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  • 1
    Electronic Resource
    Electronic Resource
    Similarity solutions for the type D fluid plates in 5-D flat space (1996)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 37 (1996), S. 1962-1971 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: All the similarity solutions, describing the Petrov-type D, plane symmetric perfect fluid distributions of imbedding class one, have been derived by using the Lie continuous point group similarity transformation method. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.531487
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  • 2
    Electronic Resource
    Electronic Resource
    Development of non-narcotic (opiumless and alkaloid-free) opium poppy, Papaver somniferum (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 118 (1999), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A mutation breeding programme using gamma rays and ethyl methane sulphonate (EMS) was carried out for genetic conversion of narcotic ‘opium poppy’ into non-narcotic ‘seed poppy’. Two families contained 31 latexless (opiumless) and 23 partial latex-bearing plants which were identified in the M2 and confirmed in the M3 generations by the ‘ray-pluck’ method. Thin-layer chromatography (TLC)-densitometry of powdered capsule hulls (straw) from 22 representative plants also revealed that none of the five opium alkaloids (morphine, codeine, thebaine, papaverine and narcotine) was present in the straw. Six plants also possessed high seed yield (4.0–5.66 g/capsule vs. 3.39 g for control) and seven had a high seed oil content (50.7-53.5%). The best mutant genotype, LL-34 of the family C1-Comb-113-2, with 5.66 g/capsule seeds containing 52.6% oil was designated as cv. ‘Sujata’. This, perhaps the world's first opiumless and alkaloid-free seed poppy cultivar, offers a cheap and permanent (fundamental) solution to the global problem of opium-linked social abuse. Simultaneously, it serves as a safe and potential food crop with protein-rich seeds and healthy unsaturated seed oil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.1999.00419.x
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  • 3
    Electronic Resource
    Electronic Resource
    Productivity and Cytogenetic Analysis of an Unbranched Mutant in Hyoscyamus niger L. (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 97 (1986), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: An unbranched mutant (Ub) with marginal arrangement of large leaves substantially altered floral and reproductive features in H. niger was isolated in M2. It bred true for all mutant characteristics in M2 generation. Appearance of restricted branching (Rb mutant) in some M3 families seems 10 be a transient phase. Erect growth habit Coupled with non-overlapping leaf-disposition is useful for high crop density to obtain higher biomass field and, in turn, more crude drug production per unit area. Improvement in alkaloid content is an additional advantage augmenting its economic viability. Seed setting was, however. Poor due to pollen-polymorphism accruing from desynapsis and lack of organized alignment of chromosomes at Ml and subsequent abnormal disjunction at Al.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1986.tb01082.x
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  • 4
    Electronic Resource
    Electronic Resource
    Genetic improvement of pyrethrum (1989)
    Springer
    Theoretical and applied genetics 78 (1989), S. 841-846 
    Details
    ISSN: 1432-2242
    Keywords: Chrysanthemum cinerariefolium ; Selective divergence ; Heterosis ; Hybrid clones ; Crop improvement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Pyrethrum (Chrysanthemum cinerariefolium), an important paramedicinal plant is a potential source of pyrethrins, which have a long history of safe uses against mosquito larvae — a carrier of malarial parasite. It was introduced in India from Kenya in 1931. Considerable genetic diversity has been generated over the years. Repeated clonal selection could lead to isolation of a number of divergent clones representing selective divergence. Planned hybridization among some of the chosen clones could further enlarge the spectrum of variation as measured by multivariate analyses (D2-statistic and canonical analysis). The resulting hybrids manifested a variable degree of heterosis which was found to be, by and large, positively associated with the degree of divergence between the two constituent parents of a hybrid. However, the choice of the potential hybrid clone(s) for commercial exploitation was most viable when parents for hybridization were short-listed on the basis of parental divergence coupled essentially with per se performance for specific traits. The latter criterion assumes greater significance since low x low or medium x low parental hybrids also tended to register high heterosis for both the pyrethrins content and yield. Four hybrids: 234xL, 8xL, 326×395 and 319xL were identified to be the most promising for clonal selection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00266668
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  • 5
    Electronic Resource
    Electronic Resource
    Radiation-induced hyperdiploidy inHyoscyamus niger L (1985)
    Springer
    Cellular and molecular life sciences 41 (1985), S. 1079-1080 
    Details
    ISSN: 1420-9071
    Keywords: Hyperdiploid plant ; Hyoscyamus niger ; radiation-induced mutant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A hyperdiploid plant type, approaching the triploid chromosome number, and representing possibly a high level of tetrasomy, was recorded in the progeny of a gamma ray-induced unbranched desynaptic mutant in the M4 generation. Its meiotic behavior and its possible importance for deriving diverse hyperdiploid lines from desynaptic mutants are outlined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01952153
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  • 6
    Electronic Resource
    Electronic Resource
    Induced polygenic changes occurring simultaneously with major gene changes in black henbane (Hyoscyamus niger L.) (1992)
    Springer
    Theoretical and applied genetics 85 (1992), S. 445-450 
    Details
    ISSN: 1432-2242
    Keywords: Hyoscyamus niger ; Macromutants ; Polygenic changes ; gca effects ; Average heterosis ; Mutant heterosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two macromutants [unbranched (Ub) and restricted branched (Rb)], one point mutation [yellow flowerd (‘Ada’)] and two flowering variants (early and late) were isolated in the M2 generation of gammairradiated progenies of black henbane (H. niger) — a medicinal plant belonging to family Solanaceae. These major gene changes were coupled with simultaneous changes in several polygenic systems conditioning continuous variation for flowering time, plant height, numbers of shoots and leaves, biomass and crude drug content. Such quantitative variation in qualitative mutants were measured for both per se means and cross-bred performance in terms of: (1) shifts in univariate means, (2) changes in pooled divergence, (3) alterations in gca effects, and (4) changes in heterotic capacity. The mutants were significantly divergent from the parental base for all the six metric traits, both individually as well as collectively. Divergence among mutants was wider (D2 = 1491 to 11 469) than that for mutants versus source parent (D2 = 117 to 7120). Conspicuous alterations in both the nature and the magnitude of the gca effects associated with all mutants, except L-2013 (late flowering), relative to the parental base were observed for all of the metric traits examined (gca ∼- per se means). Similarly, the mutants manifested greater heterotic potential than the parental base. This is even more strongly reflected in mutant x mutant hybrids for all of the characters. The amount of economic heterosis for diverse traits followed the pattern: crude drug 〉 biomass 〉 flowering time ∼- plant height 〉 number of shoots ∼- number of leaves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222326
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  • 7
    Electronic Resource
    Electronic Resource
    Non-static non-conformally flat fluid plates of embedding class one (1996)
    Springer
    General relativity and gravitation 28 (1996), S. 1447-1453 
    Details
    ISSN: 1572-9532
    Keywords: Solutions with acceleration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the present article four non-static perfect fluid solutions have been derived by considering a plane symmetric metric of embedding class one. Out of the solutions so obtained two solutions possess an acceleration free velocity vector field while the other two have flow with acceleration. As far as the authors are aware the solutions with non-vanishing acceleration are new.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02113774
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  • 8
    Electronic Resource
    Electronic Resource
    Changes in genetic background under selection influencing the expression of self-incompatibility in Brassica campestris var. brown sarson (1979)
    Springer
    Genetica 51 (1979), S. 45-53 
    Details
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00139497
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  • 9
    Electronic Resource
    Electronic Resource
    Potential of gamma radiation enhancing the biosynthesis of tropane alkaloids in black henbane (Hyoscyamus niger L.) (1989)
    Springer
    Euphytica 40 (1989), S. 253-258 
    Details
    ISSN: 1573-5060
    Keywords: Hyoscyamus niger ; black henbane ; mutation breeding ; genetic improvement ; tropane alkaloids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A productive yellow flowered mutant with high tropane alkaloid content was isolated in the M2 generation of gamma irradiated (Co60 at 40 kr) progenies ofHyoscyamus niger. Mutant progenies, on an average, were capable of synthetising more than twice crude alkaloid (0.147% to 0.221%) in M3 through M6 generations compared to the parental control (0.065 to 0.106%). In pilot scale trial (M7), two elite lines, Y-15 and Y-17 were found to contain 0.390% and 0.318% crude drug in contrast to 0.211% in an improved inbred used as control. However, owing to conducive plant morphology, Y-17 registered high yield of dry biomass, hence gave more than double yield of crude drug than the improved control (inbred) (23 kg/ha against 11 kg/ha). Also being superior in hyoscyamine and hyoscine yields, it was redesignated as var.Aela, and released for commercial cultivation in India, thus signifying the efficiency of radiation breeding for crop improvement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024520
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