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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
Version:
2.3.12
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Descriptor:
Head Number (HEAD NUMBER)
Download list of accessions evaluated for this trait
Definition:
Number of heads at maturity
Crop:
GRASS-COOLSEASON
Category:
Morphological descriptors
Status:
Data Type:
Alpha/numeric descriptor
Maximum Length:
2
Responsible Site:
Western Regional PI Station (
W6
)
Studies or environments
GRASS.2010.BRADLEY.BRACHYPODIUM
32 Accessions
GRASS.IMAGE.2010.ERAGROSTIS.TEF.CFERRY
368 Accessions
Distribution of Values for
Head Number (HEAD NUMBER)
Code
Definition
Number of Accessions
1
Few heads
105
2
Between few and average heads
290
3
Average heads
358
4
Between average and many heads
176
5
Many heads
57