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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 642415 | 'OK Bullet' | Triticum aestivum L. subsp. aestivum | Oklahoma, United States | PVPO | | Not Available | 2006 | DEVELOPED | 2005 | | | | | Cultivar | OK Bullet shows moderately early arrival to first-hollow-stem (FHS) stage and moderately early heading date. It reaches the FHS stage in central Oklahoma 2 d later than Jagger and 16 d earlier than 2174 Heading date is intermediate to Jagger (3 d earlier) and 2174 (2 d later). Its juvenile growth habit is erect to semi-erect. Though it is postulated to contain Rht-B1b, OK Bullet exceeds most currently grown hard winter wheat cultivars in plant height. It is about 8 cm taller than Jagger and 6 cm taller than 2174. OK Bullet shows a tolerant reaction to aluminum (Al) toxicity in low-pH field conditions (pH=4.0-4.5), and shows the same banding pattern as Jagger for the SSR markers, wmc331 and gdm125, and the gene marker for malate release, ALMT1, on chromosome 4DL.. Based on field observations in Oklahoma, OK Bullet is moderately resistant to Wheat soilborne mosaic and Wheat spindle streak mosaic virus, but moderately susceptible to Barley yellow dwarf virus. Based on field observations of adult plants across Oklahoma through 2005, it shows a resistant reaction to both leaf rust, caused by Puccinia triticina Eriks, and stripe rust, caused by P. striiformis Westendorp. f. sp. tritici. Based on greenhouse observations, OK Bullet is moderately resistant to tan spot (Pyrenophora tritici-repentis) and to septoria leaf blotch (Septoria tritici), but susceptible to powdery mildew (Blumeria graminis f. sp. tritici). It is susceptible to biotypes C and E of the greenbug (Schizaphis graminum Rondani) and to Hessian fly (Mayetiola destructor). Flag leaves of OK Bullet at the boot stage are green, recurved, twisted, and non-waxy. Spikes are white-chaffed, awned, oblong, middense, and inclined at harvest-maturity. Kernels are red, hard-textured, ovate, and they have a midwide, middeep crease, rounded cheeks, and large germ. Milling quality is exceptional, and baking quality is above-average. | 1699846 | PI 642415 |