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United States Department of Agriculture
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Effective Jan. 1, 2025, the U.S. National Plant Germplasm System will modify its SMTA acceptance policy to distinguish between propagative and non-propagative germplasm.
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USDA National Plant Germplasm System
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2.3.12
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Descriptor:
FIRST LEAF DEGREE DAYS (FIRSTLFDD)
Download list of accessions evaluated for this trait
Definition:
Number of degree days when first leaf appears on plant
Crop:
RIBES
Category:
Phenological descriptors
Status:
Data Type:
Numeric descriptor
Maximum Length:
4
Responsible Site:
National Clonal Germplasm Repository (
COR
)
Studies or environments
RIBES.CORVALLIS.1999.HUMMER
411 Accessions
RIBES.CORVALLIS.2008.DALTON
490 Accessions
Distribution of Values for
FIRST LEAF DEGREE DAYS (FIRSTLFDD)
Range
Number of Accessions
33 - 96
1
96 - 159
0
159 - 222
129
222 - 285
325
285 - 349
249
349 - 412
69
412 - 475
20
475 - 538
15
538 - 601
5
601 - 664
5