《华北农学报》引文分析

用文献计量学的原理和方法，对１９８６～１９９３年《华北农学报》发表的论文及其引文进行了分析，结果表明，《学报》刊登论文６５１篇，引文共３９４７篇，平均引文数为６．０６篇，其中，中文占引文总数的６０．０７％，外文占３９．９３％。在引文中期刊占６９．７８％，图书和特种文献占３０．２２％。自引率较低。另外，对不同省、市、区所报道的重点统计分析表明，其选题新颖，具有地方特色。     

禅宗文化影响下的日本枯山水庭院

文章以禅宗文化的基本观点和美学意境为切入点,逐层分析日本传统园林的艺术理念、空间布局、理山叠水、植物配置;结合日本传统枯山水庭院的具体实例,试从上述四个方面分析日本园林的独特造园手法及其艺术成就。对比不同国家的园林艺术并借鉴其优点,希望对中国环境艺术设计今后的发展起推动作用。     

Nest site characteristics and nest loss of Marsh Grassbird at Zhalong National Nature Reserve,China

The Marsh Grassbird Locustella pryeri is an uncommon songbird endemic to East Asia. Suitable nest-site selection can minimize nest loss, especially for open-cup and ground nesting passerines. We locate...     

P-coumaroyl glycosides of cyanidin and peonidin in the flowers of Japanese garden iris,Iris ensata Thunb.

Summary The anthocyanins in outer perianths of seven varieties and one telotrisomic line of Japanese garden iris, Iris ensata Thunb., were analysed by high-performance liquid chromatography procedures. Two new anthocyanins, peonidin 3RGac5G and cyanidin 3RGac5G were putatively detected in this species, and peonidin 3RGac5G was the major anthocyanin for all the varieties except Telotri-1 and cyanidin 3RGac5G the major anthocyanin for Telotri-1. Moreover, cyanidin 3RGac5G and peonidin 3RGac5G are useful anthocyanins for the breeding of red and magenta flowers. Finally, the breeding strategy for new flower varieties using cyanidin 3RGac5G and peonidin 3RGac5G was discussed.Contribution from the Laboratory of Plant Breeding, Faculty of Agriculture, Miyazaki University, Japan, No. 84.     

Detection and inheritance of a stylar protein associated with a self-incompatibility genotype of Japanese pear

Summary Stylar proteins in 6 cultivars of Japanese pear (Pyrus serotina Rehd.) with different self-incompatibility alleles were examined by isoelectricfocusing polyacrylamide gel electrophoresis (IEF-PAGE). Cultivars used involved 1 self-compatible mutant Osa-Nijisseiki obtained from Nijisseiki (S₂S₄). Banding patterns of proteins were almost the same among the 6 cultivars except for 3 bands; one of which associated clearly with self-incompatibility S₂-allele (hereafter the protein referred to as S₂-protein) and was easily detectable because of its large amount and its pI value differed from many other proteins. Two other bands were seemingly associated with S₃- and S₄-alleles, respectively. The S₂-protein was apparently present in the styles of Osa-Nijisseiki.The inheritance of S₂-protein was studied by using 15 selfed plants of Osa-Nijisseiki. Eight out of 15 plants possessed the S₂-protein as a major component of the stylar proteins and 3 plants as a minor component. The remainder 4 plants did not have the protein. This result may support that the S₂-protein is the actual S₂-gene product.Abbreviations IEF-PAGE isoelectrifocusing polyacrylamide gel electrophoresis - CBB Coomassie Brilliant Blue     

Variations in the content of starch-granule bound protein among several Japanese cultivars of common wheat (Triticum aestivum L.)

Summary The starch-granule bound proteins of common wheat (Triticum aestivum L.) and six related species were examined by SDS-polyacrylamide gel electrophoresis. They showed almost the same molecular weight, 61 kD. The amount of the starch-granule bound protein varied among Japanese wheat cultivars although the variation was not as wide as that for rice. The amount of this protein of Kanto 107 and Kanto 79 was about 40% of that of Norin 98. In addition, wheats with lower starch-granule bound protein also possessed lower amylose content.     

Estimation of the proportion of offspring having soluble solids content in fruit exceeding a given critical value in Japanese persimmon

In fruit breeding, the selection is often based on individual plant performance, therefore, the expected proportion of offspring having genotypic values exceeding a given critical value (EP) was estimated for soluble solids content (SSC) in Japanese persimmon (Diospyros kaki Thunb.). A simple model was used in the study: the mean value of offspring in a full-sib family is solely determined by the regression of that on midparental value (MP) and all families have an equal within-family variance due to segregation. The population consisted of 39 full-sib families with three offspring each. Between-family variance was much smaller than within-family variance. Genetic variance for MP was much smaller than that for offspring. The EP therefore was not highly affected by the regression. Based on the parental mean performance of 35 fruits on a single tree for three years, the proportion of offspring having SSC higher than 18% was estimated as 32%, 50% and 69% for three groups of MP differing in SSC, i.e. 16.5%, 17.5%, and 18.5%, respectively. The distributions which were predicted using those results for 246 offspring from 46 families, and 86, 44, 43 and 31 offspring from four selected families, respectively, were largely consistent with those observed.     

我国罗汉果研究的文献分析

罗汉果是广西著名特产，运用文献计量学方法．对1989-2006年我国罗汉果研究的文献计量、文献来源、作者及文献内容等四个方面进行分析，从情报学角度探究我国罗汉果的研究现状及存在问题。