Preliminary Discussion on Stigma Vitality of Sterile Line Rong 18A and Its Application in Seed Production

Rong 18A is an Indica three-line sterile line bred with M5B×D Xing B, and has the characteristics of stable sterility, high outcrossing rate, good combining ability and good quality. With Rong 18A as an experimental material and Ⅱ-32A, Jin 23A and Gang46 A as the CK materials, a seed setting rate estimation method by daily pollination was used for measuring its stigma vigor, to comparatively analyze the decreasing rates and lasting time of stigma vigor of various materials under natural condition. According to experimental results and combining with field breeding practice, the application of stigma vigor of sterile lines on hybrid rice seed production was discussed.

A Preliminary Study on Nitrogen Use Efficiency of Hybrid Rice Combinations Derived from CMS Line Rong 18A

In order to investigate characteristics of nitrogen use efficiency of CMS line Rong 18A, four hybrid rice combinations （Rong18 You188, Rong18 You198, Rong18 You662, Rong18 You908） derived from CMS line Rong 18A were used as experimental materials with Ⅱ You838 and Gangyou725 as controls. A split-plot experimental design was performed with four nitrogen fertilizer application rates to analyze the effects of different nitrogen fertilizer application rates on the yield and yield component factors of rice. The results showed that nitrogen fertilizer could significantly increase effective panicle number to improve rice yield. The increment in rice yield per unit nitrogen fertilizer application rate demonstrated a descending trend with the increase of nitrogen fertilizer application rate. Under low nitrogen levels, hybrid rice combinations derived from Rong 18A exhibited relatively high nitrogen use efficiency and showed remarkably high nitrogen use efficiency under low nitrogen levels.

High-yielding Seed Production Techniques of Disease-resistant and High-quality Hybrid Rice Sterile Line Rong 18A

Rong 18A, bred by Crop Research Institute, Chengdu Academy of Agri- culture and Forestry Sciences is a new blast-highly resistant and high-combining ability hybrid rice sterile line. It is currently one of the male sterile lines in Sichuan Province which combine well high grain quality and rice blast resistance. More than 20 combinations of Rong 18A have passed the national and provincial variety iden- tification. Combined with the climate conditions in Chengdu, the key points of high- yielding seed production techniques for Rong18A are analyzed and summarized in this paper.

Rong Shuan Jiao Nang in the treatment of acute mountain sickness and high altitude myocardial ischemic syndrome in Yushu

To evaluate the therapeutic effects of Rong Shuan Jiao Nang （RSJN） on treatment of acute mountain sickness （AMS） and high altitude myocardial ischemic syndrome in workers in Yushu, three groups were studied： group A （60 patients with AMS, given RSJN）, group B （15 patients with altitude myocardial ischemic syndrome, given RSJN）, and group C （control, without drugs）. All studied subjects were lowland workers who were first time entry to Yushu for work at an altitude of 4 250 m. During the course of treatment, a routing physical examina- tion was performed, AMS Lake Louise Scores were estimated, arterial oxygen saturation （SaO2）, electrocardiography and hemoglobin concentration were measured before and after using RSJN for 10 days. In group A, the effective rate was 68 %, symptomatic improvement in 54 cases （90 %） within 5 days. In group B, the effective rate was 93 %, episodes of angina pectoris stopped in 12 patients within 3 - 7 days, one lasted 8 days. After treatment, the level of SaO2 increased 15.5 %, 21.8 % and 5.6 % in group A, group B and group C, respectively. RSJN tak- en at the start of the arrival at Yushu can decrease AMS scores and facilitate cure. If taken after the illness has begun, RSJN may help lessen symptoms, especially effectively improved angina pectoris of the high altitude myocardial ischemic syndrome. Symptoms usually subside after 3 - 8 days. RSJN should be continually used lbr at least 7 days after ascent.

INVESTIGATION OF BEHAVIOR OF AMMONIUM SULFATE ON SURFACE OF IRON OXIDE Rong Sheng LI~*, Jing Feng CHEN, Hun YANG, Wu Yang ZHANG Dept. of Chemistry, Jilin University, Changchun 130023,

hhen ammonium sulfate-iron oxide is treated below 573 K, ammonium sulfate can spontaneously desperse on the surface of iron oxide. Simultaneously ammonium sulfate decomposes to some extent. During or after the dispersion, sulfate ion can interact with Fe atom on the surface of iron oxide to form a sort of surface sulfato complex of Fe and thus is transformed from the isolated into the bidentately bound form. Above 573 K the sulfato complex of Fe will gradually decompose with a further increase in temperature.

MA RONG JUN—AN EXPERT IN HYDROMETALLURGY AND ENVIRONMENT ENGINEERING

Professor Ma Rongjun was bron in 1931 at Dacheng County of Hebei Province. He graduated from Northeast University of Technology in 1955 and studied as a postgraduate at Kosice

DETERMINING THE CONTENT OF JASMINODIN IN MEI RONG CAPSULE WITH THIN LAYER CHROMATOGRAPHY

Objective Jasminodin in Mei Rong capsule was determined by the method or thin layer chromatog- raphy. Mothods The sample Jasminodin was extracted with methanol and then the extract was chromatographed on silica gel GF254 plate with chloroform-methanol-water(10:3:1) as mobile phase and the chromatograms were scanned by using Shimadzu CS-930 dual wavelength TLCS in zegzag scanning mode at λ_s 370nm and λR 250nm. Results Callbration graph was rectilinear between 2.7μg^16.2μg per spot for the jasminodin. Conclusion Satisfa- tory results were obtained with the average recovery ratio of 99.76%,RSD 2.27%.

Rong Tie and His Paintings

Rong Tie was educated in the Central Academy of Fine Arts, majoring in calligraphy, in 1996, he began his postgraduate study in calligraphy at Capital Normal University. He studied in the “elite class” at China Institution of Arts Studies in 2002 and became a visiting scholar at Peking University in 2003. His titles include: National First-Class Artist, academician of the China Artists Association, deputy secretarygeneral of the Traveling and Friendship Center of the China Artist Association,

Integrated evaluation of HPLC fingerprints for the quality control of Ginseng Yang Rong Wan by multi-wavelength fusion fingerprint method

The aim of this study was to develop comprehensive evaluation methods for the quality control of Ginseng Yang Rong Wan(RSYRW).Multi-wavelength fusion fingerprints were successfully developed by high-performance liquid chromatography,which avoided the one-sidedness of single fingerprinting.Characteristic fingerprints of thirty batches of samples were generated at five wavelengths and evaluated by quantified ratio fingerprint method(QRFM).The results showed that thirty batches of samples were classified into seven grades.The methods established in this paper were found suitable for the analysis of Ginseng Yang Rong Wan.