Topic
Nigella damascena
About: Nigella damascena is a research topic. Over the lifetime, 121 publications have been published within this topic receiving 1390 citations. The topic is also known as: love-in-a-mist & Devil-in-a-bush.
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TL;DR: Karyotyping through Image Analyzing System in two species of Nigella revealed 4 (N. sativa and N. damascena) morphologically distinct chromosome types which formed graded karyotypes which were symmetric in nature.
Abstract: Karyotyping through Image Analyzing System in two species of Nigella (family: Ranunculaceae) revealed 4 (N. sativa: 2n=12=4A+4B+2C+2D; karyotype formula: 2L1smsc+2L1m+2Lsm+2Lm+2Mm+2St) and 3 (N. damascena: 2n=12=6B+4C+2D; karyotype formula: 4Lmsc+2Lm+4Mm+2St) morphologically distinct chromosome types (L1=very long ≥15.0 μm, L=long 13.0 to <15.0 μm, M=medium 7.0 to <13.0 μm, S=short <7.0 μm, m=metacentric, sm=sub-metacentric, t=telocentric and sc=satellites). The somatic chromosome complements in the species formed graded karyotypes which were symmetric in nature (TF%: N. sativa 42.90, N. damascena 40.62). Total haploid chromatin length was noted to be 78.622 μm in N. sativa and 70.136 μm in N. damascena.
8 citations
TL;DR: Gamma irradiation (5, 10, 15 and 20 kR) to Nigella damascena L. seeds induced three viable translocation heterozygotes (P-3 and P-15 from 5 kR and p-25 from 10 kR), which on selfing yielded progeny heterozygote in subsequent generations (R2, R3 and R4) exhibiting the formation of either a ring or a chain of four chromosomes in 14.8-54.6% meiocytes as discussed by the authors.
Abstract: Gamma irradiations (5, 10, 15 and 20 kR) to Nigella damascena L. (love-in-a-mist; family: Ranunculaceae) seeds (moisture content: 8.7%) induced three viable translocation heterozygotes (P-3 and P-15 from 5 kR and P-25 from 10 kR) which on selfing yielded progeny heterozygotes in subsequent generations (R2, R3 and R4; however, P-15 could only be assessed upto R2 generation) exhibiting the formation of either a ring or a chain of four chromosomes in 14.8–54.6% meiocytes. Mean quadrivalent frequency per cell was assessed to be 0.40–0.66 in P-3, 0.43–0.64 in P-15 and 0.15–0.47 in P-25. Configuration and orientation of the multiples in the heterozygotes assessed over the generations indicated a possible genetic control over the mechanism. Normal 6/6 separation of chromosomes at AI (55.86–100.00%) of the heterozygotes did not correlate significantly (r = 0.29,27 DF) with pollen fertility (6.98–46.38%). Pollen fertility showed negative and insignificant correlation (r = -0.20,27 DF) with seed set per pla...
7 citations
TL;DR: The fatty acid composition of aquilegia seed lipids was a little changed by the germination, and the structures of the 5-olefinic acids were established by the comparison of the retention data in GLC of the cis-5 and trans-5 olefinic acid and their partially hydrogenated products on SP 2300 and SP 2340 liquid phases, and 13C-NMR spectra of them.
Abstract: Open-tubular gas chromatographic analysis (GLC) of fatty acids from the seed lipids of Aquilegia vulgaris (I), A. longissima (II), A. hybriba hort (III), Delphinium Ajacis (IV), and Nigella damascena (V) belong to Ranunculaceae have been carried out. The unusual fatty acids found in I, II, and III were trans-5, cis-9, cis-12-octadecatrienoic acid (t5, c9, c12-18 : 3) (neutral lipids 5659%, and polar lipids 3540% in I and II), t5, c9-18 : 2 (0.52.6%), and t5-16 : 1, t5-18 : 1 and t5, c9, c12, c15-18 : 4 (each less than 1%). These unusual acids have not been found in IV and V. The usual acids, 16 : 0, c9-18 : 1 and c9, c12-18 : 2, were found as the major constituents with the minor constituents, 14 : 0, 15 : 0, c7 and c9-16 : 1, 18 : 0, c11-18 : 1, c9, c12, c15-18 : 3, c11-20 : 1 and c11, c14-20 : 2 in common. The structures of the 5-olefinic acids were established by the comparison of the retention data in GLC of the cis-5 and trans-5 olefinic acids and their partially hydrogenated products on SP 2300 and SP 2340 liquid phases, and 13C-NMR spectra of them. The fatty acid composition of aquilegia seed lipids was a little changed by the germination.
7 citations
TL;DR: Four new triterpene glycosides were derived from the air-dried aerial parts of Nigella damascena L. (Ranunculaceae), and the structures were elucidated on the basis of spectroscopic data including 2D NMR spectra and chemical evidence.
Abstract: Four new triterpene glycosides, named nigellosides A, B, C, and D, were from the air-dried aerial parts of Nigella damascena L. (Ranunculaceae), and the structures were elucidated on the basis of spectroscopic data including 2D NMR spectra and chemical evidence. Their chemical structures have been characterized as 3-O-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl gypsogenin 28-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester, 3-O-beta-D-glucopyranosyl-(1-->3)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl gypsogenin 28-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester, 3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranosyl hederagenin 28-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester, and 3-O-beta-D-glucopyranosyl-(1-->3)-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranosyl hederagenin 28-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester.
7 citations
TL;DR: DAMASCENINE is present in the seeds of Nigella damascena L. to the extent of about 0.1–0.3 per cent (dry weight).
Abstract: DAMASCENINE is present in the seeds of Nigella damascena L. to the extent of about 0.1–0.3 per cent (dry weight). The majority of the alkaloid is present in the testas. The seeds of other Nigella species hitherto investigated possess only traces of the base.
7 citations