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Rupert Barneby had 263 publications (two of which were published with two volumes each) during his career (including 56 book reviews), and additionally published new taxa and combinations in 16 publications by B. A. Krukoff, S. L. Welsh, and A. Lourteig. In total, these publications amount to 7676 pages. Each entry was examined, was dated as accurately as possible, and was annotated with any new nomenclauture presented in the publication. Barneby published 4 new subtribes within the legumes, 9 new genera of legumes (one based on a new combination) and 6 new genera of Menispermaceae, 621 new species (including 6 new nothospecies), 16 new subspecies, 355 new varieties, and 1 new form. Additionally, he published 238 new infrageneric taxa (subgenera, sections, or subsections). he made numerous new combinations (including nomina nova) at the infrageneric level (169), the species level (582), the subspecific level (27), and the varietal level (533), as well as a single combination at the form level.  相似文献   

3.
A review is presented of the history and recent trends in the exploration and development of food plants in southern Africa. The opportunities for developing new crops and new products for local and international markets are discussed. More than 120 species with potential as new food and beverage products (including functional foods, herbal teas and new flavours) are listed and a subjective rating of the commercial potential is provided for each of them. Some noteworthy examples are discussed and illustrated, including several indigenous fruits and vegetables that are as yet poorly known. There is a growing awareness of the importance of indigenous plants in new product development and numerous new products are already being developed. Basic research in botany (to guide genotype selection), horticulture (to develop new crops), food science (to focus on nutritional analyses) and marketing (to understand and develop new marketing approaches) is mentioned as important priorities.  相似文献   

4.
林祁   《广西植物》1999,19(4):334-336
对国产黄杨科5 种植物作了分类学修订或补充: 将雀舌黄杨归入匙叶黄杨, 中间黄杨归入黄杨, 多毛板凳果归入板凳果, 双蕊野扇花归入羽脉野扇花; 恢复黄杨和尖叶黄杨的原学名;报道宜昌黄杨在湖南的新记录。  相似文献   

5.
一种用于食草动物粪便显微组织分析的临时装片新技术   总被引:1,自引:1,他引:0  
曹伊凡  苏建平 《兽类学报》2006,26(4):407-410
粪便显微组织分析法是研究食草动物食性的主要方法,其常规装片技术需要使用Hoyer's 装片介质对植物碎片进行封片,而Hoyer's 封片液的粘性易导致植物碎片在装片过程中发生卷曲和重叠,影响植物碎片的识别效果。本文提出的新装片技术采用没有粘性的饱和NaCl 溶液代替Hoyer's 装片介质,结合特定的定量取样方法和装片程序,可以有效地减少植物碎片的卷曲率和重叠率。对比试验显示,新装片技术可使植物碎片卷曲率从10.4% 下降至3.8%,重叠率从25% 下降至8.1% ,说明新装片技术在减少植物碎片卷曲和重叠方面明显优于常规装片方法。  相似文献   

6.
P. F. Lasko  M. L. Pardue 《Genetics》1988,120(2):495-502
The region of the second chromosome of Drosophila melanogaster defined by Df(2R)vgB was screened for recessive lethal and visible mutations. Fifty-eight new recessive alleles fall into 17 complementation groups. Many new vg alleles were also isolated in a screen for new vg deficiencies. The breakpoints of the new vg deficiencies were nonrandomly distributed. The distal breakpoints of twelve of 20 deficiencies overlapping Df(2R)vgB are genetically identical to that of Df(2R)vgD, coinciding with the position of a complex, pleiotropic locus, l(2)49Ea-Psc-Su(z)2.  相似文献   

7.
In addition to previously obtained furanosesquiterpenes, two new eudesmanolides and a new glechomanolide were isolated from the fruits of Smyrnium cordifolium, while the roots gave two new eudesmanolides. The new compounds from the fruits were 1β-acetoxy-eudesman-4(15), 7(11)-dien-8,12-olide, 1β-acetoxy-8β-hydroxy-eudesman-4(15),7(11)-dien-8,12-olide, 1β,10α;4α,5β-diepoxy-8-hydroxy-glechomanolide, those obtained from the roots were smyrnicordiolide and the corresponding 8β-hydroxy derivative belonging to a new type of oxepine derivative.  相似文献   

8.
A genetically engineered strain of Pseudomonas putida U designed for the identification of new therapeutic herbicides has been obtained. In this bacterium, deletion of the homogentisate gene cluster (hmgRABC) confers upon this mutant huge biotechnological possibilities since it can be used: (i) as a target for testing new specific herbicides (p-hydroxy-phenylpyruvate dioxygenase inhibitors); (ii) to identify new therapeutic drugs-effective in the treatment of alkaptonuria and other related tyrosinemia - and (iii) as a source of homogentisic acid in a plant-bacterium association.  相似文献   

9.
Day respiration (R(d)) is an important parameter in leaf ecophysiology. It is difficult to measure directly and is indirectly estimated from gas exchange (GE) measurements of the net photosynthetic rate (A), commonly using the Laisk method or the Kok method. Recently a new method was proposed to estimate R(d) indirectly from combined GE and chlorophyll fluorescence (CF) measurements across a range of low irradiances. Here this method is tested for estimating R(d) in five C(3) and one C(4) crop species. Values estimated by this new method agreed with those by the Laisk method for the C(3) species. The Laisk method, however, is only valid for C(3) species and requires measurements at very low CO(2) levels. In contrast, the new method can be applied to both C(3) and C(4) plants and at any CO(2) level. The R(d) estimates by the new method were consistently somewhat higher than those by the Kok method, because using CF data corrects for errors due to any non-linearity between A and irradiance of the used data range. Like the Kok and Laisk methods, the new method is based on the assumption that R(d) varies little with light intensity, which is still subject to debate. Theoretically, the new method, like the Kok method, works best for non-photorespiratory conditions. As CF information is required, data for the new method are usually collected using a small leaf chamber, whereas the Kok and Laisk methods use only GE data, allowing the use of a larger chamber to reduce the noise-to-signal ratio of GE measurements.  相似文献   

10.
Four new species of Cyclopoida from deep-sea waters are described and placed in two new genera: Giselina gen. n. and Sensogiselina gen. n. The new genera and species belong to a new monophyletic group within the cyclopinid cyclopoids. A new name, Giselinidae, is proposed for this monophylum. The new family is characterised by the combination of the following characters: (1) tergite of leg 1 fused to cephalosome dorsally, but incompletely fused laterally, (2) absence of aesthetascs on ancestral antennulary segments XVI, XXI and XXV, (3) absence of antennary exopodal setae, (4) presence of only three spines on distal exopodal segment of leg 1, (5) absence of inner setae on first endopodal segments of legs 1–4, (6) outer terminal and distal inner elements of distal endopodal segment of leg 4 transformed into spines, (7) distal outer element of leg 5 exopod transformed into a spine, (8) leg 6 with only one seta, and (9) furcal setae I and III located on dorsal margin. Received in revised form: 16 June 2000 Electronic Publication  相似文献   

11.
X-ray diffraction, neutron diffraction and differential scanning calorimetry were used to investigate phase transitions in the ternary system phospholipid/dimethyl sulfoxide (DMSO)/water under cooling for three homologous phospholipids: dimyristoylphosphatidylcholine (DMPC), dipalmitoylphosphatidylcholine (DPPC), and distearoylphosphatidylcholine (DSPC). Below the temperature of ice formation from -40 to -113 degrees C, a new lamellar phase of DPPC and DSPC was found at and above a DMSO molar fraction of X(DMSO) = 0.05. Below X(DMSO) = 0.05 only a single dehydrated Lc-phase exists after ice formation. The new phase has an increased membrane repeat distance and coexists with a dehydrated Lc-phase. DPPC with a DMSO molar fraction of X(DMSO) = 0.07 shows a membrane repeat distance of the new phase of d = 6.61 +/- 0.03 nm. The value of d increases at the increase of X(DMSO). The new phase was not observed in the ternary system with DMPC. No correlation between the new phase and the glass transition of bound water in the intermembrane space was detected. The new phase was detected only in the systems with excess of water. The creation of the new phase demonstrates the specific DMSO interaction with hydrocarbon chains.  相似文献   

12.
The Hardness (Ha) locus controls grain texture and affects many end-use properties of wheat (Triticum aestivum L.). The Ha locus is functionally comprised of the Puroindoline a and b genes, Pina and Pinb, respectively. The lack of Pin allelic diversity is a major factor limiting Ha functional analyses and wheat quality improvement. In order to create new Ha alleles, a 630 member M(2) population was produced in the soft white spring cultivar Alpowa using ethylmethane sulfonate mutagenesis. The M(2) population was screened to identify new alleles of Pina and Pinb. Eighteen new Pin alleles, including eight missense alleles, were identified. F(2) populations for four of the new Pin alleles were developed after crossing each back to non-mutant Alpowa. Grain hardness was then measured on F(2:3) seeds and the impact of each allele on grain hardness was quantified. The tested mutations were responsible for between 28 and 94% of the grain hardness variation and seed weight and vigor of all mutation lines was restored among the F(2) populations. Selection of new Pin alleles following direct phenotyping or direct sequencing is a successful approach to identify new Ha alleles useful in improving wheat product quality and understanding Ha locus function.  相似文献   

13.
An equilibrium density gradient centrifugation study involving the separation of "old" and "new" membranes has been developed to determine the manner in which protein, lipid, and chlorophyll are incorporated into growing intracytoplasmic membranes (chromatophores) of Rhodopseudomonas spheroides. Chromatophores derived from cells grown in an H(2)O-medium had a density of 1.175 to 1.180 g/cm(3) and were readily separable from chromatophores having a density of 1.220 to 1.230 isolated from cells grown in a 70% D(2)O-medium. After a shift from "D(2)O-" to "H(2)O"-based media, only hybrid chromatophores derived from a combination of "heavy" (old) and "light" (new) chromatophore material could be detected. The experimentally determined, median density values for the growing intracytoplasmic membrane system followed a theoretically determined profile which was calculated from the density of full "heavy" and full "light" material assuming random, homogeneous incorporation of new material into old membrane. The distribution of the radioactive labels for protein (leucine) and chlorophyll (delta-aminolevulinic acid) were identical and showed a reproducible displacement of the "old" material to the heavy side of the optical density at 365 nm (OD(365)) absorbance and a displacement of the "new" material to the light side of the OD(365) absorbance profile. Specific phospholipid growth showed no displacement for either the "old" or "new" material from the median absorbance profile.  相似文献   

14.
In this paper, a new effective model is proposed to forecast how long the postoperative patients suffered from non-small cell lung cancer will survive. The new effective model which is based on the extreme learning machine (ELM) and principal component analysis (PCA) can forecast successfully the postoperative patients' survival time. The new model obtains better prediction accuracy and faster convergence rate which the model using backpropagation (BP) algorithm and the Levenberg-Marquardt (LM) algorithm to forecast the postoperative patients' survival time can not achieve. Finally, simulation results are given to verify the efficiency and effectiveness of our proposed new model.  相似文献   

15.
Abstract This paper reports a new subfamily, a new genus and a new species, that is, Pacrinae subfam. nov., Pacris gen. nov and Pacris xizangensis sp. nov in Gomphoceridae. The new subfamily is allied to Orinhippinae of Gomphoceridae and it differs from the latter by wings and tympanum absent. The new genus is similar to Orinhippus Uvarov, 1921 but differs from the latter in: (i) foveolae absent; (ii) tegmina absent; (iii) tympanum absent; (iv) hind margin of pronotum with incised in the middle. Type specimens are deposited in the Museum of Hebei University, Baoding, China.  相似文献   

16.
Glycopeptide analogues of CSF114(Glc), modified at N-terminus with new ferrocenyl carboxylic acid and a new ferrocenyl-thiphosphino amino acid, were used to implement a new electrochemical biosensor for autoantibody detection in multiple sclerosis. The ferrocenyl moiety of these "electrochemical probes" did not affect autoantibody recognition both in SP-ELISA and in inhibition experiments. By electrochemical monitoring the interactions of the modified peptides Fc-CSF114(Glc) and 4-FcPhP(S)Abu-CSF114(Glc) with the autoantibodies, we demonstrated that autoantibodies could be detected with a sensitivity comparable to ELISA method. The new electrochemical probes can be proposed to characterize autoantibodies as biomarkers of multiple sclerosis by a simple, rapid, and reproducible cyclic voltammetry-based diagnostic methodology.  相似文献   

17.
In plants, non-coding small RNAs play a vital role in plant development and stress responses. To explore the possible role of non-coding small RNAs in the regulation of the jasmonate (JA) pathway, we compared the non-coding small RNAs between the JA-deficient aos mutant and the JA-treated wild type Arabidopsis via high-throughput sequencing. Thirty new miRNAs and 27 new miRNA candidates were identified through bioinformatics approach. Forty-nine known miRNAs (belonging to 24 families), 15 new miRNAs and new miRNA candidates (belonging to 11 families) and 3 tasiRNA families were induced by JA, whereas 1 new miRNA, 1 tasiRNA family and 22 known miRNAs (belonging to 9 families) were repressed by JA.  相似文献   

18.
应用光学显微镜和扫描电子显微镜,观察到在一种游仆虫无性生殖周期中,新口围带发育时老口围带的更新、新波动膜原基的发生、棘毛原基发生的最早形态和背触毛发生等在其他种游仆虫中未见报道的现象。  相似文献   

19.
Type II restriction endonucleases (REs) are widely used tools in molecular biology, biotechnology and diagnostics. Efforts to generate new specificities by structure-guided design and random mutagenesis have been unsuccessful so far. We have developed a new procedure called the methylation activity-based selection (MABS) for generating REs with a new specificity. MABS uses a unique property of bifunctional type II REs to methylate DNA targets they recognize. The procedure includes three steps: (1) conversion of a bifunctional RE into a monofunctional DNA-modifying enzyme by cleavage center disruption; (2) mutagenesis and selection of mutants with altered DNA modification specificity based on their ability to protect predetermined DNA targets; (3) reconstitution of the cleavage center's wild-type structure. The efficiency of the MABS technique was demonstrated by altering the sequence specificity of the bifunctional RE Eco57I from 5'-CTGAAG to 5'-CTGRAG, and thus generating the mutant restriction endonuclease (and DNA methyltransferase) of a specificity not known before. This study provides evidence that MABS is a promising technique for generation of REs with new specificities.  相似文献   

20.
Four herds of pony mares, each consisting of a stallion and six mares, were used to characterize the nature of herding by the stallion and the factors that induced the herding behavior. Herding behaviors were compared among four successive treatments (six mares alone, stallion added, two new mares added, and entire herd moved to a new pasture). A new treatment was initiated every 7 days and behavior was studied for 5 consecutive days (Days 1-5) for each treatment. Observations were made every 10 min during a 2-h period for each day. The extent of herding was quantitated by the mean distances between mares. The extent of snaking (herding with the head and neck extended and ears held back) was scored 0, 1, 2, or 3 (nil, minimal, intermediate, and maximal, respectively). The mean distance among the original mares on Day 1 when the mares were alone was 5.0 mare lengths and was reduced (P < 0.05) to 1.9 mare lengths when the stallion was added. The mean distance among the original mares of an established stallion/mare herd (3.8 mare lengths) was reduced (P < 0.05) on the day the herd was moved to a new pasture (1.9 mare lengths), similar to the effect of the introduction of the stallion. Scores for the extent of snaking, as well as the extent of herding, were highest (P < 0.05) on Day 1 when the stallion was added or the stallion/mare herd was moved to a new pasture. The extent of herding and snaking decreased (P < 0.05) by Day 2 and was seen only occasionally on Days 3-5. The addition of new mares to the herd did not induce herding of the original mares. However, the new mares maintained mean distances of 8-12 mare lengths from the original mares, resulting primarily from chasing by the stallion. By Day 4, the distances between the new and original mares were not different (P > 0.05) from the distances among the original mares.  相似文献   

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