110 / FIELDS OF INSTRUCTION


HOS 6136-Morphology and Taxonomy of Horticultural Crops
(4) Prereq: BOT 3303 and BOT5225 or equivalent. Morphologi-
cal characteristics of horticultural crops in relation to taxonomic
principles with emphasis on the scientific basis and utility of the
various systematic methods. Offered in spring.
HOS 6201-Breeding Perennial Cultivars (3) Prereq:AGR 3303.
Methods of breeding perennial fruit and ornamental cultivars
using mutations, cell and tissue culture, polyploidy, wide hy-
bridization, and recurrent selection. The conservation and
domestication of wild plants. Offered alternate odd numbered
years in fall.
HOS 6231-Biochemical Genetics of Higher Plants (3) Prereq:
AGR 3303 or PCB 3063 and BCH 4313 or equivalents. Discus-
sion of current evidence bearing on gene function and regulation,
examples of the use of plant mutants in the elucidation of
biochemical pathways, and examination of somatic cell genetics
in higher plants; Offered alternate even numbered years in
spring.
HOS 6242-Genetics and Breeding of Vegetable Crops (3)
Prereq: AGR 3303. Techniques for genetic analysis of quantita-
tive characters and applied aspects of vegetable breeding. Of-
fered alternate even numbered years in fall.
HOS 6262- Physiological Genetics of Higher Plants (3) Genetic
control of physiological processes-metabolism, growth and de-
velopment, and responses to the environment.
HOS 6311-Seed Physiology (3) Prereq: BOT 3503. Study of the
dormancy, germination, growth, and development of seeds and
the life processes involved; methods of handling and processing.
Offered alternate even numbered years in fall.
HOS 6331-Postharvest Physiology (3) Prereq: BOT 3503 and
VEC 4452, ORH 4263 or equivalent. Physiological and bio-
chemical principles involved in quality maintenance and post-
harvest handling of fruit, vegetable, and ornamental crops.
Emphasis on phases of development known as maturation,
ripening, and senescence. Current theories and research re-
viewed with emphasis on understanding and control of cellular
processes important to storage and quality maintenance of
horticultural commodities.
HOS 6345-Environmental Physiology of Horticultural Crops
(3) Prereq: BOT 3503 and consent of instructor. Horticultural
crop physiology from a whole-plant viewpoint. Influence of
environmental factors on photosynthesis, water movement,
translocation, fruit set and yields. Offered alternate even num-
bered years in fall.
HOS 6351-Chemical Regulators of Horticultural Crops (3)
Physiology and biochemistry of chemical regulators as related to
horticultural crops, with emphasis on manipulative practices.
Offered alternate odd numbered years in fall.
HOS 6412-Nutrition of Horticultural Crops (3) Prereq: BOT
3503 and ORH 4411 or equivalent. Physiological, biochemical
and environmental factors influencing nutritional status of horti-
cultural plants and the resulting effects on growth, yield, and
quality. Offered alternate'odd numbered years in spring.
HOS 6523-Research and Development in Turfgrass Science (3)
Prereq: ORH 4221 and lab. Principles and practices of turfgrass
improvement and management, including propagation, nutri-
tion, physiology, soil management, and experimental methods
applied to turf research. Offered alternate even numbered years
in spring.
HOS 6535-Advanced Pomology (2) Principles of rootstock-
scion relationships, growth regulators, dormancy, flowering,
fruiting and crop evolution. Offered alternate even numbered
years in fall.
 HOS 6545-Citriculture 1 (3) Prereq: FRC 3212 and 4223, HOS
 5244 or equivalent. Regulation of citrus vegetative growth in-
 cluding climactic, physiological and cultural factors. Offered
 alternate odd numbered years in fall at Lake Alfred CREC.
 HOS 6546-Citriculture 11 (3) Prereq: FRC 3212 and 4223, HOS
 5244 or equivalent. Factors regulating flowering, fruit develop-'
 ment and alternate bearing of citrus. Offered alternate even
 numbered years in spring at Lake Alfred CREC.
 HOS 6565-Advanced Olericulture (3) Prereq: BOT 3503. Sur-
 vey of scientific knowledge related to production of vegetable
 crops. Offered alternate odd numbered years in fall.
 HOS 6905-Nonthesis Research in Horticultural Science (1-4;
 max: 4) H.
 HOS 6910-Supervised Research (1-5; max: 5) S/U.
 HOS 6929-Plant Physiology Colloquium (1; max: 3) Topics in
 plant physiology including historical aspects, key papers, re-
 search approaches, and hypotheses concerning important areas
 of current research. Offered in spring.


HOS 6931-Horticultural Science Seminar (1; max: 3) Oral
presentation of material in one of the following areas: literature
review related to student's research, research results, or pub-
lished paper of relevance to horticulture. Subject matter deter-
mined by instructor. S/U. Fall and spring.
HOS 6932-Topics (1-4; max: 8) Study of contemporary research
in horticultural science.
HOS 6940-Supervised Teaching (1-5; max: 5) S/U.
HOS 6941-Practicum in Horticultural Science (2-4; max: 8)
Admission limited to graduate students majoring in horticultural
science. Supervised and individual work in professional areas of
horticulture.
HOS 6971-Research for Master's Thesis (1-15) S/U.
HOS 7979-Advanced Research (1-9) Research for doctoral
students before admission to candidacy. Designed for students
with a master's degree in the field of study or for students who
have been accepted for a doctoral program. Not open to students
who have been admitted to candidacy. S/U.
HOS 7980-Research for Doctoral Dissertation (1-15) S/U.



IMMUNOLOGY AND MEDICAL
MICROBIOLOGY
College of Medicine

 GRADUATE FACULTY 1989-90
 Chairman: R. W. Moyer. Graduate Coordinators: R. B.
 Crandall; A. S. Lewin. Graduate Research Professors: A.
 S. Bleiweis; H. M. Johnson. Professors: E. M. Ayoub; W.
 B. Clark; R. B. Crandall; D. H. Duckworth; J. B. Flanegan;
 E. P. Gibbs; R. R. Gutekunst; W. W. Hauswirth; E. M.
 Hoffmann; L. O. Ingram;W. P. McArthur;J. E. McGuigan;
 R. W. Moyer; S. A. Moyer; J. T. Neilson; J. W. Shands; P.
 A. Small; C. B. Walker; R. S. Weiner; M. D. Young.
 Associate Professors: D. J. Barrett; L. M. Hutt-Fletcher; A.
 S. Lewin; R. Ramphal; K. H. Rand. AssistantProfessors:H.
 V. Baker; P. A. Gulig; A. Progulske.

 The Department of Immunology and Medical Microbi-
 ology offers a program leading to the Doctor of Philoso-
 phy degree in medical sciences. Areas of specialization
 include molecular genetics, virology, cellular and hu-
 moral immunity, immunochemistry, parasitology, bacte-
 riology, and molecular pathogenesis.
 The undergraduate preparation for graduate study should
 be wide in scope and should include general biology,
 physics, chemistry (two to three years, including organic
 and physical chemistry), and preferably statistics, calcu-
 lus, genetics, and bacteriology. A bachelor's degree in
 bacteriology or microbiology is not required. In graduate
 school thestudentwill at firstobtain a general background
 in microbiology as preparation for research and teaching.
 The remaining course work should be arranged according
 to the student's interests and competence. Through indi-
 vidual planning of course work, research, and teaching,
 the graduate student is offered an educational atmosphere
 to help develop certain skills and gain intellectual inde-
 pendence and initiative.


 BMS 6310-Infectious Diseases (3) Prereq: working knowledge
 of bacteriology and virology. Pathogenesis of selected bacterial,
 viral, fungal and parasitic diseases, emphasizing the clinical and
 pathological aspects of human infections.
 BMS 6314-Principles of Immunology (3-5; max: 5) Biological
 and biochemical aspects of host resistance and immunity; the
 chemical and physiochemical properties of the proteinsof immune
 reactions.
 BMS 6321-Special Topics in Microbiology (1-6; max: 18)
 BMS 6330-Virology (3) Nature of viruses and mechanisms of
 viral infection: animal, bacterial, and plant viruses.
 BMS 6352-Molecular Genetics (3-5; max: 5) Molecular biologi-
 cal processes-mutation, selection, transformation, transduction,