XL-R Botany
Section 1: Plant Systematics
Major systems of classification, plant groups, phylogenetic relationships and
molecular systematics.
Section 2: Plant Anatomy:
Plant cell structure and its components; cell wall and membranes; organization,
organelles, cytoskeleton, anatomy of root, stem and leaves, floral parts, embryo
and young seedlings, meristems, vascular system, their ontogeny, structure and
functions, secondary growth in plants and stellar organization.
Section 3: Morphogenesis & Development
Cell cycle, cell division, life cycle of an angiosperm, pollination, fertilization,
embryogenesis, seed formation, seed storage proteins, seed dormancy and
germination.
Concept of cellular totipotency, clonal propagation; organogenesis and somatic
embryogenesis, artificial seed, somaclonal variation, secondary metabolism in plant
cell culture, embryo culture, in vitro fertilization.
Section 4: Physiology and Biochemistry
Plant water relations, transport of minerals and solutes, stress physiology, stomatal
physiology, signal transduction, N2 metabolism, photosynthesis, photorespiration;
respiration, Flowering: photoperiodism and vernalization, biochemical mechanisms
involved in flowering; molecular mechanism of senencensce and aging,
biosynthesis, mechanism of action and physiological effects of plant growth
regulators, structure and function of biomolecules, (proteins, carbohydrates, lipids,
nucleic acid), enzyme kinetics.
Section 5: Genetics
Principles of Mendelian inheritance, linkage, recombination, genetic mapping;
extrachromosomal inheritance; prokaryotic and eukaryotic genome organization,
regulation of gene expression, gene mutation and repair, chromosomal aberrations
(numerical and structural), transposons.
Section 6: Plant Breeding and Genetic Modification
Principles, methods – selection, hybridization, heterosis; male sterility, genetic maps
and molecular markers, sporophytic and gametophytic self incompability,
haploidy, triploidy, somatic cell hybridization, marker-assisted selection, gene
transfer methods viz. direct and vector-mediated, plastid transformation, transgenic
plants and their application in agriculture, molecular pharming, plantibodies.
Section 7: Economic Botany
A general account of economically and medicinally important plants- cereals,
pulses, plants yielding fibers, timber, sugar, beverages, oils, rubber, pigments, dyes,
gums, drugs and narcotics. Economic importance of algae, fungi, lichen and
bacteria.
Section 8: Plant Pathology
Nature and classification of plant diseases, diseases of important crops caused by
fungi, bacteria,nematodes and viruses, and their control measures, mechanism(s)
of pathogenesis and resistance, molecular detection of pathogens; plant-microbe
beneficial interactions.
Section 9: Ecology and Environment
Ecosystems – types, dynamics, degradation, ecological succession; food chains
and energy flow; vegetation types of the world, pollution and global warming,
speciation and extinction, conservation strategies, cryopreservation,
phytoremediation.
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