Methods of Breaking Seed Dormancy
sanaFollowing methods are used to break the seed dormant: Methods of breaking dormancy of hard seed coat: The dormancy of hard seed coal can be broken by following methods: (a)…
Seed Dormancy & its Causes
The physiological inability of a seed to germinate even under favourable condition is called seed dormancy. Many kinds of seeds can germinate immediately after maturation. The seeds in some species…
Objective for photoperiodism
Multiple Choice Questions (MCQs) Experiments on hemp were performed by: (a) Garner (b) hi ien (c) Kleb (d) Hamner Experiment on house leek plants were performed by: (a) Garner (b)…
Subjective and Short questions for photoperiodism
Subjective questions for photoperiodism: What is photoperiodism? Give its historical background. Give classification of plants on the basis of photoperiodic responses. What is critical period? Explain. What are phytochromes? Give…
DEFINITIONS AND KEY POINTS FOR Photoperiodism
TERMS DEFINITIONS Photoperiodism The response of plant tothe relative length of light and dark period is called photoperiodism. Short Day Plants (SDP) The plants that flower when day length…
ROLE OF HORMONES IN PHOTOPERIODISM ROLE OF FLORIGEN
The phytochromes are present in the leaf. But the flowers are produced at the stein tip and its branches. The apical or lateral buds express the stimulus of flowering. It…
Phytochromes – Discovery , Types & Mechanism
The proteins present in the leaves which absorb light of different wave lengths are called phytochromes. DISCOVERY OF PHYTOCHROMES White light consists of radiations from 390 to 810p. The plant…
CLASSIFICATION OF FLOWERING RESPONSES
(a) Short Day Plants (SDP) The plants that flower when day length is less than a certain critical length are called short day plants. These plants require specific short duration…
PHOTOPERIODISM
The response of plant to the relative length of light and dark period is called photoperiodism. I here are number of plants responses controlled FA photoperiods. Some of these are:…
Objective for Grower& Plant Hormones
Multiple Choice Questions (MCQs) The hormone which promote apical dominance is: ;a) Gibberellins (b) Auxins (c) ethene (d) Cytokinins Abscission is prevented by: (a) Gibber-Inns (b) Auxins (c)ethene (d) Cytokin…