| CHEMICAL | Lysine | Lysine in the grain, expressed as percent of protein. | 3.1 | | WHEAT.LYSINE.LINCOLN | PI 166591 TR SD | Not Available |
| CYTOLOGIC | Chromosome Number | Laboratory determination of chromosome number. | 42 | | WHEAT.PLOIDY.ABERDEEN | PI 166591 TR97ID 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. | 9 - SUSUCEPTIBLE | | WHEAT.STEMRUST.ROSEMOUNT.91 | PI 166591 TR 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. | 9 - SUSUCEPTIBLE | | WHEAT.STEMRUST.STPAUL.91 | PI 166591 TR SD | Not Available |
| DISEASE | Stem Rust Seedling HNLQ | Seedling infection types produced by Puccinia graminis f.sp. tritici - HNLQ. | S - VERY SUSCEPTIBLE; UREDIA LARGE AND OFTEN COALESCING, NO NECROSIS BUT CHLOROSIS MAY BE PRESENT | | WHEAT.STEMRUST.GH.91 | PI 166591 TR SD | Not Available |
| DISEASE | Stem Rust Seedling QFBS | Seedling infection types produced by Puccinia graminis f.sp. tritici - QFBS. | 2 - MODERATELY RESISTANT; UREDIA SMALL TO MEDIUM, USUALLY GREEN ISLANDS SURROUNDED BY A DECIDEDLY CHLOROTIC/NECROTIC BORDER | | WHEAT.STEMRUST.GH.91 | PI 166591 TR SD | Not Available |
| DISEASE | Stem Rust Seedling RKQS | Seedling infection types produced by Puccinia graminis f.sp. tritici - RKQS. | S - VERY SUSCEPTIBLE; UREDIA LARGE AND OFTEN COALESCING, NO NECROSIS BUT CHLOROSIS MAY BE PRESENT | | WHEAT.STEMRUST.GH.91 | PI 166591 TR SD | Not Available |
| DISEASE | Stem Rust Seedling RTQQ | Seedling infection types produced by Puccinia graminis f.sp. tritici - RTQQ. | S - VERY SUSCEPTIBLE; UREDIA LARGE AND OFTEN COALESCING, NO NECROSIS BUT CHLOROSIS MAY BE PRESENT | | WHEAT.STEMRUST.GH.91 | PI 166591 TR SD | Not Available |
| DISEASE | Stem Rust Seedling TNMK | Seedling infection types produced by Puccinia graminis f.sp. tritici - TNMK. | S - VERY SUSCEPTIBLE; UREDIA LARGE AND OFTEN COALESCING, NO NECROSIS BUT CHLOROSIS MAY BE PRESENT | | WHEAT.STEMRUST.GH.91 | PI 166591 TR 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. | 5 - INTERMEDIATE | | WHEAT.STRIPERUST.MTVERNON.86 | PI 166591 TR 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. | 2 - RESISTANT | | WHEAT.STRIPERUST.PULLMAN.86 | PI 166591 TR 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. | 70 | | WHEAT.STRIPERUST.MTVERNON.86 | PI 166591 TR 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. | 2 | | WHEAT.STRIPERUST.PULLMAN.86 | PI 166591 TR SD | Not Available |
| GROWTH | Growth Habit | Growth habit, based on a spring planting. | S - SPRING | | WHEAT.HABIT.ABERDEEN.01 | PI 166591 TR97ID 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 166591 TR97ID SD | Not Available |
| INSECT | Hessian Fly Biotype C | Reaction to Hessian fly Biotype C (Mayetiola destructor). | 9 - SUSCEPTIBLE (81-100% S) | | WHEAT.HESSIANFLY.WLAF.88 | PI 166591 TR SD | Not Available |
| INSECT | Hessian Fly Biotype E | Reaction to Hessian fly Biotype E (Mayetiola destructor). | 9 - SUSCEPTIBLE (81-100% S) | | WHEAT.HESSIANFLY.WLAF.88 | PI 166591 TR 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. | 7 - 70% LEAF CHLOROTIC, FURTHER SYMPTOMS DEVELOP. | | WHEAT.RWA.STILLWATER.89 | PI 166591 TR 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.89 | PI 166591 TR 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.13 | PI 166591 TR97ID SD | Not Available |
| MORPHOLOGY | Glume Pubescence | Type and extent of glume pubescence. | 1 - ABSENT | | WHEAT.PURIF.ABERDEEN.90 | PI 166591 TR SD | Not Available |
| MORPHOLOGY | Glume Color | Color of the glumes. | 7 - TAN | | WHEAT.LAB.ABERDEEN.18 | | Not Available |
| MORPHOLOGY | Kernel Color | Color of the kernels. | 7 - TAN | | WHEAT.LAB.ABERDEEN.09B | PI 166591 TR97ID SD | Not Available |
| MORPHOLOGY | Awn Color | Color of the awns. | 1A - BLACK AND WHITE | | 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 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. | 1.176 | | WHEAT.AGRON.MARICOPA.04 | PI 166591 TR97ID SD | Not Available |
| PRODUCTION | 1000 Kernel Weight | Thousand kernel weight, based on a 30ml volume sample size.
| 56.2 | | WHEAT.LAB.ABERDEEN.09B | PI 166591 TR97ID SD | Not Available |