Showing papers on "Nigella damascena published in 2003"
TL;DR: The chemical composition of the essential oil of Nigella damascena L. seeds, collected from fruiting plants in their natural habitat, was examined in comparison with commercial seeds and the alkaloids were damascenine and methyl 2-amino-3-methoxy benzoate, the latter being detected for the first time in this species.
Abstract: The chemical composition of the essential oil of Nigella damascena L. seeds, collected from fruiting plants in their natural habitat, was examined in comparison with commercial seeds. Twenty-eight compounds were identified in wild seeds by GC/MS: 10 sesquiterpene hydrocarbons (93.8%), two alkaloids (0.3%) and three monoterpenes in trace amounts. Twenty-six compounds were identified in commercial seeds by GC/MS: 15 sesquiterpene hydrocarbons (90.4%), two alkaloids (3.3%) and nine monoterpenes in trace amounts. The alkaloids were damascenine and methyl 2-amino-3-methoxy benzoate, the latter being detected for the first time in this species.
20 citations
TL;DR: Cytomorphological studies including scanning electron microscopy of the seed surfaces and seed protein characterization have been performed to ascertain interrelationship between 2 species of Nigella (Ranunculaceae) namely, Nigella sativa L. sativa and Nigella damascena and the results obtained have been discussed.
Abstract: Cytomorphological studies including scanning electron microscopy of the seed surfaces and seed protein characterization have been performed to ascertain interrelationship between 2 species of Nigella (Ranunculaceae) namely, Nigella sativa L. (black cumin: spice of commerce) and Nigella damascena L. (love-in-a-mist: ornamental) and the results obtained have been discussed. Further, in this investigation it has also been noted that a line of N. damascena obtained from Royal Botanic Garden, Kew. London possessed unique ornamental phenotype and yielded good number of viable seeds per plant which were with high protein content.
6 citations
TL;DR: Two aberrant plants possessing meiotic instability in the microsporocytes were identified from the mutant population of Nigella damascena L. (commonly known as love-in-a-mist) and were found to be associated with defects in female gametophytic tissues.
Abstract: Two aberrant (plant type I and II) plants possessing meiotic instability in the microsporocytes were identified from the mutant population of Nigella damascena L. (commonly known as love-in-a-mist; family: Ranunculaceae). Plant type I (screened from 10 kR M1 generation) was a weak plant with small sized flowers and shrunken anthers devoid of any pollen grains at anthesis. The plant dried up at blooming stage. Male meiotic study revealed the occurrence of condensed and compact chromatin masses of variable sizes and numbers (12 to 13 mostly and 3 to 5 rarely) and occasional formation of bivalent and univalent like configurations in the meiocytes. Plant type II (isolated at M2 from the M1 progeny of 0.25% EMS treatment) was a small flower mutant (SF2), the morphological nature and chromosomal behaviour of which have been compared to control and SF1 (small flower mutant arising in different M2 line). SF1 showed similar morphological behaviour as SF2 but demonstrated normal meiosis like control. SF2 manifested hypoploid (2n 12) chromosome numbers at MI and AI and prevalence of unstable meiosis in the form of asynaptic and desynaptic chromosome behaviour, differential condensation of chromosomes, persistent nucleolar body and occasional multivalent formation in first and mid-flowering phases. SF2 showed more diploid PMCs at late flowering phase. SF2 was also found to be associated with defects in female gametophytic tissues. Possible mode of gene action in the plant types has been predicted.
3 citations