DESCRIPTION OF COURSES
SST 501 FLORAL BIOLOGY, SEED DEVELOPMENT & MATURATION (2L+1P) I
To refresh the basic knowledge of seed development and structures and apprise students with its relevance to production of quality seed.
Floral types, structure and biology in relation to pollination mechanisms; sporogenesis: micro- sporogenesis and mega-sporogenesis; micro and mega gametogenesis - development of male and female gametes and their structures; effect of environmental factors on floral biology.
Fertilization – embryo sac structure, process, barriers to fertilization, incompatibility and male sterility, factors affecting fertilization.
Embryogenesis - development of typical monocot and dicot embryos; endosperm development, modification of food storage structures with reference to crop plants; different types of embryos, endosperm and cotyledons; development and their structure in representative crop plants with reference to food storage; external and internal features of monocot and dicot seed; seed coat structure and development in representative crop plants.
Apomixis – identification, classification, significance and its utilization in different crops for hybrid seed production; Polyembryony - types and significance; haplontic and diplontic sterility, causes of embryo abortion, embryo rescue and synthetic seeds.
Study of floral biology of monocots and dicots; micro-sporogenesis and mega-sporogenesis; study of pollen grains - pollen morphology, pollen germination and pollen sterility; types monocot and dicot embryos; external and internal structures of monocot and dicot seeds; seed coat structure, preparation of seed albums and identification.