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  • 1
    Electronic Resource
    Electronic Resource
    Structure of a liquid crystal of 4-cyano-4′-n-octyloxybiphenyl (2000)
    Springer
    Crystallography reports 45 (2000), S. 98-102 
    Details
    ISSN: 1063-7745
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The structure of a liquid crystal of 4-cyano-4′-n-octyloxybiphenyl (C21H25NO) is determined by X-ray diffraction analysis. The compound crystallizes in the triclinic crystal system with unit cell parameters a = 7.322(1) Å, b = 12.693(3) Å, c = 20.393(2) Å, α = 92.45(1)°, β = 99.96(1)°, γ = 99.35(2)°, and space group $$P\bar 1$$ . The structure is solved by the direct method and refined to R = 0.057. Two independent molecules are located in the asymmetric unit. No short intermolecular contacts are observed in the crystal packing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.171143
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  • 2
    Electronic Resource
    Electronic Resource
    X-ray structure analysis of 5N-ethyl-8-carboxy-9-oxo-11-methyl-pyrido[2,1-b]quinazoline (2000)
    Springer
    Crystallography reports 45 (2000), S. 611-614 
    Details
    ISSN: 1063-7745
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal structure of 5N-ethyl-8-carboxy-9-oxo-11-methyl-pyrido[2,1-b]quinazoline (C16H16N2O3) has been determined by X-ray diffraction analysis. The compound crystallizes in the monoclinic crystal system (space group P21/c) with the unit cell parameters a = 9.775(1) Å, b = 15.868(1) Å, c = 9.799(1) Å, β = 113.50(1)°, Z = 4. The benzene ring is planar, the pyrimidine ring exists in 11β-sofa conformation, and the pyridone ring deviates slightly from planarity. The crystal packing exhibits intra-and intermolecular interactions of the O-H⋯O, C-H⋯O, and C-H⋯N types.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1306571
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  • 3
    Electronic Resource
    Electronic Resource
    Crystal structure of 5α-cholest-6-one (2000)
    Springer
    Crystallography reports 45 (2000), S. 785-788 
    Details
    ISSN: 1063-7745
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal and molecular structure of the steroid 5α-cholest-6-one has been determined by X-ray diffraction analysis. The compound crystallizes in space group P21 with the unit cell parameters a = 10.575(1) Å, b = 7.698(1) Å, c = 15.284(2) Å, β= 99.34(1)°, V = 1227.72 Å3, Z = 2, and R = 0.054 for 1634 observed reflections. The six-membered rings (A, B, and C) have the chair conformations, whereas the five-membered ring Dis intermediate between 13β-envelope and 13β-14α half-chair. All the rings of the steroid skeleton are trans connected. The molecules are linked together by the intermolecular C-H⋯O hydrogen bonds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1312921
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  • 4
    Electronic Resource
    Electronic Resource
    Identification of stable maintainer and fertility restorer lines for ‘Polima’ CMS in Brassica campestris (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: ‘Polima’ cytoplasmic male sterility (CMS) was transferred from ‘Polima’ Brassica napus ‘ISN 706’to five different cultivars of Brassica campestris (‘Pusa kalyani’, ‘Pant toria’, ‘Candle’, ‘Tobin’ and ‘ATC 94211′) by repeated backcrossing. It was observed that, while ‘Polima’ CMS manifested complete and stable male sterility in the nuclear backgrounds of ‘Pusa kalyani’, ‘Pant toria’, and ‘Tobin’, the cultivars ‘Candle’ and ‘ATC 94211’possessed the restorer gene for this CMS in the heterozygous condition. An analysis of F1 and F2 generations of ‘Polima’‘Pusa kalyani’בCandle’ and ‘Polima’‘Pusa kalyani’בATC 94211’ revealed that restoration is controlled by a single dominant gene. Identification of stable maintainers and restorers of ‘Polima’ CMS could facilitate the development of hybrid varieties in B. campestris.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00430.x
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  • 5
    Electronic Resource
    Electronic Resource
    Partly fertile interspecific hybrid between a black gram × green gram derivative and an adzuki bean (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 121 (2002), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A true-breeding black gram (Vigna mungo) × green gram (Vigna radiata) derivative was reciprocally crossed with adzuki bean, Vigna angularis. Pollinated pistils were treated with gibberellic acid (GA3) (70 p.p.m.) 24 and 48 h after pollination. One fertile pod containing two hybrid seeds was obtained, when V. angularis was used as the male parent. One of these seeds germinated and a partly fertile interspecific hybrid was obtained. Its hybridity was confirmed at the seedling stage based on the presence of the green epicotyl colour of the adzuki bean. Pubescence of epicotyl, stem, leaf margins and pod, and the colour of the mature pod, characteristics of the black gram × green gram derivative, were also expressed in the hybrid. In addition, the hybrid exhibited two novel traits — the presence of racemose inflorescence and plant regeneration ability — not present in the parents. The study of this hybrid and four offspring revealed that green epicotyl colour of adzuki bean, and the pubescence of stem and leaf margins of the black gram × green gram derivatives were dominantly inherited traits. Colours of epicotyl and stem bases were found to be linked.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2002.00675.x
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  • 6
    Electronic Resource
    Electronic Resource
    Resynthesis of Brassica juncea through interspecific crosses between B. rapa and B. nigra (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 123 (2004), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The objective of this study was to broaden the genetic base in oleiferous Brassica juncea by resynthesis, using 10 diverse parental lines of oleiferous B. rapa and two lines of B. nigra of both Indian and exotic origin. Out of 14 crosses attempted using B. rapa as the female parent, eight were successful. Embryo rescue was necessary to obtain interspecific plants. A total of 29 fertile interspecific plants were obtained after colchicine treatment. In the S2 generation, the expression of component characters in the majority of the resynthesized plants showed a negative trend. The resynthesized B. juncea lines are being maintained through repeated selfing and selection at each generation for desirable plant types. This process will continue till the progeny lines of the desirable plants achieve uniformity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2003.00933.x
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  • 7
    Electronic Resource
    Electronic Resource
    Genetic analysis of total glucosinolate in crosses involving a high glucosinolate Indian variety and a low glucosinolate line of Brassica juncea (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 121 (2002), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Analysis of the glucosinolate content and composition by high-pressure liquid chromatography indicated that varieties of Brassica juncea bred and grown in India have a high glucosinolate content characterized by the presence of 2-propenyl (allyl) and 3-butenyl as the major and 4-pentenyl as the minor fractions. In contrast, the B. juncea germplasm from other countries is characterized by the presence of 2-propenyl as the major glucosinolate fraction, trace amounts of 3-butenyl and a total lack of the 4-pentenyl types. In order to transfer the low glucosinolate trait to Indian B. juncea, the inheritance of total glucosinolates was investigated using doubled haploid (DH) populations derived from F1 (DH1) and BC1 (BC1DH) of a cross between ‘Varuna’ (the most widely cultivated high glucosinolate variety of India) and ‘Heera’ (a non-allyl type low glucosinolate line). A total of 752 DH1 and 1263 BC1DH gave rise to seven and 11 low glucosinolate (containing less than 18 μmol/g seed) individuals, respectively. On the basis of the frequency of the low glucosinolate individuals, the total glucosinolate was found to be under the control of seven genes. There was presence of both allyl and non-allyl types in DH1 and BC1DH low-glucosinolate individuals and absence of 3-butenyl glucosinolate in some of the BC1DH low glucosinolate individuals, indicating segregation for these fractions in the population. The size of the segregating DH population proved to be crucial for precise determination of the number of genes controlling the trait. Because of the large number of genes involved, incorporation of low glucosinolate trait in Indian B. juncea should be approached through doubled haploid (DH) breeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2002.00747.x
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  • 8
    Electronic Resource
    Electronic Resource
    Molecular marker analysis of kernel size and shape in bread wheat (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 122 (2003), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The economic value of wheat grain is determined by the kernel morphology which is an important parameter for manufacturing different food products requiring specific grain characteristics. Although kernel size and shape have emerged as important breeding objectives, not much information is available about the number or location of associated gene(s)/quantitative trait loci. In the present study, a recombinant inbred line population of 106 plants (F7) was phenotyped for four traits, namely kernel length, width, weight and factor form density (FFD) and genotyped with different polymerase chain reaction-based markers. Transgressive segregants were observed for all the traits and genetic correlation studies showed positive correlations between the majority of the traits. The number of markers associated with each trait ranged from two to nine and the phenotypic contribution by an individual marker ranged from 3.3 to 16.6%. Many of the markers showed linkage to more than one trait. Strategies for improving the wheat grain quality traits and the utility of such markers in marker-assisted selection (MAS) efforts are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2003.00896.x
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  • 9
    Electronic Resource
    Electronic Resource
    Synthesis of somatic hybrids (RCBB) by fusing heat-tolerant Raphanus sativus (RR) and Brassica oleracea (CC) with Brassica nigra (BB) (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 121 (2002), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Brassica carinata (BBCC), a potential oilseed crop for dry land agriculture, is sensitive to high temperatures during germination and early stages of growth, which thereby restricts the possibility of using the residual soil moisture available after the rainy season for its cultivation. To overcome this problem, a three-genome hybrid, RCBB, was synthesized using Raphanus sativus (RR) and Brassica oleracea (CC) as donor sources for the desired heat tolerance. Protoplasts of RC hybrids obtained through sexual crosses between R. sativus (female) and B. oleracea (male) were fused with protoplasts of Brassica nigra (BB) to produce RCBB somatic hybrids. The hybrid colonies regenerated with an average frequency of 7.6%. Twelve out of 36 hybrids grown to maturity were characterized for their nuclear and organelle genomes. While all the hybrids showed the presence of B. nigra chloroplasts, 10 of the hybrids showed B. nigra-specific mitochondria and two had Raphanus-spedfic mitochondria. The somatic hybrids could be backcrossed to B. carinata.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2002.00681.x
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  • 10
    Electronic Resource
    Electronic Resource
    Intraspecific genetic variability analysis of Neovossia indica causing Karnal bunt of wheat using repetitive elements (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 569-575 
    Details
    ISSN: 1432-2242
    Keywords: Key words Karnal bunt ; Repetitive elements ; Genome diversity ; RFLP
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Neovossia indica (Tilletia indica), causing Karnal bunt of wheat, affects major wheat growing regions all over the world. Karnal bunt ranks as one of the major diseases of wheat causing quality losses and monetary losses due to international quarantine regulations. The present work is the first report of a genetic diversity analysis of Indian isolates of N. indica. A library of N. indica isolate Ni7 was constructed in a λZAPII system, and three repetitive elements were identified for molecular analysis. These repetitive elements generated complex hybridization profiles producing fingerprint patterns of all seven isolates. Copy-number estimation of these three elements, pNiR9, pNiR12 and pNiR16, indicated the presence of 32, 61 and 64 copies, respectively. Cluster analysis based on hybridization patterns grouped together moderately virulent isolates Ni1, Ni7 and Ni8, thus suggesting a positive correlation between virulence typing and cluster analysis based on molecular data. Variability analysis of N. indica isolates will aid in checking new resistant sources in host germplasm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050075
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