I= BIOSYSTEMATIC STUDIES OF GENTIANA L. (S.L.) FROM PAKISTAN AND KASHMIR
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Title of Thesis
BIOSYSTEMATIC STUDIES OF GENTIANA L. (S.L.) FROM PAKISTAN AND KASHMIR

Author(s)
Saood Omer
Institute/University/Department Details
University of Karachi/ Department of Botany
Session
1991
Subject
Botany
Number of Pages
419
Keywords (Extracted from title, table of contents and abstract of thesis)
pollen morphology, GENTIANA L. (S.L.), Ciminalis Adans, Gentianodes Love & Love, Qaisera Omer; Aliopsis Omer & Qaiser, Gentianopsis ma; Aloitis Rafin; Comastoma Toyok; Jaeschkea Kurz; Kurramiana Omer and Qaiser, Ciminalis bal tistanica Omer; Aloitis smithii Omer; comastoma pseudopulmonarium Omer, Gentianodes marginata (D.Don) Omer et al. Var. Scabromarginata Omer, Ciminalis type; Aliopsis type; Comastoma type; Gentianopsis type; Aloitis type, Jaeschkea type

Abstract
A study of the genus Gentiana L. (s.l.) from Pakistan and Kashmir. A synthetic approach is adopted by application of palynology, seed morphology, chemistry, phytogeography and numerical analysis

As a result of the present studies, nine genera are recognized from Pakistan and Kashmir: Ciminalis Adans: Gentianodes Love & Love: Qaisera Omer; Aliopsis Omer & Qaiser; Gentianopsis ma; Aloitis Rafin; Comastoma Toyok; Jaeschkea Kurz; Kurramiana Omer and Qaiser. Ciminalis bal tistanica Omer; Aloitis smithii Omer; comastoma pseudopulmonarium Omer: Gentianodes marginata (D.Don) Omer et al. var. scabromarginata Omer have been recognized as new taxa. Following new combinations proposed are; Ciminalis karelinii (Gusn.) Omer; C.harwanensis (G. Singh) Omer; C.capitata (Buch.-Ham.ex D.Don) Omer; Gentianodes clarkei (Kusn.) Omer; Gentianopsis vvedenskyi (Grossh.) Omer; Aloitis anurea (Bunge) Omer. Ciminalis riparia (Kar. & Kir.) Zuyev Comastoma pulmonarium (Turez.)Toyok. Are the two taxa recorded for the first time from Pakistan

The pollen morphological studies revealed the existence of four groups viz., scabrate, striate reticulate and striato-reticulate. Of these striato-reticulate group was the largest group thus accommodating more than 50% taxa. Maximum variation was encountered in the genus Gentianodes love & Love, where three different types of pollen grains are the taxa. The genus Qaisera Omer differs from the related genera (Ciminalis Adans. And Gentianodes Love & Love) on the basis of pollen morphology

Six different groups viz., Ciminalis type; Aliopsis type; Comastoma type; Gentianopsis type; Aloitis type and Jaeschkea type recognized on the basis of surface pattern and seed morphology are proposed after the principle genera

Analysis of the flavanoids of eight genera viz., Ciminalis Adans; Gentianodes Love & Love, Qaisera Omer, Aliopsis Omer & Qaiser; Gentianopsis Ma; Aloitis Rafin.; Comastoma Toyok. And Jaeschkea Kurz indicates three groups on the basis of presence and absence of different flavanoids. Percentage of flavones was higher than flavanols in all the eight genera. Maximum number of compounds are encountered in Gentianodes Love & Love (12 in number), with minimum number of the compounds were present in Jaeschkea Kurz (3 in number). The non-plicate group exhibits both apigenin and luteolin (with the exception of Jaeschkea Kurz) and only apigenin was found absent entirely from plicate group

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6421.85 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
47.79 KB
2 1 Introduction 4
19.17 KB
3 2 Seed Morphology 6
777.89 KB
4 3 Palynology 50
914.29 KB
5 4 Phytogeography 95
88.98 KB
6 5 Phytochemistry 105
164.77 KB
7 6 General Morphology 121
221.74 KB
8 7 The Concepts Of Genera 129
71.69 KB
9 8 Floristic Account And Taxonomy 135
3427.03 KB
10 9 Numerical Analysis 321
108.3 KB
11 10 Phylogenetic Relationships Of The Genera 334
56.05 KB
12 11 General Discussion 340
117.1 KB
13 12 Acknowledgments 350
25.06 KB
14 13 Appendices 352
63.88 KB
15 14 References 361
210.49 KB
16 15 Addendum 377
554.93 KB
17 16 Index 413
89.42 KB