Abstract
Plant breeders interested in hybrid sorghum in the past few years have initiated intensive improvement programs whereby two or three generations of breeding stock may be grown each year. To accomplish this, seed must be harvested as early as is possible, dried immediately, and planted within a few weeks after harvest. During routine testing of these freshly harvested and dried seeds, many samples were found which did not give satisfactory germination results. The low germinating samples were checked with a triphenyl tetrazolium chloride solution to determine their potential viability. The tetrazolium test indicated the seed was 100 percent viable. This evidence pointed to the fact that these samples were in a temporary state of dormancy. The same samples tested a few months after harvest gave satisfactory germination. Similar difficulty has been encountered at the South Dakota Seed Laboratory. The Agronomy Seed Laboratory tests all samples for the Seed Certification Service. These tests determine whether or not the samples submitted for certification meet the certification standards for purity and germination. The minimum certification standard for germination of Sorghum vulgare Pers. seed is 80 percent (2). The Agronomy Seed Laboratory obtained many germination percentages below this standard during routine testing of sorghum samples for the Certification Service. This was especially evident for the forage sorghums. Further testing with a tetrazolium salt solution showed the samples had a much higher potential germination. Dry storage of these same samples in the laboratory for three to four months gave germinations comparable to the tetrazolium results. A special treatment for fresh and dormant seed, recommended by the Association of Official Seed Analysts in the publication Rules for Testing Seeds (1), had no beneficial effect on the germination of these dormant lots of seed. This study was undertaken to determine if dormancy is present in the grain and forage sorghums. It was also desired that a reliable method for breaking dormancy could be devised for use in testing dormant samples of sorghum at the Agronomy Seed Laboratory.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Routine germination percentages of freshly harvested sorghum samples were below the certification standard at the Agronomy Seed Laboratory.
- Outcome
- germination percentagese7
- Direction
- belowe7
- Comparator
- this standarde7
- Setting
- Agronomy Seed Laboratorye7
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The Agronomy Seed Laboratory obtained many germination percentages below this standard during routine testing of sorghum samples for the Certification Service”
Claim · model-written summary
The tetrazolium test indicated that the sorghum seed was 100 percent viable.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant breeders interested in hybrid sorghum in the past few years have initiated intensive improvement programs”
e2“The tetrazolium test indicated the seed was 100 percent viable”
Claim · model-written summary
Dry storage of sorghum samples in the laboratory for three to four months gave germinations comparable to the tetrazolium results.
- Treatment
- Dry storage of these same samples in the laboratory for three to four monthse4
- Outcome
- germinationse4
- Direction
- comparablee4
- Comparator
- tetrazolium resultse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant breeders interested in hybrid sorghum in the past few years have initiated intensive improvement programs”
e4“Dry storage of these same samples in the laboratory for three to four months gave germinations comparable to the tetrazolium results”
Claim · model-written summary
A special AOSA treatment for fresh and dormant seed had no beneficial effect on germination of dormant sorghum lots.
- Treatment
- A special treatment for fresh and dormant seede5
- Outcome
- germinatione5
- Direction
- no beneficial effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant breeders interested in hybrid sorghum in the past few years have initiated intensive improvement programs”
e5“A special treatment for fresh and dormant seed, recommended by the Association of Official Seed Analysts in the publication Rules for Testing Seeds (1), had no beneficial effect on the germination of these dormant lots of seed”
Claim · model-written summary
Low germination of the samples indicates that they were in a temporary state of dormancy.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant breeders interested in hybrid sorghum in the past few years have initiated intensive improvement programs”
e6“This evidence pointed to the fact that these samples were in a temporary state of dormancy”
e1“many samples were found which did not give satisfactory germination results”
Claim · model-written summary
Similar germination difficulty was encountered at the South Dakota Seed Laboratory.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant breeders interested in hybrid sorghum in the past few years have initiated intensive improvement programs”
e1“Similar difficulty has been encountered at the South Dakota Seed Laboratory”
The same questions in other papers
storage · growth · SorghumPositive and negative results
9 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- no effect
12 papers more in this group
See all 16 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.