中国东南部部分悬钩子果实的营养成分

对中国东培１２种悬钩子果实营养成分的分析结果表明,悬钩子果实氨基酸含量为５．４４３－８．４１１ｇ／１００ｇ．ＤＷ,,ＶＥ为０．９１８－２．１１９ｍｇ．１００ｇ．ＦＷ,有机酸为０．７２１－４．９１０％和丰富矿质元素,有较高的营养价值和医疗保健作用。营养成分的含量在种间和种内存在差异。     

猕猴桃属植物果实营养成分的研究

本文报道猕猴桃属（Ａｃｔｉｎｉｄｉａ）３５个种类的果实的主要营养成分含量,猕猴桃果实维生素Ｃ的含量范围在１２．５４～１４０４．５２ｍｇ／１００ｇＦ．Ｗ,可溶性固形物含量范围在５．０％～１５．８％,总糖含量在０．９３％～９．０６％,总酸含量在０．２９％～２．５７％。果实最适宜的糖酸比为５～７,果实干物质１７种氨基酸含量范围在１．７９４％～９．０４％。文章还讨论了猕猴桃果实营养成分含量与开发利用价值的关系、果实的糖酸比与果实风味品质的关系、果肉汁液颜色与营养成分含量的关系等。     

兰靛果忍冬的果实解剖及其分类意义

本文对兰靛果忍冬的果实做了解剖学研究, 结果表明, 其果实并非浆果, 乃系由整个二歧聚伞花序(dichasium)发育成的浆果状复果。即参与果实形成的有两个小苞片, 两个萼简及两个子房, 此种果实又为复果提供了一种新的类型。 由于兰靛果忍冬果实的改变, 作者认为有必要将其由忍冬属分出, 另立兰靛果属(Metalonicera M.Wang et A.G.Gu, gen.nov.)。     

超声辅助索氏提取忍冬果实中绿原酸的工艺优化

利用超声辅助索氏提取的方法从忍冬果实中提取绿原酸。单因素和正交试验表明,影响绿原酸提取率的主次顺序为:超声温度>乙醇浓度>超声时间>索氏提取时间>液料比;提取的最佳条件为:超声温度60℃,超声时间40min,乙醇浓度70%,液料比(mL∶g)30∶1,索氏提取时间2.5h。忍冬果实中绿原酸的提取率为2.95%;柱色谱分离纯化后的绿原酸红外谱图和标准品的红外谱图基本一致。本研究表明,超声辅助索氏提取忍冬果实中绿原酸的方法,缩短了提取时间,绿原酸提取率高。对忍冬果实的开发利用具有重要的指导意义。     

蓝靛果忍冬果实黄酮类成分总含量的动态分析

采用比色法测定蓝靛果忍冬果实中黄酮类成分总含量,对不同时期蓝靛果忍冬果实中黄酮类成分总含量进行动态分析.     

授粉对黄瓜果实发育和品质的影响

以“滓绿3号”黄瓜为试材．研究了授粉对黄瓜果实发育、营养成分变化及采后果形变化的影响。结果表明,授粉可减少化瓜、刺激果实发育、提高果实商品性,并提高产节,其坐瓜率、商品瓜率、单瓜重及产节分别较单性结实提高63．0％、68．7％、22．6％和127．6％。授粉瓜和单性结实瓜均表现为随着果实发育．可溶性蛋白质和维生素C含量呈减少的趋势,可溶性糖含量呈逐渐增长的趋势,游离氨荩酸含量呈波动变化,但授粉瓜的4种营养成分均高于单性结实瓜。在采后1～5d,授粉瓜头部易膨大形成大头瓜．而单性结实瓜果形变化不大。     

基于形态和分子证据的大花忍冬复合群的种间关系(英文)

大花忍冬复合群主要分布在中国南部及周边地区,是忍冬属的主要疑难类群之一,包含大花忍冬、灰毡毛忍冬、细毡毛忍冬、菰腺忍冬和锈毛忍冬5种。该复合群是中国南部金银花的重要野生替代资源。本研究通过形态和生境观察、叶表皮微形态扫描和分子系统学分析相结合的方法,探讨了大花忍冬复合群的种间关系。结果表明,分子系统学方法没有解决该复合群之间的关系,仅灰毡毛忍冬的区分较为明显,基于形态学证据大致可将大花忍冬复合群分为以下3小群:菰腺忍冬以其独有的蘑菇状腺体与其他4种显著不同,毛被长度也明显长于其他种类;锈毛忍冬与大花忍冬的毛被较稀疏,但锈毛忍冬的花冠筒较短,气孔特征独特;灰毡毛忍冬与细毡毛忍冬的叶背密覆柔毛,二者的上表皮角质膜结构有差异。该复合群的物种形成和传播机制仍待深入研究。     

构树聚花果及其果实原汁营养成分的研究

对构树聚花果的营养成分进行分析,结果表明,其果实含有丰富的营养物质,氨基酸,糖类,矿质元素等成分,其果实原汁含有丰富的可溶性糖类,蛋白质,氨基酸,维生素等营养成分,此外,种子含有丰富的脂肪油（40．28％）,其脂肪油中人体必需的脂肪酸亚油酸的含量达（85．42）,其聚花果,果实原汁,种子油具有开发利用的价值。     

套袋对荔枝果实质量和农药残留的影响

用不同颜色和不同开口方式果袋对纪子笑荔枝进行套袋处理,对比研究了套袋对果实质量和农药残留的影响．结果表明,套袋对增进果实着色有明显效果,套袋果实Ⅰ、Ⅱ级果率在57．81％～81,57％之间,而对照仅为38．63％．套袋后果实的单果重量显著升高,尤其是白色袋的增重效果更为明显．虽然同种颜色的封口袋增重效果优于开口袋;但袋色对果实增重的影响作用远远大于套袋方式,开口袋不利于防虫,封口袋对防治荔枝虫害有一定效果,但防病效果不明显．套袋对果实营养成分的影响不显著,对果实品质无不利影响,但不利于农药的消解,可导致果实中甲氰菊酯和敌百虫残留量的增加,套袋果园配套农药品种的选择有待进一步筛选。     

忍冬属植物开花过程中绿原酸类化合物含量的变化

忍冬是中国传统中药材金银花的药源植物。采用高效液相色谱—光电二极管阵列检测器联用技术(HPLC-PAD)和高效液相色谱—电喷雾离子化—多级质谱联用技术(HPLC-ESI-MSn)对忍冬和4种同属植物在开花不同阶段中绿原酸类化合物进行了定性和定量分析,以明确忍冬属植物花的利用价值及其最佳采收期。结果发现:4种忍冬属植物花蕾及开放花朵中均含有新绿原酸、绿原酸、绿原酸甲酯、异绿原酸A和一种异绿原酸的异构体;绿原酸和总绿原酸在花蕾中的含量高于开放花朵,但贯月忍冬变化不显著;火焰忍冬、贯月忍冬、台尔曼忍冬中绿原酸和总绿原酸的含量在花蕾膨大期(大白期)和初花期(银花期)都高于忍冬,而格雷姆忍冬和忍冬差异不显著,研究表明,4种忍冬属植物花及花蕾都具有较高的开发利用价值。     

Chlorophyll isolation,structure and function: major landmarks of the early history of research in the Russian Empire and the Soviet Union

This paper covers major events of the early history of chlorophyll research in the Russian Empire and the Soviet Union from 1771 until 1952, when the modern period of studies on photosynthesis began in full swing. Short biographical sketches of key scientists, reviews of their major research contributions and some selected photographs are included. This revised version was published online in August 2006 with corrections to the Cover Date.     

巴戟天根的结构及其与蒽醌类化合物积累的关系

应用石蜡切片法、荧光显微镜和紫外分光光度法,对不同年生巴戟天根组织结构的变化进行了观察、对蒽醌类化合物在根中的分布场所及其积累动态进行了研究。结果表明:巴戟天根的结构类似一般多年生草本植物,薄壁细胞是巴戟天根中蒽醌类化合物的分布储存场所,蒽醌类化合物含量随着根生长年限的增加而增加。由以上研究总结出巴戟天以四年或四年以上采收为好,并以根皮厚、木心细者为上品。     

Protein intake regulation in the weanling rat: Effects of additions of lysine,arginine and ammonia on the selection of gluten and energy

The effects of adding lysine, arginine and ammonia to gluten on the self-selection of protein and energy by the weanling rat simultaneously offered a choice of two diets differing only in gluten concentration (15 and 55%) were tested. Previous studies have shown that while lysine (6 g/100 g) additions to gluten decreased the amount of gluten selected by the rat from 40 to 20 g per 100 g of food eaten, selection was not related to the nutritional quality of the gluten. When graded levels of arginine (1.8, 3.6 or 7.2 g/100 g) were added to the gluten with or without lysine (0 or 6 g/100 g) the dietary protein selection was unaffected. The addition of ammonia (1.4 g/100 g as NH₄Cl) to gluten had initially the same effect as lysine (6 g/100 g) but with time protein intake returned to control levels. This effect of ammonia was unaltered by arginine additions. It is concluded that the mechanisms which lead to decreases in gluten selection caused by lysine or ammonia are not similar, and that the effects of lysine on gluten selection are not caused by an increased arginine requirement for urea cycle activity.     

自分泌生长因子对早期胚胎体外发育的影响(简报)

生长因子(Growth Factors,GFs)对于调节哺乳动物胚胎的早期发育和分化起着重要作用,这些GFs存在于雌性生殖道,也可由胚胎自身合成。正是由于这种自分泌GFs的存在,使我们可以通过改变胚胎培养密度或添加外源性GFs来定性或定量研究GFs对胚胎发育和分化的影响,对于了解GFs在分子水平上的作用途径和机制有着重要的意义。     

河南玉兰属两新变种

发表河南玉兰属两新变种,即：①狭被望春玉兰(Yulania biondii (Pamp.) D. L. Fu var. angustitepala D. L. Fu, T. B. Zhao et D. W. Zhao,var. nov.);②椭圆叶罗田玉兰(Y. pilocarpa (Z. Z. Zhao et Z. W. Xie) D. L. Fu var. ellipticifolia D. L. Fu, T. B. Zhao et J. Zhao,var. nov.)。     

刺叶柄棘豆的一个新变型--白花刺叶柄棘豆

描述了棘豆属(豆科)刺叶柄棘豆(Oxytropis acipblla Ledeb．)的一个新变型：白花刺叶柄棘豆O．aciphylla Ledeb．f．albiflora Z．Y．Chang,Z．H．Wu et L．R．Xu。原变型的花冠为红紫色或蓝紫色,而新变型的花冠为白色。     

The effect of intrauterine infusions of prostaglandin E2 on luteal function in nonpregnant gilts

Two trials were conducted to study the effects of intrauterine infusions of prostaglandin E(2) (PGE(2)) on luteal function in nonpregnant gilts. Cannulae were surgically implanted on day 9 postestrus into the lumen of each horn with a cephalic vein cannula inserted for collection of peripheral blood. Intrauterine infusions of 0, 25, 75 or 200 mug of PGE(2) were initiated at 0900 h on day 12 and administered thereafter every 12 hr until estrus or day 22 in the first trial. The second trial protocol included an increase in the dose of PGE(2) administered as well as the frequency of infusion. Infusion of 0, 200, 300 or 400 mug PGE(2) was begun at 0300 h on day 12 and continued every 6 hr until estrus or day 22. Cephalic plasma samples for progesterone analysis were collected every six hours from 0300 h on day 11 to 2100 h on day 26 in both trials. In Trial 1 mean plasma progesterone concentrations for all treatments were not different (P>0.05) from the controls on any given day of the estrous cycle. Interestrous interval was unaffected by intrauterine infusion of PGE(2). The mean plasma progesterone concentrations for all treatments were not different (P>0.05) from the controls on days 11-18 of the estrous cycle in Trial 2. However, plasma progesterone concentrations for the 200-mug and 300-mug PGE(2) groups appeared to be greater than the controls on days 14 and 15, indicating a possible delay in the decline of progesterone for these groups. The mean plasma progesterone concentrations for the treatment groups were lower (P<0.05) than the controls on days 20-26 of the cycle. treatment cycle length did not differ (P>0.05) from previous cycle length; thus treatment with PGE(2) had no effect on interestrous interval. PGE(2) may have retarded the decline of progesterone secretion by the corpus luteum in some cases, but at these dosages and frequencies of administration PGE(2) was ineffective in prolonging luteal maintenance.