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《中国水稻研究通报》1997,(1)
Species of actinomycetes were collected andisolated from soil samples which were pickedfrom vegetable field, park land, and forest inHangzhou, Zhejiang Province. They were in-oculated in 250 ml flasks each containing 50 mlliquid medium and fermented on a rotary shak-er at 28℃. The agents for actinomycetes wereobtained seven days later. Four species of acti-nomycetes were selected through biological as-say. Experiments were conducted in the 相似文献
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Ｆｒｏｍｏｖｅｒ８００ｆｕｎｇａｌｓｔｒａｉｎｓｏｆＴｒｉ ｃｈｏｄｅｒｍａＳｐｐ．，６ｓｔｒａｉｎｓｗｅｒｅｆｏｕｎｄｔｏｇｒｅａｔｌｙｉｎｈｉｂｉｔｔｈｅｇｒｏｗｉｎｇｏｆＲｈｉ ｚｏｃｏｔｏｎｉａｓｏｌａｎｉ，ｔｈｅｐａｔｈｏｇｅｎｏｆｒｉｃｅｓｈｅａｔｈｂｌｉｇｈｔｉｎｄｕａｌｃｕｌｔｕｒｅ．Ａｍｏｎｇｔｈｅｍ，ｓｔｒａｉｎＴ３ｗａｓｔｈｅｂｅｓｔａｎｔａｇｏ ｎｉｓｔ，ｗｈｉｃｈｒｅｄｕｃｅｄｔｈｅ ｇｒｏｗｉｎｇ ｏｆｔｈｅｐａｔｈｏｇｅｎｂｙ５２．５４%（Ｔａｂｌｅ１）．Ｉｎｆｉｅｌｄ，… 相似文献
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CHENGQi SONGWei YOUChongbiao 《中国水稻研究通报》1992,(2):7-7
In rice field, especially in the fertilized field the combined nitrogen content is rather high. It is well known that the nitrogen compounds, particularly NH4^ inhibits the nitrogenase activity- of diazotrophs. So, the enhancement of nitrogen fixation ability of diazotrophs in the presence of ammonia by means of genetic manipulation will be of importance for agricultural use. 相似文献
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Ｔｒａｎｓｐｏｓｏｎｔａｇｇｉｎｇｉｓａｐｏｗｅｒｆｕｌｔｏｏｌｆｏｒｇｅｎｅｓｔｕｄｙ，ｅｓ ｐｅｃｉａｌｌｙｆｏｒｇｅｎｅｓａｍｏｎｇｄｉｆｆｅｒｅｎｔｐｌａｎｔｓ，ｓｕｃｈａｓＡｒａ ｂｉｄｏｐｓｉｓ，ｔｏｂａｃｃｏ，ａｎｄｔｏｍａｔｏ，ｅｔｃ．Ｔｈｉｓｅｆｆｅｃｔｉｖｅｓｔｒａｔｅｇｙｆｏｒｇｅｎｅｉｓｏｌａｔｉｏｎｈａｓｂｅｅｎａｐｐｌｉｅｄｔｏｒｉｃｅａｎｄｐｒｏｇｒｅｓｓｈａｓｂｅｅｎｍａｄｅｉｎｒｅｃｅｎｔｙｅａｒｓ．Ｗｅｄｅｖｅｌｏｐｅｄａｒａｐｉｄａｎｄｈｉｇｈ ｅｆｆｉｃｉｅ… 相似文献
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Wool fabrics, without any surface treatment, can undergo undesirable and irreversible structural changes of wool fiber during washing under heat and mechanical agitation, leading to high shrinkage of wool garments. The traditional method based on polyamide resin can prevent felting and/or shrinkage of wool textiles, but adversely affect the surface hydrophobicity. In the present study, a treatment solution was developed based on TriSilanolIsooctyl POSS® and 3- mercaptopropyl trimethoxysilane, which created wool surface with increased hydrophobicity and highly resistant to shrinkage or felting, as measured after 3×5A wash cycles (equivalent to 24 domestic washes). After the treatment, the wool fabric appeared to be superhydrophobic with a water contact angle of above 150°, compared to the untreated fabric. The treatment has marginal effect on mechanical performance as observed in tensile properties. Scanning electron microscopic images revealed a coating of POSS® on the wool surface. The dyeing of untreated and treated fabrics appeared to be uniform to the naked eye, though spectrophotometric analysis indicated a difference in the extent of dyeing performance. This research showed that POSS®-based treatment is a potentially effective approach for developing shrink-resistant wool textiles with enhanced surface hydrophobicity, in contrast to traditional chlorine/polyamide resin treatment. 相似文献
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B. Cenkkut Gültekin 《Fibers and Polymers》2016,17(8):1175-1180
Seaweed-based SeaCell® fibres have been considered as new materials for textile industry. In this study, seaweedbased SeaCell® Active fibres which have antifungal and antibacterial activity have been used. Simple, economic and green process is applied to investigate the bleaching performance of SeaCell® Active fabric. Bleaching process has been performed in a laboratory scale dyeing machine by using H2O2 at different concentrations. Also, different bleaching trials were carried out by varying temperature, pH and process duration. Colour Measurements of the bleached SeaCell® Active fabrics have been characterized by utilizing Datacolor SF 600 +. Tristimulus and Whiteness Index values have been calculated according to the CIELab system with D65/10 o observer values. After the bleaching treatment, the obtained results reveal that SeaCell® Active fabric with satisfactory whiteness index and improved lightness (L*) value can be obtained by processing the fabric at 90 °C for 60 min in a bleaching bath with fixed pH 7.5 containing 30 ml/l H2O2. SEM images of untreated and bleached SeaCell® Active fabrics also show that some fibres have been damaged after bleaching process. 相似文献
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Association of Phytate Formation with Grain Filling in Rice 总被引：1，自引：0，他引：1
WANGRuo-zhong XIAOLang-tao DINGJun-hui YANQinquan 《水稻科学》2003,11(1):38-42
The grain-filling characteristics of six rice varieties (combinations) and the relationships between their relative biochemistry composition during phytate synthesizing and grain plumpness were studied. Regarding results for ISHR1,ISHR2, R198 and JW21, with good grain plumpness, the two-step-filling in superior spikelets and inferior spikelets was not clear, while for ISHR3 and 559, with poor grain plumpness, it was very clear. From booting stage to flowering stage, the contents of phytate and inositol in varieties with good grain plumpness was obviously higher than those in varieties with poor grain plumpness. While at grain filling stage, the content of inorganic phosphorus in varieties with poor grain plumpness was obviously higher than that in varieties with good grain plumpness. The contents of phytate and inositol from booting stage to flowering stage was highly significantly correlated with the initial filling power (R0), the mean filling rate (RM) and grainfilling percentage (PGF), and the content of inorganic phosphorus at grain filling stage was negatively significantly correlated with R0, FM and PGF. Furthermore, effective approach to improving grain filling was put forward. 相似文献
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The creasing characteristic of fabrics is affected by many factors like yarn twist, fabric density, fabric constructions, fabric thickness apart from the fiber type. In the first part of this study, the effect of yarn fineness, yarn twist, fabric tightness and weave construction factors on crease recovery was studied. In the second part of the study, in order to improve the creasing recovery of the fabrics, shape memory alloy (SMA) wires were used and the effect of shape memory alloy (SMA) wire on the crease recovery of cotton fabrics produced with different types of weave constructions were determined. Due to the high cost of SMA wire and the weaving operation adversity the two experimental plans were designed according to Taguchi design of experiment (TDOE). From the analysis of the first part, it was found that the yarn linear density had the greatest effect on fabric crease recovery compare to others. Twist coefficient was the second, weft density was third and the weave construction had the least significant effect on the crease recovery. The fabrics produced with coarser and low twisted yarns with high tightness and longer floats in the weave construction have higher crease recovery property. In the second part of the study, the application of the SMA wire significantly increased the crease recovery angle of the fabrics. The thickness of the SMA wire is very important and the effect depends on the wire thickness. The increase of the SMA wire thickness increases the crease recovery significantly. However it must be appropriate with the yarn and fabric properties. The distance between the SMA wire distances was expected to increase the crease recovery however the effect was found not significant. The fabrics produced with coarser yarns with longer floats in the weave construction have higher crease recovery property. However, statistically the effects of these parameters were found not significant due to the dominant effect of the wire thickness. 相似文献
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YANWenchao QIUBoqin JINQingsheng LUORubi 《中国水稻研究通报》1996,4(4):9-10
In the Yangtze river aera, the first crop of indica rice is sown in fate Max to eariy Apt and transplanted in early May. Usually, seedlings perish when abnormal low temperature of 6-10℃ lasted for 3 d or longer. The effect of socking seed with urea solution on increasing the cold tolerance at the seedling stage was studied. 相似文献
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Studies on the inheritance of transgenic rice with bar gene 总被引：3，自引：0，他引：3
HUANGDanian LIJingyang XIAOHan ZHANGShanqing XUERui WANGXiaoling HUAZhihua XIEXiaobo 《中国水稻研究通报》1997,5(4):2-3
Bar gene driven under the control of CaMV 35s promotor was delivered into the immature embroys of a japonica rice cultivar Jingying 119 through biolistic approach. Two putative transgenic plants were produced, which ex-pressed Basra-resistance. One of the Basra-re-sistance transgenic rices was completely sterile(JY 119-3), the other was self-fertile (JY119-4). 相似文献
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DONGFenggao ZHUXuedong XIONGZhenmin 《中国水稻研究通报》1995,3(1):1-2
The development of photo-thermo period sensitive genie male sterile (PGMS) rice, which exhibits male sterility in summer but normal fertility in autumn, has provided an opportunity to simplify the breeding and seed production of hybrid rice. However,as the conversion of fertility of PGMS indica rice is affected by unusual low temperature in summer, it will part 相似文献
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《中国水稻研究通报》1995,(2)
Exploration of the strong heterosis of intersubspecies cross of rice has been hindered by the sterility problem in indica/japonica hybrids. Such incompatibility can be overcome by incorporation of the wide compatibility gene S_5~(11) into indica or japonica breeding lines. An alternation is to develop male sterile lines with S_5~n. From a cross of Zhenshan 97B, the main tainer line of WA type male sterile line Zhenshan 97A, with Pecos, a wide compatibility line from USA, a WA type male sterile line with wide compat ibility named as Shanqin A was successfully developed through successive selling and baekcrossing simultaneously (see figure). 相似文献
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《中国水稻研究通报》1999,(2)
Infected leaves of Monochoria vaginalis werecollected from fallow paddy field in CNRRI.They were surface sterilized with 0.1％ mer-cury solution and incubated on PDA plate.Apart of small pieces of mycelium from PDAplate were inoculated to tubule slants,and the 相似文献
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《中国水稻研究通报》1996,(1)
It is known that C_4 photosynthetic pathwaycontributes to higher CO_2—fixation effieiency.The enzyme activitie required for C_4 pathwayare generally present In C_3 plants such as ricewith much less amount But under photoinhib-itive conditions the activity of stomata closephosphoenol-pyfuvate Carboxylase(PEPCase),a key C_4 photosynthetic enzyme is induced toabout six times higher than that of basal aetivi-ty within 24 hours in leave.fronl a japonica- 相似文献