Corrections and clarifications

In note 6 (p. 54), of the Policy Forum "The paradox of critical mass for women in science" by H. Etzkowitz et al. (7 Oct., p. 51), the author of Fair Science: Women in the Scientific Community should have read, "J. Cole."     

Corrections and clarifications

In the introduction to the Women in Science '94 special section (11 Mar., p. 1467), associate editor Pamela J. Hines should have been credited with planning, inviting, and editing the Policy Forums in that section.     

Corrections and clarifications

The photo credit for the cover of the Women in Science 1994 cover (11 Mar., p. 1351) was incorrect. It should have read, "Tom Van Sant/Geosphere Project, Santa Monica, CA/Photo Researchers."     

Corrections and clarifications

In Elizabeth Culotta's article "Entrepreneurs say: "It's better to be the boss" (Special Section, Women in Science '93, 16 Apr., p. 406), Henry Etzkowitz was incorrectly described as a sociologist "at Rutgers University." Dr. Etzkowitz is at the State University of New York at Purchase.     

刺梨花药愈伤组织的增殖培养

[目的]建立最佳的刺梨花药愈伤组织增殖培养体系。[方法]以刺梨花药愈伤组织为材料,研究其生长周期及基本培养基和生长素对刺梨花药愈伤组织增殖的影响。[结果]刺梨花药愈伤组织增殖过程中,其干重的变化明显呈"S"型,生长周期为25 d。B5培养基有利于刺梨花药愈伤组织的生长,而MS培养基影响刺梨花药愈伤组织叶绿素的形成。NAA1.0 mg/L是刺梨花药愈伤组织增殖培养的最佳生长素和浓度。[结论]刺梨花药愈伤组织增殖的最佳培养基是B5+1.0 mg/L6-BA+1.0 mg/LNAA。     

Correction

29 April (p.734) and 13 May (p. 911) issues of Science The talk being given by Dr. Harold Varmus at the Science/HUGO Human Genome 1994 meeting on Monday, 3 October, in Washington, D.C., is entitled "Manipulating Cancer Genes in the Mouse."     

Retraction

Science is fully retracting the report "Detection of an infectious retrovirus, XMRV, in blood cells of patients with chronic fatigue syndrome" (V. C. Lombardi et al., Science 326, 585 (2009); 10.1126/science.1179052)     

Corrections

In "Women in Science: Some Books of the Year" (11 March, p. 1458) the name of the senior editor of second edition of The History of Women and Science, Health, and Technology should have been given as Phyllis Holman Weisbard, and the name of the editor of the first edition should have been given as Susan Searing. Also, the statement that the author of A Matter of Choices: Memoirs of a Female Physicist, Fay Ajzenberg-Selove, is now retired was incorrect.     

Human environment conference: citizen advisers muddle through

An article in Science (29 October, page 479) which alluded critically to a political appointee to a State Department environmental advisory committee, incorrectly identified the appointee as Mrs. Bruce B. Benson, president of the League of Women Voters. Science regrets the error and any injury done to Mrs. Benson's reputation and that of the League, and recognizes that they play respected roles in many governmental issues.     

美国2010年学术图书馆十大趋势及其启示

介绍ACRL发布的《2010年学术图书馆十大趋势》,在重点分析国内学术图书馆馆藏资源建设、读者需求特点、馆员的作用和图书馆合作等未来发展环境的基础上,提出了对中国学术图书馆发展战略的思考和启示。     

适合压花的月季品种筛选及保色技术研究

以12种常见月季品种作为试验材料,研究了不同月季品种最适合的压制方法,针对其中5种容易发生色变的月季品种研究其保色方法,筛选出这5种月季品种的最佳保色剂配方。结果表明:本试验选用的月季品种最佳压制方法为干燥板压花器压制,最佳保色方法是浸泡法,结论为: ‘明星’(Rose 'Star')最佳保色剂:3%柠檬酸+硫酸镁(MgSO4); ‘绯扇’(Rose 'Fei Shan')最佳保色剂:6%草酸; ‘果汁’(Rose 'Guo Zhi')最佳保色剂:1%柠檬酸; ‘俏佳人’(Rose 'Qiao Jia Ren')最佳保色剂:3%柠檬酸;‘肯尼迪’(Rose 'JFK')最佳保色剂:1%柠檬酸+硫酸镁(MgSO4)。     

桂西壮族常用野菜蘘荷的民族植物学研究

为了更好地了解桂西常用野菜蘘荷植物资源及民间利用情况,采用实地考查、查阅文献、访谈、随机抽样调查、目测与尺测结合、随机抽样后进行综合测算等方法,对蘘荷进行民族植物学研究。结果表明,蘘荷具有很高的药用价值和食用价值;同时也为桂西蘘荷资源的合理开发利用及可持续发展提供理论依据,并提出保护蘘荷资源的对策与建议,     

新疆乌拉泊库区3种灌木树干液流对比研究

[目的]为干旱区水源函养林适宜树种选择、健康培育及科学经营与管理提供理论依据.[方法]选择新疆乌拉泊库区水源涵养林3种主要灌木树种紫穗槐、榆叶梅和疏花蔷薇,利用热扩散探针配合自动气象站,于2009年5和8月对树干液流和气象进行同步监测.[结果](1)3种灌木树种树干液流流速呈宽单峰曲线;5月平均液流流速最高的是榆叶梅,达0.027 cm/s,其次是疏花蔷薇,为0.024 cm/s,最低的是紫穗槐,为0.018 cm/s;8月树干液流平均流速最高的是紫穗槐,达0.013 cm/s,其次是疏花蔷薇,达0.008 cm/s,最低的是榆叶梅,为0.007cm/s,该3种灌木树种5月树干液流速率均高于8月.(2)3种树种的树干液流流速与气温和太阳辐射强度呈现极显著正相关,与空气相对湿度为极显著负相关.除疏花蔷薇树干液流速率与风速有显著关系外,榆叶梅和紫穗槐树干液流流速与风速关系不密切.(3)5月日耗水量最高的是榆叶梅,为3.87L/d,紫穗槐和疏花蔷薇次之,分别为2.94和2.92 L/d;8月日耗水量最高的是紫穗槐,为2.12 L/d,榆叶梅和疏花蔷薇次之,分别为1.00和0.97 L/d.与3种灌木树干液流流速季节变化相似,日耗水量变化也表现为5月高于8月.     

News of Science

The news item on the American Nuclear Society and its new journal, Nuclear Science and Engineering (Academic Press. Inc., New York) that appeared on page 1015 of the 25 Nov. issue should have ended with the second paragraph. The remainder of the item deals with another new journal, Nuclear Physics (North Holland Publishing Company, Amsterdam; distributed in U.S.A. by Interscience Publishers, Inc., New York). Science regrets the error.     

分子标记在月季2n配子育种中的运用

通过介绍月季2n配子育种,概述了目前常用的分子标记技术如AFLP,RAPD的原理,方法,各自的优缺点,以及在月季育种中发挥的作用和存在的问题,进一步用分子生物学的观点阐述月季育种,通过新的育种方法和新的检验方法创造出新的月季品种。     

6个美国葡萄品种在南宁地区的栽培性状观察

【目的】筛选出适合南方地区栽培的葡萄新品种,丰富南方地区的葡萄栽培品种及育种材料。【方法】2009年3~7月对6个从美国引进的葡萄品种Norris、Stover、Carolina Black Rose、Blue Lake、Niagrara Rose和Daytona进行引种试种试验,采用田间观察法观察各品种的物候期和生长特性,并在实验室测定其果实品质。【结果】在简易避雨棚栽培条件下,6个品种均表现出良好的生长适应性和生长结果习性。【结论】Carolina Black Rose可作为鲜食品种、Niagrara Rose可作为鲜食和酿酒兼用品种、Stover和Daytona可作为酿酒品种在广西及南方地区适当推广。     

低温预处理对刺梨花药培养小孢子发育的影响

为明确低温预处理对刺梨花药离体培养过程中小孢子发育及愈伤组织诱导率的影响,进行低温预处理试验,结果表明:离体培养条件下,刺梨雄核存在3条发育途径,即A-V途径、A-G途径和B途径,以A途径为主;随着培养时间的增加,小孢子逐渐退化,低温预处理3d可在一定程度上延缓刺梨小孢子退化,提早雄核发育,并增加参与雄核发育小孢子数量,提高花药愈伤组织诱导率。     

我国试制Rose Bengal平板抗原用于绵羊布氏杆菌病诊断结果的分析

本文报道以布氏杆菌虎红平板凝集试验与标准布氏杆菌玻板凝集试验、试管凝集试验和补体结合试验对照,对1097份绵羊血清进行布氏杆菌病阳性率和符合率的观察。试验证明:虎红平板试验的阳性率与玻板和补反试验的阳性率相近,而与试管凝集试验的阳性率差异较大.同时与对照试验的阳性符合率均为低下.     

电子束处理对唐菖蒲M1代植株生长发育的影响

为了探讨电子束对唐菖蒲诱变育种的可行性和不同剂量的电子束对植株生长发育的影响,用能量为3MeV的电子束辐照唐菖蒲"江山美人"和"超级玫瑰"球茎。在苗期及初花期,电子束诱变处理有显著抑制植株的生长和发育的趋势。在初花期,随着剂量的增大,唐菖蒲"超级玫瑰"细胞间隙CO2体积分数和光合速率均受到刺激作用而增大(P<0.05);唐菖蒲对电子束辐照的半致死剂量在品种间存在差异,"江山美人"比"超级玫瑰"有更强的电子束耐受性;电子束处理唐菖蒲"超级玫瑰"球茎的半致死剂量(LD50)应为240 Gy,"江山美人"的半致死剂量(LD50)则大于240 Gy。     

海南降香黄檀炭疽病病原鉴定及防治

针对海南降香黄檀炭疽病的病原进行研究,结合危害症状、病原菌的菌落形态以及分生孢子特征等将海南降香黄檀炭疽病病原鉴定为胶孢炭疽菌Colletotrichum gloeosporioides（Penz.）Sacc．,并提出一些防治措施。