| CYTOLOGIC | Chromosome Number | Laboratory determination of chromosome number. | 28 | | WHEAT.PLOIDY.ABERDEEN | PI 170991 TR05ID SD | Not Available |
| DISEASE | Barley Yellow Dwarf Virus UR | Reaction to Barley Yellow Dwarf Virus - Urbana. | 5 - (1 = RESISTANT, 9 = SUSCEPTIBLE) | | WHEAT.BYDV.URBANA.89 | PI 170991 TR88ID SD | Not Available |
| DISEASE | Stem Rust Adult - Rosemount | Reaction to Stem Rust (incited by Puccinia graminis f.sp. tritici) in the adult growth stage in the field. Grown in Rosemount. | 1 - (0 = RESISTANT, 9 = SUSCEPTIBLE) | | WHEAT.STEMRUST.ROSEMOUNT.89 | PI 170991 TR88ID SD | Not Available |
| DISEASE | Stem Rust Adult - STPAUL | Reaction to Stem Rust (incited by Puccinia graminis f.sp. tritici) in the adult growth stage in the field. Grown in Rosemount. Grown in St. Paul. | 1 - (0 = RESISTANT, 9 = SUSCEPTIBLE) | | WHEAT.STEMRUST.STPAUL.89 | PI 170991 TR88ID SD | Not Available |
| DISEASE | Stripe Rust Adult Reaction MTV | Reaction to Stripe Rust (incited by Puccinia striiformis) in the adult plant stage in the field. See also related descriptor Stripe Rust Adult Severity. Grown in Mt. Vernon. | 2 - RESISTANT | | WHEAT.STRIPERUST.MTVERNON.87 | PI 170991 TR88ID SD | Not Available |
| DISEASE | Stripe Rust Adult Reaction PUL | Reaction to Stripe Rust (incited by Puccinia striiformis) in the adult plant stage in the field. See also related descriptor Stripe Rust Adult Severity. Grown in Mt. Vernon. Grown in Pullman. | 5 - INTERMEDIATE | | WHEAT.STRIPERUST.PULLMAN.87 | PI 170991 TR88ID SD | Not Available |
| DISEASE | Stripe Rust Adult Severity MTV | Percent severity or intensity of Stripe Rust (incited by Puccinia striiformis) in the adult plant stage in the field. See also related descriptor Stripe Rust Adult Reaction. Grown in Mt. Vernon. | 5 | | WHEAT.STRIPERUST.MTVERNON.87 | PI 170991 TR88ID SD | Not Available |
| DISEASE | Stripe Rust Adult Severity PUL | Percent severity or intensity of Stripe Rust (incited by Puccinia striiformis) in the adult plant stage in the field. See also related descriptor Stripe Rust Adult Reaction. Grown in Mt. Vernon. Grown in Pullman. | 1 | | WHEAT.STRIPERUST.PULLMAN.87 | PI 170991 TR88ID SD | Not Available |
| GROWTH | Growth Habit | Growth habit, based on a spring planting. | S - SPRING | | WHEAT.HABIT.ABERDEEN.01 | PI 170991 TR88ID SD | Not Available |
| GROWTH | Plant Height Ratio | Height of the wheat plant from ground to the top of the spike (excluding awns) at maturity. Expressed as a ratio of the check entry. See also related descriptor Plant Height. | 2.361 | | WHEAT.AGRON.MARICOPA.04 | PI 170991 TR88ID SD | Not Available |
| INSECT | Cereal Leaf Beetle | Reaction to Cereal Leaf Beetle (Oulema melanopus), based on larval feeding damage. | 3 - OVER 40% FOLIAGE EATEN | | WHEAT.CLB.MICHIGAN.63.70 | PI 170991 TR88ID SD | Not Available |
| INSECT | Hessian Fly Biotype C | Reaction to Hessian fly Biotype C (Mayetiola destructor). | 9 - SUSCEPTIBLE (81-100% S) | | WHEAT.HESSIANFLY.WLAF.87 | PI 170991 TR88ID SD | Not Available |
| INSECT | Hessian Fly Biotype E | Reaction to Hessian fly Biotype E (Mayetiola destructor). | 8 - (1 = RESISTANT, 9 = SUSCEPTIBLE 71-80% S) | | WHEAT.HESSIANFLY.WLAF.87 | PI 170991 TR88ID SD | Not Available |
| INSECT | Russian Wheat Aphid Chlorosis1 | Reaction to the Russian Wheat Aphid Biotype 1 (Diuraphis noxia). Amount of chlorosis. See RWA Leafroll descriptor, also. | 9 - PLANT DEATH OR NO RECOVERY POSSIBLE | | WHEAT.RWA.STILLWATER.93 | PI 170991 TR88ID SD | Not Available |
| INSECT | Russian Wheat Aphid Leafroll1 | Reaction to the Russian Wheat Aphid Biotype 1 (Diuraphis noxia). Leafrolling symptoms. See RWA Chlorosis descriptor, also. | R - LEAVES ROLLED, LOOSELY TO TIGHTLY | | WHEAT.RWA.STILLWATER.93 | PI 170991 TR88ID SD | Not Available |
| MORPHOLOGY | Spike Density | Visual measure of spike density. | 6 - (1 = LAX, 9 = VERY DENSE) | | WHEAT.LAB.ABERDEEN.18 | | Not Available |
| MORPHOLOGY | Spike Type | Shape characteristic of typical mature spikes. | 3 - OBLONG | | WHEAT.AGRON.ABERDEEN.23 | | Not Available |
| MORPHOLOGY | Glume Pubescence | Type and extent of glume pubescence. | 1 - ABSENT | | WHEAT.AGRON.ABERDEEN.23 | | Not Available |
| MORPHOLOGY | Glume Color | Color of the glumes. | 7 - TAN | | WHEAT.LAB.ABERDEEN.18 | | Not Available |
| MORPHOLOGY | Kernel Color | Color of the kernels. | 3 - BROWN | | WHEAT.LAB.ABERDEEN.09B | PI 170991 TR05ID SD | Not Available |
| MORPHOLOGY | Awn Color | Color of the awns. | 1 - BLACK | | WHEAT.LAB.ABERDEEN.18 | | Not Available |
| MORPHOLOGY | Awn Type | Type and extent of the awns. | 1 - AWNED | | WHEAT.LAB.ABERDEEN.18 | | Not Available |
| PHENOLOGY | Days to Anthesis | Days from January 1 (Julian) when 50% of the spikes are fully exserted from the boot. See also related descriptor Days to Flowering. | 198 | | WHEAT.AGRON.ABERDEEN.85 | PI 170991 TR88ID SD | Not Available |
| PHENOLOGY | Days to Flowering | Number of days from January 1 (inclusive) when 50% of the spikes are fully exserted from the boot. Expressed as a ratio of the check entry. See also related descriptor Days to Anthesis. | 1.231 | | WHEAT.AGRON.MARICOPA.04 | PI 170991 TR88ID SD | Not Available |
| PRODUCTION | 1000 Kernel Weight | Thousand kernel weight, based on a 30ml volume sample size.
| 44.9 | | WHEAT.LAB.ABERDEEN.09B | PI 170991 TR05ID SD | Not Available |