What is intermediate seed?
What is intermediate seed?
Intermediate seeds are characterized by at least one of the following symptoms: Longevity is highest if seeds are dried to between 45 and 65% RH compared to the 15 to 20% RH optimum observed for orthodox seeds. Seeds age faster when stored at conventional freezer temperatures compared to refrigerated temperatures.
What is the seed storage and its stages?
STAGES/SEGMENTS OF SEED STORAGE
| 1 | Post maturation/ Pre harvest segment |
|---|---|
| 2 | Bulk seed segment |
| 3 | Packaged seed segment |
| 4 | Distribution /Marketing Segment |
| 5 | On-farm segment |
What are the main criteria for seed storage?
Seeds of most garden and crop plants store best when dried and kept at low temperatures. In most national seed banks, the preferred method for long-term storage is freezing to near 0º F, which is the temperature in a home freezer or in the freezing compartment of a home refrigera- tor.
What are 2 important concepts for seed storage that increase the length of viability?
Relative Humidity and temperature are the most important factors determining the storage life of seeds.
What is intermediate seeds in agriculture?
A third group is the intermediate seeds which exhibit the drying tolerance characteristic of the orthodox seeds but are sensitive to low-temperature storage like the recalcitrant seeds. An example of a plant that produces intermediate seeds is papaya or pawpaw (Carica papaya).
What is recalcitrance in plants?
Recalcitrance is the inability of plant cells, tissues and organs to. respond to tissue culture.
What are the types of seed storage?
Types of seed storage
- Bulk (open) storage.
- Bag storage.
- Classification of packaging materials or containers used for bag storage. Moisture and vapour pervious containers.
- Moisture impervious but vapour pervious containers.
- Moisture and vapour proof containers.
What is seed storage definition?
In a genebank, seed storage is the preservation of seeds under controlled environmental conditions which will prolong the viability of the seeds for long periods. Two types of seed stores are used for collections of genetic resources, those holding base collections and those holding active collections.
What are the classes of seed?
Breeder seed.
What is one important physical factor in storing of seeds?
Relative Humidity and Temperature During Storage: Relative humidity and temperature by far are the most important factors determining the storage life of seeds.
What seeds are recalcitrant?
Plants that produce recalcitrant seeds include avocado, mango, mangosteen, lychee, cocoa, rubber tree, some horticultural trees, aquatic plants such as Nymphaea caerulea, and several plants used in traditional medicine, such as species of Virola and Pentaclethra.
What is the definition of recalcitrance?
1 : obstinately defiant of authority or restraint. 2a : difficult to manage or operate. b : not responsive to treatment. c : resistant this subject is recalcitrant both to observation and to experiment— G. G. Simpson.
