SECTION ONE
1. Selection under self-fertilization
Early observations on selection, the
pure line theory, the genetics of Johannsen's experiment, sources
of genetic variation.
2. Genetic consequences of hybridization
The gene-character relationship, epistasis,
modifying factors, penetrance and expressivity, threshold
effects, environmental effects on
gene expression, segregation and recombination of genes,
the
genetic composition of populations
derived from hybrids.
3. Nature and goals of Plant Breeding and patterns of evolution of cultivated species.
Natural and artificial selection, Mendelian variation, interpsecific hybridization, Polyploidy.
4. Plant Introduction and Domestication
Commercial varieties originating
from introductions, centres of origin of cultivated plants,
maintenance and use of
world collections, Domestication.
SECTION TWO: BREEDING METHODS WITH SELF-POLLINATED CROPS
1. Pure-line breeding and Mass Selection: pure-line breeding;
varieties developed by pure-line selection; mass selection.
2. Pedigree method of plant breeding
choice of parents; aids to selection;
handling the hybrid materials; final evaluation; early-generation
testing; selection among crosses;
selection within crosses; general features.
3. Bulk-population breeding: natural selection in bulk
populations; theory of survival in
competition; natural survival in varietal mixtures; survival in hybrid
populations; survival of genes in
populations; yield and appearance of bulk hybrid populations;
progenies isolated from bulk populations;
artificial selection in bulk populations; duration of the bulking
period.
4. Backcross breeding: the genetic basis of backcross
breeding;
selecting the recurrent parent; maintenance
of the character under transfer; the number of
backcrosses; backcross breeding procedures;
backcross breeding in wheat cultivars; improvement
by steps, applications to cross-pollinated
crops; general features.
SECTION THREE BREEDING METHODS WITH CROSS-POLLINATED CROPS
1. Selection in cross-pollinated crops: mass selection; progeny
selection and line breeding; varieties
developed by selection; long-term mass selection improvements in
sugar beet, maize and alfalfa.
2. Hybrid varieties: operations in producing hybrid maize;
developing inbred lines; visual selection
during inbreeding; the evaluation of inbred lines; predicting
performance in hybrid combinations,
time of testing inbred lines, hybrid varieties in crops other than
maize.
3. Recurrent selection: general considerations; simple recurrent
selection; recurrent selection for
general combining ability; recurrent selection for specific combining
ability; reciprocal recurrent selection.
4. Synthetic varieties theoretical considerations; factors
influencing the performance of synthetic varieties
in maize;
synthetic varieties in forage crops; relationship of tests for combining ability.
SECTION FOUR: SPECIAL BREEDING STRAGEGIES
1. Breeding for disease and pest resistance
2. Distribution and maintenance of improved varieties.
SECTION FIVE: PLANT BREBDING SEMINARS
1. The history, development and success of plant breeding.
2. The conservation of genetic resources.
Other Menus:
Agricultural Economics
Agricultural Engineering
Animal Science
Soil Sciences