Select the tab for the type of search. Each tab has everything you need to do to perform that type of search.
(Results of more than 500 will not return images.)
This search will show only accessions that have material that may be requested, including those not seasonally available.
You may list accessions with separators (commas or semicolons, as shown below) or by entering them on separate lines, such as
PI 651794
PI 651649
PI 651650
When searching a range of accessions, use the Advanced Search tab with the Accession Identifier Range criterion.
The more information you provide, the better the search will be.
Scientific name (any part, no hybrid symbols)
Genebank
Country of Origin
Other search criteria:
If your results aren't what you expected, try using the Advanced Search tab and filling in more information.
Your query included:
All accessions
| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
|---|
| 0 | PI 702359 | 'HA-DM15' | Helianthus annuus L. | North Dakota, United States | NC7 | | | 2023 | DEVELOPED | | | | | | | HA-DM15 (Pl37Pl37) is a BC1F3-derived BC1F4 oilseed maintainer selection from the cross of HA 89//NMS HA 89/Helianthus annuus accession PI 435417 developed for resistance to DM. HA 89 (PI 599773) is an oilseed maintainer line susceptible to DM released by USDA and the Texas Agricultural Experiment Station in 1971, while the nuclear male sterile (NMS) HA 89 is a mutation of HA 89, genetically similar to HA 89, but possessing a single recessive male sterile gene ms9 released by USDA in 1990. The wild H. annuus accession (PI 435417) originally collected in Texas in 1976 was identified as resistant to new P. halstedii races in 2005. HA-DM15 was developed using the backcross breeding method and DNA marker-assisted selection for the Pl37 gene introgressed from wild H. annuus accession PI 435417. The cross between NMS HA 89 and PI 435417 was initially made in 2015 and the selected resistant F1 plants were backcrossed to HA 89. In the BC1F3 population with 140 families, three homozygous families with good seed set per head were selected based on DM tests using P. halstedii race 734 and DNA markers linked to the Pl37 gene mapped to sunflower chromosome 4. The BC1F3-derived HA-DM15 is homozygous for the Pl37 gene verified by DNA markers and immune to P. halstedii races, 700, 707, 714, 730, 734, 770, and 776 which are currently identified as the most prevalent and virulent races in the United States and Europe. Plant height of HA-DM15 was 171 cm compared to 135 cm for HA 89, and flowered in 70 days after planting compared to 68 days for HA 89 in the field nursery at Glyndon, MN during the summer of 2021. | 2141559 | PI 702359 |
| 1 | PI 702360 | 'HA-DM16' | Helianthus annuus L. | North Dakota, United States | NC7 | | | 2023 | DEVELOPED | | | | | | | HA-DM16 (Pl38Pl38) is an improved oilseed derivative of Rf PRA-417 (PI 596749) with resistance to downy mildew (DM). Rf PRA-417 is a BC1F2 bulk from an interspecific cross of cytoplasmic male sterile (CMS) HA 89*2/PRA-417 released as a male fertility restorer line in 1991. The CMS HA 89 was developed by substituting the nuclear genome of HA 89 into the background of a wild annual species H. petiolaris (CMS PET1). PRA-417 is a wild H. praecox subsp. runyonii accession. Initial DM screening with P. halstedii race 734 revealed that Rf PRA-417 was segregating for DM infection. Six resistant plants from the Rf PRA-417 population of 58 plants tested were selected and self-pollinated to the next generation. The progeny tests of the selected plants revealed that three, 19-06-3, 19-06-4, and 19-06-5 (BC1F3) were homozygously resistant to DM infection. The DM R gene Pl38 from the wild H. praecox PRA-417 has been genetically mapped to sunflower chromosome 2. The BC1F3-derived HA-DM16 is homozygous for the Pl38 gene verified by DNA markers and immune to the most prevalent and virulent P. halstedii races, 700, 707, 714, 730, 734, 770, and 776. Plant height of HA-DM16 was 158 cm compared to 135 cm for HA 89, and flowered in 68 days after planting the same as HA 89 in the field nursery at Glyndon, MN during the summer of 2021 | 2141560 | PI 702360 |