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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
|---|
| 0 | PI 673347 | ShunMai yyAh | Triticum aestivum L. subsp. aestivum | Shanxi Sheng, China | NSGC |  | | 2014 | DEVELOPED | | | | | | Genetic material | In the F14 population (2012), there were 7722 necrotic plants classified as ShunMai 12Ah, and 516 normal plants classified as ShunMai 12Af, the ratio of ShunMai 12Ah:12Af=7722:516=15:1. In the F15 (2013), the ratio of ShunMai 13Ah:13Af=6843:508=13.5:1. In the F16 (2014), the ratio of ShunMai 14Ah: 14Af=5489:3118=17:1 (The number before Ah or Af refers to the growing year, 12=2012, 13=2013, 14=2014). All of the ShunMai Ah and ShunMai Af plants (in F10 to F16) showed similar phenotype except the necrotic trait in the field based on visual observations, which suggested that the two types of progeny plants shared a high level of genetic identity in later generations. Three years of test crosses repeatedly showed that ShunMai Af had Ne1 and lost Ne2 permanently. Theoretically, ShunMai Ah and ShunMai Af should 99.99% genetic similarity. The two sibling lines, the necrosis ShunMai Ah (Ne1Ne1Ne2Ne2) and the normal ShunMai Af (Ne1Ne1ne2ne2) can be used to bring out secret of the so called wheat hybrid necrosis. | 1921842 | PI 673347 |