| Introduction |
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| Database on Jatropha shall document various descriptors that shall be useful for assigning new cultivars, varieties, developing commercial varieties, evaluating site-specific cultivars etc. It will also link various networks, trials and R&D programs in the country. |
| You can access and feed data as per suggested descriptors: |
- Passport data of accessioning collections
- Evaluation of trials (clonal as well as half sib progeny trials)
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| Definition of the descriptors: |
| Passport descriptors: These will provide basic information used of the general management of the accession (including registration at the gene bank and other identification information) and describe parameters to be observed when the accession is originally collected. |
| Management descriptors: These will provide a basis for the management of accessions in the gene bank and assist with their multiplication and regeneration. |
| Environment and site descriptors: These describe the environmental and site-specific parameters would be of help in characterization and evaluation trials are held. They can be important for the interpretation of the results of those trials. Site descriptors for germplasm Collection also included here. |
| Characterization descriptors: These enable an easy and quick discrimination between phenotypes. They are generally highly heritable, can be easily seen by the eye and are equally expressed in all environments. In addition, these may include a limited number of additional traits thought desirable by a consensus of Network. |
| Evaluation descriptors: The expression of many of the descriptors in this category will depend on the environment and, consequently, special experimental designs and techniques are needed to assess them. Their assessment may also require complex biochemical or molecular characterization methods which include characters such as yield, agronomic performance, stress susceptibilities and biochemical and cytological traits of the plant. They are generally the most interesting traits in crop improvement. |
| Many quantitative characters which are continuously variable are recorded on a 1-9 scale, where: |
- Very Low
- Very Lot to Low
- Low
- Low to Intermediate
- Intermediate
- Intermediate to High
- High
- High to Very High
- Very High
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Dates should be expressed numerically in the format YYYMMDD, where
YYYY – 4 digits to represent the year
MM – 2 digits to represent the month
DD – 2 digits to represent the day |
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