萌发

Biological characteristics of Curvularia lunataBoedijn had been preliminarily studied. Optimal mediums for pathogen growth were PSA,PDA and OMA.For mycelia growth,sporulation and conidial germination of pathogen,optimal temperature was 25～30℃,and pH 5～9.Among the tested carbon and nitrogen resources,sucrose,glucose,carbamide,sodium nitrate,etc were beneficial for mycelia growth and sporulation.The conidia germination is strict in RH requirement:Conidia can germinate at RH 81%～98%,or have 100% germin...

香蕉大灰斑病菌适合生长的培养基有PSA、PDA和OMA；菌落生长、产孢和孢子萌发最适宜的温度为25～30℃，pH 5～9；在碳源和氮源中，蔗糖、葡萄糖、尿素、磷酸氢二氨和硝酸钠有利于病菌生长和产孢；分生孢子萌发对湿度有严格的要求，RH≥80%以上分生孢子萌发，随湿度增加萌发率增高；光照对菌丝体无显著影响，光暗交替有利于孢子的形成；孢子致死温度为55℃(10min)。

To understand the adaptability and ion regulation mechanisms of Medicago sativa, Melilotus officinalis, and Astragalus adsurgens seeds at their germination stage to saline environment, the seeds were treated with different concentrations of NaCl, and their germination rate and recovery germination rate ere determined. In the meantime, the changes of main ions contents in seed embryos and the water uptake by the embryos at 400 mmol L^(-1) of NaCl were investigated.

试验对3种豆科牧草紫花苜蓿、草木樨、沙打旺的种子，在萌发阶段对盐渍环境的适应性和离子调控机制进行了研究，测定了盐渍环境中种子的萌发率和恢复萌发率；同时，对400mmolL^(-1)NaCl处理后，种子恢复萌发、胚的主要离子含量变化、水分吸收等情况进行了测定。

De Bary were tested and the morphological change of sporangia was observed under microscope. The results showed that spore germination rate was closely related to ozone concentrations.

de Bary孢子囊萌发进行了试验，结果表明：臭氧水处理对孢子囊萌发的影响与臭氧水浓度密切相关，以9 mg/Kg臭氧水处理1 min可以抑制95%以上孢子囊萌发，以18 mg/Kg臭氧水处理1 min则100%抑制孢子囊萌发。

The sac structure projected through the pollen aperture possesses the typical nature of transfer cell, i. e complex lybrinthian wall ingrowth and abundant mitochondria, RER, dicotysomes and ribosomes under the wall. Its outer surface is closely related to the tapetal protoplast. The accumulation of storaged material in pollen start at the area near the apertures. Above restults indicate the pollen apertures may be the"door"from where nutrition flows into pollen in P. hortorum.

绒毡层物质向花粉粒的短途运输明显的表现在花粉的萌发孔区，一方面形成向外突起的囊腔，另一方面在这里具有发达的壁迷宫，而且迷宫下具丰富的线粒体，RER和高尔基体等细胞器，此外花粉内贮藏物的大量积累首先从萌发孔附近开始以及萌发孔处与绒毡层有紧密接触都说明天竺葵花粉萌发孔可能是物质进入花粉的&门户&。

The results showed that the seed germination rate decreased gradually as the NaCl concentration increased .The seed germination rate and imbibition rate was lowest when the seeds were treated with 200 mmol·L~(-1)NaCl; the recovery rate of ungerminated seeds in 150 and 200 mmol·L~(-1)NaCl had no significant difference with the control and it was more higher than the seeds in100 mmol·L~(-1)NaCl.

的种子，逐日测定萌发率、吸胀率；5 d、10 d后测定种皮和种胚的Na~+、K~+含量；培养15 d后，将含有NaCl的营养液中未萌发的种子分别转入1/4 Hoagland营养液继续培养，测定解除盐胁迫后种子萌发的恢复率；以探索不同浓度的NaCl处理对海滨木槿种子萌发及其种皮和胚的Na~+、K~+含量的影响。

Persicum when seeds were submerged in 700 mmol.L-1 NaCl solution, especially for recovery germination and total germination when ungerminated seeds were air-dried and then transferred to distilled water, while these were increased markedly when seeds were submerged and aerated in 700 mmol.L-1 NaCl in H.

与囊果碱蓬和梭梭相比，自梭梭种子在700 mmol·L~(-1) NaCl浸泡后种子萌发率、恢复率和总萌发率都很低，尤其是未萌发种子风干后的恢复率和总萌发率更低。

The result showed that there were significant effects of different sowing stage on the growth stage, the sprouting of axillary bud and yield of ratooning rice, rice sowed on March 31 was best, and the grain yield was highest that sowed on April 11 was worse, but it could mature normally, that sowed on April 19 could not reach full heading stage before safely full earing date, so some panicles could not be heading or could not mature normally.

结果表明：不同播种期对再生稻生育期、腋芽萌发和产量均有明显影响，以3月31日播种的腋芽萌发好，再生季产量高，4月11日播种的腋芽萌发较差，但能正常成熟，4月19日播种的腋芽萌发差且不能在安全期内齐穗，导致部分穗子不能抽穗或能抽穗但不能正常成熟。

The results showed that pollen in differentfamily or genus of plant have different requirements for phytohormones.The basicmedium of pollen culture supplemented with 2ppm NAA and GA_3 can promotes thepollen germination in Cruciferae.It has been proved that basic medium supplemtedwith 2ppm IAA and GA_3 has special effect on pollen germination and elongation ofpollen tube of woody plant in Rosace...

结果证明：不同科属的植物花粉对激素的要求不同，如在花粉萌发的基本培养基上加2ppm的NAA和GA_3混合液对十字花科植物花粉有促进作用，加2ppm的IAA和GAa_3混合液对蔷薇科木本植物花粉萌发和花粉管伸长有显著效果，而葫芦科植物的花粉在基本培养基上只要有无机盐离子就可以萌发，激素仍有促进花粉萌发的作用。

The optimum temperature is 26℃ for germination of oospores, the rate of germination reached up to 83.5%.

不同大豆疫霉菌株萌发率存在显著差异，以Ps-597-3萌发率最高，达到80.0%。26℃对卵孢子萌发最合适，萌发率高达83.5%。

Culture medium, water volume, root exudates of different crops, temperature, illumination affecting germination conditions of oospores of Phytophthora sojae studied in this reasch and compared the difference of germination of oospores of different race of Phytophthora sojae, filtrated the higher germination rate of strain and suitbable conditions combination of germination of oospores; The pure-line(Race 1) in virulence was obtained through isolation and culture and virulence identify of the second generation. The pure-line was analyzed by molecule method of ISSR. The results were summarized as follows:There was quite difference of germination rate of oospores on different culture medium.

本文测定了不同培养基、水量、农作物根渗出液、温度、光照对大豆疫霉菌卵孢子萌发影响，比较了大豆疫霉菌株间卵孢子萌发的差异，筛选出萌发率较高的菌株和适于卵孢子萌发的条什组合；通过继代单卵孢株分离培养和毒性鉴定，建立了大豆疫霉菌单卵孢株毒性纯系，并分析了单卵孢株毒性纯系后代群体ISSR分子指纹，结果如下： 1。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。