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United States Department of Agriculture
Agricultural Research Service
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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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Descriptor:
Chromosome Number (PLOIDY)
Download list of accessions evaluated for this trait
Definition:
Laboratory determination of chromosome number.
Crop:
BARLEY
Category:
Cytological or cellular descriptors
Status:
Crop Germplasm Committee approved
Data Type:
Numeric descriptor
Maximum Length:
3
Responsible Site:
National Small Grains Collection (
NSGC
)
Studies or environments
BARLEY.EVAL.NSGC
686 Accessions
BARLEY.PLOIDY.ABERDEEN
21 Accessions
Distribution of Values for
Chromosome Number (PLOIDY)
Range
Number of Accessions
14 - 17
680
17 - 20
0
20 - 22
0
22 - 25
0
25 - 28
23
28 - 31
23
31 - 34
0
34 - 36
0
36 - 39
0
39 - 42
4