A rapid colorimetric method for screening black currant juices for vitamin C content     

G. R. Andrews 《Euphytica》1979,28(3):751-753

Summary A rapid laboratory method was developed for screening black currant juices for ascorbic acid content in a plant breeding programme.  相似文献   

Reselection of a Pearl Millet Cultivar Utilizing Residual Variability for Downy Mildew Reaction*     

S. D. Singh  P. Singh  D. J. Andrews  B. S. Talukdar  S. B. King 《Plant Breeding》1992,109(1):54-59

‘BJ 104’ was the most widely grown pearl millet hybrid in India until it became susceptible to downy mildew (DM) in 1984—85. Residual variability for resistance was found in both parental lines, 5141 B (maintainer of 5141 A) and J 104, and through four generations of pedigree selection under intense disease pressure in the DM nursery, two lines, IC-MA841 (from 5141 B) and ICMP 84814 (from J 104), were selected resulting in a reconstituted DM resistant hybrid (‘ICMH 84814’) which was equal in yield to the original ‘BJ 104’. The reconstituted hybrid, though phenotypically similar, can be distinguished from “BJ 104” being slightly taller, flowers later, has heavier heads, and 1000-seed weight, but tillers less. A similar exercise was attempted on Tifton 23 B, the female parent of the first widely grown hybrid (‘HB 3’— the male parent was also J 104), but no variability for resistance to DM was found.  相似文献   

A database management system for information retrieval and documentation of experiments for plant breeders     

D. J. Andrews  R. C. Hardwick 《Euphytica》1982,31(2):281-285

Summary An existing database system for seed collections has been augmented by programs providing plans for field experiments, record sheets and adhesive labels for seed packets. Information on accession names and parentage is picked up from the database. At the end of the season information on material seleeted in the trials is automatically added to the database.  相似文献   

Mutations in a human ROBO gene disrupt hindbrain axon pathway crossing and morphogenesis     

Jen JC  Chan WM  Bosley TM  Wan J  Carr JR  Rüb U  Shattuck D  Salamon G  Kudo LC  Ou J  Lin DD  Salih MA  Kansu T  Al Dhalaan H  Al Zayed Z  MacDonald DB  Stigsby B  Plaitakis A  Dretakis EK  Gottlob I  Pieh C  Traboulsi EI  Wang Q  Wang L  Andrews C  Yamada K  Demer JL  Karim S  Alger JR  Geschwind DH  Deller T  Sicotte NL  Nelson SF  Baloh RW  Engle EC 《Science (New York, N.Y.)》2004,304(5676):1509-1513

The mechanisms controlling axon guidance are of fundamental importance in understanding brain development. Growing corticospinal and somatosensory axons cross the midline in the medulla to reach their targets and thus form the basis of contralateral motor control and sensory input. The motor and sensory projections appeared uncrossed in patients with horizontal gaze palsy with progressive scoliosis (HGPPS). In patients affected with HGPPS, we identified mutations in the ROBO3 gene, which shares homology with roundabout genes important in axon guidance in developing Drosophila, zebrafish, and mouse. Like its murine homolog Rig1/Robo3, but unlike other Robo proteins, ROBO3 is required for hindbrain axon midline crossing.  相似文献   

Genetic and fossil evidence for the origin of modern humans   总被引：35，自引：0，他引：35  

C B Stringer  P Andrews 《Science (New York, N.Y.)》1988,239(4845):1263-1268

The origin of living Homo sapiens has once again been the subject of much debate. Genetic data on present human population relationships and data from the Pleistocene fossil hominid record are used to compare two contrasting models for the origin of modern humans. Both genetics and paleontology support a recent African origin for modern humans rather than a long period of multiregional evolution accompanied by gene flow.  相似文献   

THE RELATION BETWEEN AGE AND AREA IN THE DISTRIBUTION OF PLANTS     

Andrews EF 《Science (New York, N.Y.)》1918,47(1206):142-143

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Frozen Mushrooms for Class Study     

Andrews HN 《Science (New York, N.Y.)》1953,118(3064):331-332

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THE AMERICAN INSTITUTE OF ELECTRICAL ENGINEERS     

Andrews WC 《Science (New York, N.Y.)》1901,13(330):655-657

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WHAT CAN BE DONE TO ENHANCE THE VALUE OF THE WORK OF THE BUREAU OF STANDARDS TO THE CHEMICAL INDUSTRIES?     

Andrews L 《Science (New York, N.Y.)》1908,28(718):450-452

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Radioactive Fallout from Bomb Clouds     

Andrews HL 《Science (New York, N.Y.)》1955,122(3167):453-456

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