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Plant Physiology II

Course developers

Prior knowledge

Biol3014, Plant Physiology I

Course abstract

Plant growth and development. Plant hormones and growth regulation. Photoperiodism and physiology of flowering processes. Dormancy. Plant stress and adaptation to environmental conditions. Sick plant physiology. Plant immunity. Seed development, ripening, dormancy and germination. Physiological processes of yield formation of different groups of agricultural crops.

Learning outcomes and their assessment

Students obtain knowledge about plant growth and development, physiological processes in plants, effects of internal and environmental factors on plants and yield formation.
Students are able to determine main physiological parameters of plants.
Students can assess plant growth and development and affecting and limiting plant ontogenesis factors.

Course Content(Calendar)

1. Plant growth and development. Plant hormones and growth regulation.1h
2. Fertilization, seed development, seed maturation. Seed dormancy. 1h
3. Physiology of seed germination processes. Juvenile period. 1h
4. Reproductive period, possibilities of its regulation. Photoperiodism and physiology of flowering processes. 1h
5. Plant senescence, its regulation. 1h
6. Plant dormancy period, its regulation. 1h
7. Physiological regularities of crop yield formation. 1h
8. Physiology of cereal crop formation. 1h
9. Physiology of pulse and oil crop formation. 1h
10. Physiology of potato and root crop formation. 1h
11. Physiological peculiarities of grasses. The dynamics of green mass accumulation and the changes of the qualitative composition in different stages of development1h
12. Physiology of formation and ripening of fruits and berries. 1h
13. Vegetable crop formation. Post- harvest physiology. 1h
14. Plant stress and adaptation to adverse environmental conditions. 1h
15. Wintering of plants. Effects of environmental factors on plants during wintering. 1h
16. Diseased plant physiology. Plant immunity. 1h

Thematic plan of laboratory work:
1) Establishment of vegetation trials.
2) Determination of seed germination capacity
3) Plant water regime. Guttation
4) Water retention capacity of plants. Pigment content.
5) Determination of vitamin C
6) Determination of reducing sugars

7) Elimination of experiments

Requirements for awarding credit points

Working out and answering of laboratory works. Successfully written 2 tests. Essay about chosen plant productivity.

Description of the organization and tasks of students’ independent work

Reporting of laboratory works and explanation of the obtained results. Independent work in preparation for tests.

Criteria for Evaluating Learning Outcomes

Students' knowledge is assessed in tests on plant growth and development and plant stress physiology. The student should write an essay on the productivity of the selected plant and the possibilities of increasing it.

Tests:
Plant Growth and development 10%
Stress physiology 10%
Essey - Plant productivity 10%
Labs ( worked out and defenced) 20%

Exam 50%

Compulsory reading

1. Ieviņš Ģ. Augu fizioloģija. Funkcijas un mijiedarbība ar vidi. Rīga: LU Akadēmiskais apgāds, 2016. 607 lpp.
2. Mauriņa H. Augu fizioloģija. Rīga: Zvaigzne, 1987. 358 lpp.
3. Taiz L., Zeiger E. Plant Physiology. Sunderland, MA: Sinauer Associates, 2006. 764 p.

Further reading

1. Физиология и биохимия сельскохозяйственных растений. Под ред. Н.Н. Третьякова; [авт. : Н.Н. Третьяков ... [и др.]. 2-е изд., перераб и доп. Москва: КолосС, 2005. 654 с.

2. Heldt H.W. Plant biochemistry and molecular biology. Oxford: Oxford University Press, 1999. 522 p.

Periodicals and other sources

Nozares žurnāli:
“Saimnieks.LV”,
“Agrotops”,

“Dārza pasaule” u.c.

Notes

Mandatory course of Academic Bachelor Study Program “Sustainable Agriculture” and Professional higher education Bachelor program “Agriculture” Agronomists with specialisation in Field Crop and in Horticulture