Descriptors for PEAR:
Category: COMMENT
  1. COMMENT FIELD (COMMENT1)
    GENERAL COMMENTS ABOUT THE ACCESSION

  2. COMMENTS OR EXPLANATIONS FROM (COMMENT2HD)
    ANY COMMENTS OR EXPLANATIONS OF DATA RESULTING FROM MID-WINTER COLD HARDINESS TESTS.

  3. COMMENTS OR EXPLANATIONS FROM (COMMENT3HD)
    COMMENTS OR EXPLANATIONS OF DATA FROM THE THIRD (LATE WINTER/EARLY SPRING) COLD HARDINESS TESTS.

  4. COMMENTS OR EXPLANATIONS OF DA (COMMENT1HD)
    COMMENTS OR EXPLANATIONS OF DATA FROM LATE FALL COLD HARDINESS STUDIES.

  5. LEAF WATER LOSS (LFWATLOSS)
    FRACTION OF TOTAL WATER LOST IN 24 HOURS RELATIVE TO (I.E. DIVIDED BY) STANDARD (CPYR 1441, PYRUS BETULIFOLIA).

Category: DISEASE
  1. FRUIT_SCAB (FRUITSCAB)
    RATING OF DAMAGE CAUSED BY FRUIT SCAB
    Code values.

  2. LEAF_SCAB (LEAFSCAB)
    RATING OF DAMAGE CAUSED BY LEAF SCAB
    Code values.

  3. MILDEW (MILDEW)
    RATING OF DAMAGE CAUSED BY MILDEW
    Code values.

  4. PSEUDOMONAS (PSEUDOMONA)
    RATING OF DAMAGE CAUSED BY PSEUDOMONAS
    Code values.

  5. RUST (RUST)
    RATING OF DAMAGE CAUSED BY RUST
    Code values.

Category: GROWTH
  1. TREE SYMMETRY (TRSYMMETRY)
    SYMMETRY OF TREE GROWTH
    Code values.

  2. TRUNK_DIAMETER (TRUNKDIAM)
    TRUNK DIAMETER MEASURED IN CENTIMETERS MEASUREMENT TAKEN WITH CALIPERS TWO FEET FROM GROUND

Category: INSECT
  1. BLISTER_MITES (BLSTRMITES)
    RATING OF DAMAGE CAUSED BY BLISTER MITES
    Code values.

Category: MORPHOLOGY
  1. BARK OTHER (BARKOTHER)
    SECONDARY BARK CHARACTERISTICS
    Code values.

  2. BARK TEXTURE (BRKTEXTURE)
    TEXTURE OF THE BARK
    Code values.

  3. BLOOM_DENSITY (BLOOMDENS)
    BLOOM DENSITY
    Code values.

  4. BRANCH ANGLE 1 (BRANANG1)
    LOWER LIMIT OF TYPICAL BRANCH ANGLE IN DEGREES

  5. BRANCH ANGLE 2 (BRANANG2)
    UPPER LIMIT OF TYPICAL BRANCH ANGLE IN DEGREES

  6. BRANCH DENSITY (BRANCHDENS)
    DENSITY OF BRANCHING
    Code values.

  7. BRANCH STIFFNESS (BRANCHSTIF)
    PHYSICAL (N.N. VISUAL) STIFFNESS OF BRANCHES
    Code values.

  8. CALYX (CALYX)
    CALYX
    Code values.

  9. CALYX_BASIN (CALYXBASIN)
    CALYX BASIN
    Code values.

  10. CARPEL_NUMBER (CARPELNUM)
    NUMBER OF CARPELS

  11. CAVITY (CAVITY)
    CAVITY
    Code values.

  12. CENTRAL LEADER (CENTLEADER)
    DOMINANCE OR PERSISTENCE OF THE CENTRAL LEADER
    Code values.

  13. CORE_BREAKDOWN (COREBREAK)
    DEGREE OF CORE BREAKDOWN, DETERMINED ON TREE RIPENED FRUIT
    Code values.

  14. DOTS (DOTS)
    DOTS
    Code values.

  15. FLAVOR (FLAVOR)
    FLAVOR OF FRUIT FLESH
    Code values.

  16. FLESH_COLOR (FLESHCOLOR)
    FLESH COLOR
    Code values.

  17. FLESH_COMMENT (FLESHCOMM)
    COMMENTS ON THE FRUIT FLESH

  18. FLESH_TEXTURE (FLESHTEXT)
    FLESH TEXTURE
    Code values.

  19. FRUITCORE (FRUITCORE)
    CORE
    Code values.

  20. GRIT (GRIT)
    NUMBER OF STONE CELLS
    Code values.

  21. GRIT_SIZE (GRITSIZE)
    SIZE AND LOCATION OF STONE CELLS
    Code values.

  22. GROUND_COLOR (GRNDCOLOR)
    GROUND COLOR
    Code values.

  23. LEAF LENGTH (LEAFLENGTH)
    TYPICAL LENGTH OF LEAF MEASURED IN CENTIMETERS

  24. LENTICELS (LENTICELS)
    NUMBER OF LENTICELS
    Code values.

  25. LENTICEL_SIZE (LENTSIZE)
    SIZE OF LENTICELS
    Code values.

  26. OVERCOLOR_AMT (OVERCOLAMT)
    PERCENT OF FRUIT SURFACE WITH OVERCOLOR

  27. OVER_COLOR (OVERCOLOR)
    OVERCOLOR
    Code values.

  28. OXIDATION (OXIDATION)
    OXIDATION OF CUT MEASURED AFTER 5 MINUTES
    Code values.

  29. PEDICEL_ATTACHMENT (PEDICELATT)
    PEDICEL ATTACHMENT
    Code values.

  30. QUALITY (QUALITY)
    QUALITY OF FRUIT FLESH A COMBINATION OF FLAVOR, TEXTURE AND AROMA
    Code values.

  31. RUSSET (RUSSET)
    AMOUNT OF RUSSETING
    Code values.

  32. RUSSET_LOCATION (RUSSETLOC)
    LOCATION OF RUSSETING
    Code values.

  33. SKIN_COMMENTS (SKCOMMENTS)
    COMMENTS ON SKIN CHARACTERISTICS

  34. SUMMER LEAF COLOR (LEAFCOLOR)
    SUMMER LEAF COLOR RECORDED AS HUE, NOT VALUE.
    Code values.

  35. TEXTURE_TYPE (TEXTTYPE)
    FLESH TEXTURE TYPE
    Code values.

  36. THORN ADULT (THORNADULT)
    PRESENCE OF THORNS AS ADULT
    Code values.

  37. THORN JUVENILE (THORNJUVEN)
    PRESENCE OF THORNS AS JUVENILE
    Code values.

  38. TREE SHAPE (TREESHAPE)
    OVERALL SHAPE OF TREE SILHOUETTE
    Code values.

Category: PHENOLOGY
  1. CHILL UNIT 1 (FTCHILUNIT)
    CHILL UNITS ACCRUED UNTIL FIRST (LATE FALL) COLD HARDINESS TESTS.

  2. CHILL UNIT 3 (TRDCHILLUN)
    NUMBER OF CHILL UNITS ACCUMULATED UNTIL THIRD (LATE WINTER, EARLY SPRING) COLD HARDINESS TESTING.

  3. FIRST_BLOOM (FIRSTBLOOM)
    JULIAN DATE OF FIRST BLOOM

  4. FIRST_RIPE (FIRSTRIPE)
    JULIAN DATE OF FIRST RIPE FRUIT

  5. FULL_BLOOM (FULLBLOOM)
    JULIAN DATE OF FULL BLOOM

  6. FULL_RIPE (FULLRIPE)
    JULIAN DATE OF FULL RIPE FRUIT

  7. LAST_BLOOM (LASTBLOOM)
    JULIAN DATE OF LAST BLOOM

  8. LAST_RIPE (LASTRIPE)
    JULIAN DATE OF LAST RIPE FRUIT

  9. MAXIMUM FIRST BRANCH AGE (FTBRNCAGE2)
    MAXIMUM AGE IN YEARS OF BRANCH PIECES TESTED IN LATE FALL COLD HARDINESS TESTS.

  10. MAXIMUM SECOND BRANCH AGE (SECBRNCHA2)
    MAXIMUM AGE IN YEARS OF BRANCH PIECES TESTED IN MID-WINTER COLD HARDINESS TESTS.

  11. MAXIMUM THIRD BRANCH AGE (TRDBRNCHA2)
    MAXIMUM AGE IN YEARS OF BRANCH PIECES TESTED IN LATE WINTER / EARLY SPRING COLD HARDINESS TESTS.

  12. MINIMUM FIRST BRANCH AGE (FTBRNCAGE1)
    MINIMUM AGE IN YEARS OF BRANCH PIECES TESTED IN LATE FALL COLD HARDINESS TESTS.

  13. MINIMUM SECOND BRANCH AGE (SECBRNCHA1)
    MINIMUM AGE IN YEARS OF BRANCH PIECES TESTED IN MID-WINTER COLD HARDINESS TESTS.

  14. MINIMUM THIRD BRANCH AGE (TRDBRNCAGE)
    MINIMUM AGE IN YEARS OF BRANCH PIECES TESTED IN LATE WINTER / EARLY SPRING COLD HARDINESS TESTS.

  15. PHENOLOGICAL STAGE AT THIRD HA (TRDPHSTAGE)
    PHENOLOGICAL STAGE OF BUDS AT TIME OF THIRD (LATE WINTER/EARLY SPRING) COLD HARDINESS TESTS.
    Code values.

  16. SECOND CHILL UNIT (SECCHILLUN)
    CHILL UNITS ACCRUED UNTIL SECOND (MID-WINTER) COLD HARDINESS TEST.

Category: PRODUCTION
  1. CHILLING REQUIREMENT (CHILLUNITS)
    THE CHILLING UNITS REQUIRED TO BREAK DORMANCY

  2. PRECOCITY (PRECOCITY)
    NUMBER OF YEARS FROM PLANTING TO FIRST FRUIT

  3. YIELD (YIELD)
    YIELD (PRODUCTIVITY)
    Code values.

Category: STRESS
  1. BUD KILL AFTER MID-WINTER TEST (BUDKILL2)
    MAXIMUM TEMPERATURE (DEGREES F) AT WHICH 50% OR MORE OF THE BUDS WERE KILLED (TESTED AT 5 DEGREE INTERVALS.

  2. FIRST BUD KILL (BUDKILL1)
    MAXIMUM TEMPERATURE (DEGREES F) AT WHICH 50% OR MORE OF BUDS WHERE KILLED (TESTED AT 5 DEGREE INTERVALS).

  3. FIRST CALLUS FORMED (FIRSTCALUS)
    MINIMUM TEMPERATURE (DEGREES F) AT WHICH CALLUS TISSUE WAS FORMED FOLLOWING LATE FALL COLD HARDINESS TEST (TESTED AT 5 DEGREE INTERVALS).

  4. FIRST CAMBIUM SURVIVAL (FSTCAMBIUM)
    MINIMUM TEMPERATURE (DEGREES F) AT WHICH THERE WAS UNEQUIVOCAL SURVIVAL OF A MAJORITY OF THE CAMBIAL PIECES TESTED (TESTED AT 5 DEGREE INTERVALS).

  5. SECOND CAMBIUM SURVIVAL (SECCAMBIUM)
    MINIMUM TEMPERATURE (DEGREES F) AT WHICH THE MAJORITY OF CAMBIUM PIECES UNEQUIVOCALLY SURVIVED (TESTED AT 5 DEGREE INTERVALS).

  6. THIRD BUD KILL (BUDKILL3)
    HIGHEST TEMPERATURE (DEGREES F) AT WHICH 50% OR MORE OF THE FLOWER BUDS WERE KILLED. (TESTED AT 5 DEGREE INTERVALS).

  7. THIRD CAMBIUM SURVIVAL (TRDCAMBIUM)
    MINIMUM TEMPERATURE (DEGREES F) AT WHICH THE MAJORITY OF THE CAMBIUM PIECES UNEQUIVOCALLY SURVIVED (TESTED AT 5 DEGREE INTERVALS).

Category: Uncategorized Descriptors
  1. CORE SUBSET (CORE)
    A flag to indicate the accession is part of the core subset
    Code values.