Home > VIII International Symposium on Pear > MICROSCOPIC STUDIES OF SCAB RESISTANCE SYMPTOMS (VENTURIA PIRINA) ON LEAVES OF PEAR CULTIVARS (PYRUS COMMUNIS)

Articles

MICROSCOPIC STUDIES OF SCAB RESISTANCE SYMPTOMS (VENTURIA PIRINA) ON LEAVES OF PEAR CULTIVARS (PYRUS COMMUNIS)

Article number

596_92

Pages

543 – 546

Language

English

Abstract

Pear scab is a serious disease: there is no commercial variety completly resistant to this disease.
The biotype diversity of Venturia pirina, the absence of major resistant genes and the resistance variability prevent a good definition of resistance symptoms.
In this work sixteen cultivars were inoculated with local inoculum of V. Pirina. The symptoms obtained were studied using light and scanning electron microscopy.
Four groups of symptoms are described: necrotic reaction, strong resistance with reduced conidiogenesis, weak resistance with strong conidiogenesis, and susceptibility.
Among the varieties, some are oustanding in their high level of resistance.

Publication

VIII International Symposium on Pear

Authors

M. Chevalier, P. Guerif, M. Tellier, F. Cheve, M. Le Lézec, Y. Lespinasse, R. Filmon

Keywords

conidiogenesis, hypersensitivity, partial resistance, scanning electron microscopy, histology

Full text

https://doi.org/10.17660/ActaHortic.2002.596.92

Online Articles (158)

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3. THE WORLD PEAR INDUSTRY: CURRENT TRENDS AND PROSPECTS

A. A. Segrè

4. PEAR PRODUCTION AND UTILIZATION IN NORTH AMERICA

G. Ing

5. PEAR PRODUCTION IN SOUTH AMERICA

E.E. Sanchez

6. PEAR PRODUCTION IN NORTHERN EUROPE

G. Bünemann | M. Groot | H. Kemp

7. PEAR INDUSTRY YIELD TRENDS IN SOUTHERN EUROPE: DISTRICTS AND CULTIVARS

V. Mazzotti | G. Miotto | E. Macchi

8. THE PEAR INDUSTRY IN EASTERN EUROPE

N. Braniste

9. THE PEAR INDUSTRY IN ASIA

H. Gemma

10. THE PEAR INDUSTRY IN AUSTRALIA, NEW ZEALAND AND SOUTH AFRICA: PRODUCTION, TRADE AND CULTIVARS

A.G. White | K.I. Theron | J. Purbrick

11. THE PEAR INDUSTRY OF HIMACHAL PRADESH IN INDIA

N. Sharma | D.R. Gautam | K.K. Jindal | D.P. Sharma

12. THE NASHI INDUSTRY IN JAPAN

H. Gemma

13. THE ECONOMIC COSTS AND RETURNS OF GROWING PEARS ON OREGON, WASHINGTON, AND CALIFORNIA, USA

C.F. Seavert

14. AN ECONOMIC ANALYSIS OF THE AGRICULTURAL SIDE OF PEAR SUPPLY-CHAIN IN SOUTHERN EUROPE AND CHINA

C. Pirazzoli | M. Canavari | H. Huliyeti

15. AN EVALUATION OF THE ECONOMIC BENEFITS OF ADOPTING SITE-SPECIFIC MANAGEMENT TECHNOLOGIES IN THE TREE FRUIT INDUSTRY

C.F. Seavert | F. Niederholzer

16. ITALY´S DOMESTIC PEAR RETAIL SALES

M. Ori | V. Mazzotti

17. PEAR BIOTECHNOLOGY: RECENT PROGRESSES AND FUTURE BREEDING APPLICATIONS

E. Chevreau

18. CAN WE DEVELOP SELF-FERTILE FRUIT TREES THROUGH GENETIC ENGINEERING?

I. Van Nerum | J. Keulemans | W. Broothaerts

19. S-ALLELE CHARACTERIZATION IN SELF-INCOMPATIBLE PEAR (PYRUS COMMUNIS): BIOCHEMICAL, MOLECULAR AND FIELD ANALYSES

20. GENE FLOW BY POLLEN TO “LEMON BERGOMOT” PEAR CULTIVAR USING ISOZYME MARKERS

M. Sharifani | J.F. Jackson

21. THE IMPORTANCE OF INDUCED MUTATIONS IN PEAR IMPROVEMENT

S. Predieri

22. PLANT-DEFENSIN GENES INTRODUCTION FOR IMPROVEMENT OF PEAR PHYTOPATHOGEN RESISTANCE

V.G. Lebedev | S.V. Dolgov | N. Lavrova | V.G. Lunin | B.S. Naroditski

23. FIRST DOUBLED HAPLOID PLANTS OF PEAR (PYRUS COMMUNIS)

L. Bouvier | P. Guerif | M. Djulbic | Y. Lespinasse

24. ISOENZYMIC POLYMORPHISM IN PEAR

A.G. Manganaris | C.G. Tsipouridis

25. EXPRESSION ANALYSIS OF JPRXYL GENE DURING FRUIT RIPENING IN SEVERAL PEAR CULTIVARS

A. Itai | K. Yoshida | K. Tanabe | F. Tamura

26. DISCRIMINATION OF PEAR CULTIVARS WITH RAPD, AFLP^TM AND ISSR

L. Monte-Corvo | L. Goulão | C. Oliveira

27. TRANSGENIC PEAR CLONAL ROOTSTOCKS RESISTANT TO HERBICIDE “BASTA”

V.G. Lebedev | S.V. Dolgov | K.G. Skryabin

28. PEAR TRANSFORMATION WITH THE GENE FOR SUPERSWEET PROTEIN THAUMATIN II

V.G. Lebedev | S.A. Taran | V.V. Shmatchenko | S.V. Dolgov

29. FACTORS AFFECTING AGROBACTERIUM-MEDIATED TRANSFORMATION OF WILD PEAR (PYRUS COMMUNIS, VAR PYRASTER)

E. Caboni | P. Lauri | B. Watillon

30. CLONING AND CHARACTERIZATION OF RESISTANCE GENE ANALOGS (RGA) IN EUROPEAN PEAR (PYRUS COMMUNIS)

L. Dondini | S. Tartarini | E. Nocelli | S. Sansavini

31. REACTIVITY OF EUROPEAN PEAR (PYRUS COMMUNIS) PROGENIES TO FIRE BLIGHT (ERWINIA AMYLOVORA)

L. Dondini | S. Tartarini | S. Sansavini | S. Malaguti | C. Bazzi

32. BREEDING FOR NEW TRAITS IN PEAR

E. Bellini | S. Nin

33. NEW NAUMBURG/PILLNITZ PEAR BREEDING RESULTS

M. Fisher | G. Mildenberger

34. THIRTY YEARS OF PEAR BREEDING ACTIVITY AT ISF FORLÌ, ITALY

L. Rivalta | M. Dradi | C. Rosati

35. THE NEW ZEALAND PEAR BREEDING PROJECT

A.G. White | L.R. Brewer

36. SELECTION OF SUPERIOR CLONES OF EUROPEAN PEARS IN HIMACHAL PRADESH, INDIA

D.R. Gautam | N. Sharma

37. ACHIEVEMENTS OF PEAR BREEDING IN KOREA

L.S. Shin | W.C. Kim | H.S. Hwang | Y.U. Shin

38. PEAR BREEDING AND CULTIVAR EVALUATION IN POLAND

D.E. Kruczynska | A. Czynczyk

39. HYBRIDISATION OF EUROPEAN AND NASHI PEARS: SELECTING FOR NOVEL TASTE TRAITS

S. Sansavini | S. Musacchi | G.L. Ferrazzano | V. Ancarani

40. ACHIEVEMENTS AND PROSPECTIVES IN PEAR BREEDING AT THE FRUIT RESEARCH STATION VOINESTI, ROMANIA

N. Andreies

41. “ANGELYS”, A NEW WINTER PEAR TO REPLACE “PASSE CRASSANE”

M. Le Lézec | A. Belouin | P. Guérif | Y. Lespinasse

42. ‘SABINA’: A NEW SUMMER PEAR CULTIVAR

E. Bellini

43. ‘TURANDOT’, ‘NORMA’ AND ‘CARMEN’: THREE NEW EARLY PEAR CULTIVARS FOR HIGH-QUALITY PRODUCTION

L. Rivalta | M. Dradi

44. FIREBLIGHT EVALUATION OF ADVANCED ITALIAN SELECTIONS AND CULTIVARS OF PEAR

45. EVALUATION OF EUROPEAN PEAR (PYRUS COMMUNIS) FOR JAPAN’S FRESH MARKET

H. Bessho | K. Sadao | J. Soejima

46. INTRODUCTION OF SOME ASIAN PEAR CULTIVARS (PYRUS PYRIFOLIA) TO IRAN

K. Arzani

47. WILD PEAR SPECIES IN HUNGARY

D. Surányi

48. ROOTSTOCKS FOR EUROPEAN PEAR: A REVIEW

S.J. Wertheim

49. PERFORMANCE OF ‘CONFERENCE’ CULTIVAR ON SEVERAL QUINCE AND PEAR ROOTSTOCKS: PRELIMINARY RESULTS

F. Loreti | R. Massai | C. Fei | F. Cinelli

50. FINAL EVALUATION OF THE NC140 NATIONAL PEAR ROOTSTOCK TRIAL

51. EVALUATION OF THE HORNER ROOTSTOCKS

E.A. Mielke | L. Smith

52. WILD PEAR SEEDLING ROOTSTOCKS FOR PEAR SCIONS

D. Surányi | Z. Erdos

53. NEW PEAR ROOTSTOCKS FROM GEISENHEIM, GERMANY

H.B. Jacob

54. ACHIEVEMENTS IN BREEDING OF ROMANIAN CLONAL PEAR ROOTSTOCKS

C. Mazilu

55. ‘PYRIAM’: A NEW PEAR ROOTSTOCK

M.H. Simard | J.C. Michelesi

56. SELECTION PROGRAMME OF PYRUS COMMUNIS ROOTSTOCKS AT CIV CONSORZIO ITALIANO VIVAISTI

M. Leis | A. Martinelli

57. THE BEHAVIOUR OF QUINCE SELECTIONS AS PEAR ROOTSTOCKS FOR ‘ABBÉ FÉTEL’ AND ‘CONFERENCE’ PEAR CULTIVARS IN THE RIO NEGRO VALLEY, ARGENTINA

H.R. Castro | R.O. Rodríguez

58. TEN YEARS OF PEAR PRODUCTION AND PRECOCITY DATA FROM A COMMERCIAL PEAR ORCHARD COMPARING EIGHT OLD HOME BY FARMINGDALE CLONAL ROOTSTOCKS

G. Ing

59. THE BEHAVIOUR OF ‘OLD HOME’ X ‘FARMINGDALE’ SELECTIONS AS INTERSTOCKS IN PEAR/QUINCE COMBINATIONS, IN RIO NEGRO VALLEY, ARGENTINA

R.O. Rodríguez | H.R. Castro

60. ‘ROCHA’ PERFORMANCE ON EMLA-C ROOTSTOCK – TWENTY YEARS OF OBSERVATIONS

A. Santos | A. Silva | J. Alexandre | M. Carvalho | R. Castro

61. COMPARATIVE FIELD PERFORMANCE OF CVS. SENSATION RED BARTLETT AND CASCADE GRAFTED TO SIX QUINCE AND PEAR CLONAL SEEDLING ROOTSTOCKS

S. Musacchi | V. Ancarani | M. Grandi | S. Sansavini

62. VARIATION OF SOME ENZYMATIC ACTIVITIES IN RELATIONSHIP TO SCION/STOCK COMPATIBILITY IN PEAR/QUINCE COMBINATIONS

S. Musacchi | A. Masia | J. Fachinello

63. STUDY OF GENE EXPRESSION IN COMPATIBLE AND INCOMPATIBLE PEAR/PEAR AND PEAR/QUINCE GRAFTS BY MRNA DIFFERENTIAL DISPLAY

64. EFFECT OF BUDDING HEIGHT ON TREE SIZE AND PRECOCITY

E.A. Mielke | L. Smith

65. EVALUATION OF PEAR INTERSTEMS

E.A. Mielke | J. Turner

66. BEHAVIOUR OF FOUR OVER GRAFTED CHINESE PEAR VARIETIES (PYRUS SEROTINA) IN BUCURESTI AREA

F. Stanica

67. IN VITRO TISSUE CULTURE OF PEAR: ADVANCES IN TECHNIQUES FOR MICROPROPAGATION AND GERMPLASM PRESERVATION

R.L. Bell | B.M. Reed

68. THE PROPAGATION OF PYRUS SYRIACA BY SEEDS AND STEM CUTTINGS

F.M. Al-Bukhari | M.M. Qrunfleh | D.M. Al-Eisawi

69. MICROPROPAGATION OF PEAR THROUGH TEMPORARY IMMERSION

C. Damiano | A. Frattarelli | M. Giorgioni

70. VASCULAR TISSUE REGENERATION IN ”IN VITRO” GRAFTS OF PEAR/QUINCE

L. Espen | M. Cocucci | G.A. Sacchi

71. COMPARISON OF DECONTAMINATING TREATMENTS ON AGROBACTERIUM-INOCULATED INTERNODE EXPLANTS OF ‘BARTLETT’ PEAR

P. Negri | L. Manzecchi

72. EFFECTS OF HORMONAL CONDITIONING OF PEAR LEAF EXPLANTS ON AGROBACTERIUM-MEDIATED TRANSFORMATION EFFICIENCY

P. Negri | L. Cantoni | L. Manzecchi

73. IN VITRO ROOTING AND SHOOT GROWTH OF PYRUS BETULAEFOLIA ROOTSTOCK

74. ROOTING OF HARDWOOD CUTTINGS OF PYRUS CALLERYANAI IN RESPONSE TO SHADING, OPAQUE WRAPPING, AND IBA

75. INFLUENCE OF TEMPERATURE AND SUCROSE ON IN VITRO PROLIFERATION OF PYRUS CALLERYANA

M. Pasqual | J.M. Cavalcante-Alves | N.N.J. Chalfun | L.F. Dutra | J.V. Bianchi

76. IMPROVED CULTURE MEDIA FOR THE IN VITRO ESTABLISHMENT OF PEAR FROM NODAL CUTTINGS

I.C.G. Freire | C.P.S. Coelho | M.T.F. Barros

77. IN VITRO ROOTING OF PYRODWARF AND CYDOMALUS, TWO ROOTSTOCKS FOR PEAR, UNDER PHOTOAUTOTROPHIC CONDITIONS

G. De Paoli | E. Subirà | A. Battistini

78. INFLUENCE OF VARIOUS FACTORS ON ADVENTITIOUS SHOOT FORMATION FROM PEAR LEAF EXPLANTS

V.G. Lebedev | S.V. Dolgov

79. STANDARD AND COMPACT PEAR CLONES IN VITRO SENSITIVITY TO CYTOKININS

E. Gatti | S. Predieri

80. IN VITRO PRODUCTION OF VIRUS-FREE PEAR PLANTS

81. ELIMINATION OF APPLE CHLOROTIC LEAF SPOT VIRUS (ACLSV) FROM PEAR BY IN VITRO THERMOTHERAPY AND CHEMOTHERAPY

M. Cieslinska

82. DEVELOPMENT OF PROTOCOLS FOR IN VITRO ROOTING OF ADVANCED SELECTIONS OF PYRUS COMMUNIS ROOTSTOCKS

A. Previati | F. Da Re | D. Bassi | M. Tagliavini | B. Marangoni

83. ENVIRONMENT FRIENDLY PEST-CONTROL STRATEGIES IN PEAR: STATE OF THE ART AND PROSPECTS

E. Pasqualini

84. FUNGAL AND BACTERIAL PESTS IN PEAR GROWING

T. Deckers

85. FIVE YEARS OF MATING DISRUPTION IN COMBINATION WITH NARROW-RANGE PETROLEUM SPRAY OIL TO CONTROL PEAR PEST IN SOUTHERN OREGON

P. VanBuskirk | R. Hilton | P. Westigard

86. HOST-SPECIFIC SV-TOXIN OF THE FUNGAL PATHOGEN CAUSING BROWN SPOT OF EUROPEAN PEAR

87. INDUCTION OF PATHOGEN RESISTANCE IN PEAR BY TRANSIENTLY ALTERING THE FLAVONOID METABOLISM WITH SPECIFIC ENZYME INHIBITORS

88. THE USE OF CLIMATIC DATA FOR INTEGRATED MANAGEMENT OF PEARS: FORECASTING FIRE BLIGHT

S.M. Abol-Maatey | M.A. Medany | A.F. Abou-Hadid | N.Y. Abd El-Ghafar | I.S. Elewa

89. ELIMINATION OF VIRUSES FROM THE USDA PYRUS GERMPLASM COLLECTION

J.D. Postman | D. Sugar

90. THE EFFECT OF PROHEXADIONE-CA ON VEGETATIVE AND CROPPING PERFORMANCE AND FIRE BLIGHT CONTROL OF PEAR TREES

91. EPIDEMIOLOGICAL STUDIES OF FIRE BLIGHT (ERWINIA AMYLOVORA) IN SPAIN

I. Llorente | A. Badosa | P. Vilardell | E. Montesinos

92. FIELD EVALUATION OF A BROWN SPOT DISEASE PREDICTOR AS A SYSTEM FOR SCHEDULING FUNGICIDE SPRAYS FOR CONTROL OF STEMPHYLIUM VESICARIUM ON PEAR

93. MICROSCOPIC STUDIES OF SCAB RESISTANCE SYMPTOMS (VENTURIA PIRINA) ON LEAVES OF PEAR CULTIVARS (PYRUS COMMUNIS)

94. ACQUIRED RESISTANCE OF STEMPHYLIUM VESICARIUM TO PROCYMIDONE ON PEAR IN ITALY

M. Collina | I. Gherardi | A. Brunelli

95. PATULIN AND OTHER METABOLITES PRODUCED BY FUNGI IN PEARS

L.A. Laidou | C.C. Thanassoulopoulos | M. Liakopoulou-Kyriakides

96. DETECTION OF PEAR DECLINE PHYTOPLASMA WITH SPECIAL REFERENCE TO THE PRODUCTION OF HEALTHY PLANT MATERIAL

C. Poggi Pollini | R. Bissani | A.R. Babini | M. Cardoni | V. Vicchi

97. NEW ENVIRONMENTALLY FRIENDLY PRPDUCTS AGAINST PSYLLA (PSYLLA PYRICOLA)

C.G. Tsipouridis | A.G. Manganaris | I. Kajati

98. FACTORS INFLUENCING THE CHANGES IN POPULATION STATE OF PEAR SUCKERS (CACOPSYLLA SP.) IN POLAND

K. Jaworska | R.W. Olszak | R.Z. Zajac

99. INSECTICIDE RESISTANCE IN THE PEAR PSYLLA

R. Buès | L. Boudinhon

100. VARIATION IN THE SUSCEPTIBILITY OF PEAR SEEDLINGS TO DAMAGE BY THE LARVAE OF THE SAWFLY (CALIROA CERASI)

L.R. Brewer | P.A. Alspach | A.G. White

101. THE DENSITY OF PEAR RUST MITE EPITRIMERUS PIRI (NALEPA) ON SOME PEAR CULTIVARS IN CENTRAL POLAND

T. Badowska-Czubik | D. Kruczynska | E. Pala

102. CONCENTRATED SPRAY APPLICATIONS IN PEAR TRELLISING

J.C. Magdalena | E. Sanchez | S. Bemher

103. ORGANIC PEAR PRODUCTION IN THE RIO NEGRO VALLEY OF ARGENTINA

L.I. Cichón | M.D. Raffo | E. Sànchez

104. EUROPEAN PEAR ORCHARD DESIGN AND HDP MANAGEMENT: A REVIEW

S. Sansavini | S. Musacchi

105. EFFECT OF TRAINING SYSTEM AND ROOTSTOCK ON GROWTH AND PRODUCTIVITY OF GOLDEN RUSSET® BOSC PEAR TREES

R.B. Elkins | T.M. DeJong

106. EFFECT OF SPACING AND ROOTSTOCK ON THE PERFORMANCE OF ‘COMICE’ PEAR IN NEW ZEALAND

J.W. Palmer

107. INFLUENCE OF THE PLANT AND PRUNING SYSTEM ON THE FINANCIAL RESULT OF ‘CONFERENCE’

J. Vercammen

108. EUROPEAN PEAR ARCHITECTURE AND FRUITING-BRANCH MANAGEMENT: OVERVIEW OF AN INRA RESEARCH PROGRAM

P.E. Lauri | E. Costes | A. Belouin

109. PEAR FRUITING-BRANCH MODELS RELATED TO YIELD CONTROL AND PRUNING

S. Sansavini

110. THE BI-COLOURED PEARS ‘ROSEMARIE’ AND ‘FLAMINGO’: CHARACTERISTICS, PRODUCTION PROBLEMS AND POSSIBLE SOLUTIONS

J.P. Human

111. EFFECTS OF TRUNK GIRDLING ON TREE GROWTH, FRUIT PRODUCTION, AND FIRE BLIGHT

C. Ingels

112. D’ANJOU AND BOSC FRUIT QUALITY AS AFFECTED BY ROOTSTOCK AND TRAINING SYSTEM

E.A. Mielke

113. BEHAVIOUR OF THREE PEAR CULTIVARS PROPAGATED IN VITRO AND SELF-ROOTED, ON TATURA TRELLIS CANOPY

F. Stanica | M. Dumitrascu | A. Peticila

114. NITROGEN NUTRITION IN PEAR ORCHARDS

E.E. Sánchez

115. WATER STRESS LIMITS FOR VEGETATIVE AND REPRODUCTIVE GROWTH OF BARLETT PEARS

J. Marsal | M. Mata | A. Arbonàs | J. Rufat | J. Girona

116. DETERMINATION OF LEAF STANDARDS FOR MINERAL DIAGNOSIS IN PEAR ORCHARDS IN THE PO VALLEY, ITALY

M. Toselli | F. Mazzanti | B. Marangoni | M. Tagliavini | D. Scudellari

117. USE OF UREA-SULFURIC ACID AND IRON CHELATE TO MITIGATE IRON CHLOROSIS IN PEAR

R.B. Elkins | R.D. Meyer | C.D. Adams

118. DIFFERENT RESPONSES INDUCED BY BICARBONATE AND IRON DEFICIENCY ON MICROSHOOTS OF QUINCE AND PEAR

R. Muleo | M. Fisichella | C. Iacona | R. Viti | F. Cinelli

119. EFFECTS OF ROOTSTOCK ON THE PHYSIOLOGICAL RESPONSE OF PEAR CULTIVAR ABBÉ FÉTEL TREES TO INCREASING LEVELS OF SALINITY OF THE IRRIGATION WATER

120. EFFECTS OF REGULATED DEFICIT IRRIGATION ON THE PERFORMANCE OF PEAR IN AN ITALIAN SUB-HUMID AREA

S. Aconelli | P. Mannini

121. INFLUENCE OF RELIEF AND EROSION CONTROL SYSTEMS ON EVAPOTRANSPIRATION IN PEAR TREES

M. Iancu

122. FACTORS INFLUENCING THE FLOWERING, FRUIT SET AND FRUIT GROWTH OF EUROPEAN PEARS

A.D. Webster

123. PEAR TREE SHOOT GROWTH PATTERNS IN RELATION TO CHEMICAL CONTROL OF VEGETATIVE GROWTH WITH PROHEXADIONE-CALCIUM (APOGEE^®)

D.C. Elfving | D. Sugar | D. Faubion

124. ETHEPHON, NAA, AND NAD AS CHEMICAL THINNERS OF PEAR FRUITLETS

C. Bonghi | M. Poja | A. Ramina

125. REDUCING SECONDARY FLOWERING IN BARTLETT PEAR TO REDUCE FIRE BLIGHT

S.M. Southwick | K. Glozer | J.T. Yeager | R. Moran

126. THE EFFECT OF BLOSSOM DESICCANTS ON CROP LOAD OF PACKHAM¿S TRIUMPH PEAR

S.A. Bound | L. Mitchell

127. IMPROVEMENT OF FRUIT SET ON YOUNG PEAR TREES CULTIVAR CONFERENCE WITH GIBBERELLINS

T. Deckers | H. Schoofs

128. LEAF ANATOMY AND PHOTOSYNTHESIS OF PEAR TREES WITH DIFFERENT GROWTH HABIT

A. Rotondi | S. Predieri

129. INFLUENCE OF LEAF AREA ON THE SUGAR AND ORGANIC ACIDS CONTENT IN PEAR (PYRUS COMMUNIS) FRUITS CULTIVAR WILLIAMS

M. Hudina | F. Štampar

130. CONTROLLING VIGOUR AND COLOUR DEVELOPMENT IN THE BI-COLOURED PEAR CULTIVAR ROSEMARIE

K.I. Theron | M. Le Grange | M. Smit | S. Reynolds | G. Jacobs

131. EFFECTS OF PROHEXADIONE-CALCIUM (APOGEE¿) ON BLOSSOMING, PRODUCTION, AND FRUIT QUALITY IN PEAR

D. Sugar | D.C. Elfving | E.A. Mielke

132. NECTAR COMPOSITION IN SOME PEAR CULTIVARS

A. Farkas | L. Gy. Szabó | Z.S. Orosz-Kovács

133. EFFECTS OF RETAIN™ ON FRUIT MATURITY AND FRUIT SET OF PEAR CULTIVARS WILLIAMS AND PACKHAM¿S TRIUMPH

M.C. Dussi | D. Sosa | G.S. Calvo

134. INSECT ATTRACTION OF FLOWERS IN PEAR CULTIVARS

A. Farkas | ZS. Orosz-Kovács | L. Gy. Szabó

135. EFFECT OF CROPLOAD IN PREVIOUS YEAR ON FRUIT SIZE OF PEAR CULTIVAR CLARA FRIJS

M. Bertelsen

136. GROWTH OF CLARA FRIJS PEAR IN A NORDIC CLIMATE

M. Bertelsen

137. CHEMICAL THINNING IN NASHI

S.A. Bound | Mitchell

138. A NEW POST-BLOOM THINNING AGENT FOR PACKHAM¿S TRIUMPH PEAR

S.A. Bound | L. Mitchell

139. EFFECT OF THE SYNTHETIC CYTOKININ CPPU ON FRUIT SIZE AND YIELD OF SPADONA PEAR

R.A. Stern | M.A. Flaishman | A. Shargal

140. THE QUALITY OF PEAR FRUIT

P. Eccher Zerbini

141. VOLATILE CONSTITUENTS OF ’HARROW‘ SWEET PEARS BY DYNAMIC HEADSPACE TECHNIQUE

F. Rapparini | S. Predieri

142. STUDIES ON SENSORY EVALUATION AND QUALITY OF PEAR FRUITS IN EMILIA-ROMAGNA

S. Predieri | D. Missere | E. Gatti

143. NON-DESTRUCTIVE DETERMINATION OF INTERNAL QUALITY IN INTACT PEARS BY NEAR INFRARED SPECTROSCOPY

G. Costa | M. Noferini | C. Andreotti

144. CHANGES IN CONFERENCE PEAR PEEL PIGMENTS DURING STORAGE AND RIPENING

J.M. Ben | J. Baszczyk

145. POSTHARVEST PHYSIOLOGY AND PATHOLOGY OF PEARS

D. Sugar

146. HARVEST MATURITY, MINERAL CONTENT AND POSTHARVEST QUALITY OF CONFERENCE PEARS STORED IN HIGH OR LOW CO₂

147. STUDY ON WATERCORE OCCURRENCE IN HOSUI JAPANESE PEAR

H. Gemma | S. Oomori | S. Sugaya | S-A. Peng | S. Iwahori

148. INFLUENCE OF CALCIUM AND OXYGEN LEVELS ON SOFT SCALD OF STORED ABBE FETEL PEARS

P. Bertolini | M. Guizzardi | C. Casadei

149. DOES BORON AFFECT THE OCCURRENCE OF PHYSIOLOGICAL DISORDERS OF CONFERENCE PEARS DURING CA-STORAGE?

H. Xuan | J. Streif | F. Bangereth

150. CHLOROPHYLL FLUORESCENCE AS A PREDICTIVE METHOD FOR DETECTION OF BROWNING DISORDERS IN CONFERENCE PEARS DURING CONTROLLED ATMOSPHERE STORAGE

A.A. Saquet | J. Streif

151. COMPOSITION OF HEXANE EXTRACTS FROM CONFERENCE PEAR PEEL

R. Lo Scalzo | P. Eccher Zerbini | M. Grassi

152. CHANGES IN STARCH CONTENT IN LA FRANCE PEARS DURING STORAGE

H. Murayama | S. Ikai | T. Fukushima

153. INFLUENCE OF HARVEST DATE AND STORAGE ON H₂O₂ AND SCAVENGER SYSTEMS IN ‘PASSE CRASSANE’ PEARS

A.M. Spinardi | C. Visai | N. Negrini | M. Coccuci

154. CONTROL OF SUPERFICIAL SCALD IN BEURRÉ D’ANJOU PEARS WITH LOW OXYGEN LEVELS

G. Calvo | M.E. Salvador | E. Sanchez

155. COMBINATION OF PSEUDOMONAS FLUORESCENS EPS288 AND REDUCED FUNGICIDE DOSE FOR CONTROL OF PENICILLIUM ROT DURING POSTHARVEST STORAGE OF PEAR

J. Francés | A. Bonaterra | E. Badosa | E. Montesinos

156. FUNGI THAT CAUSE POSTHARVEST DISEASES IN PEARS

I.A. Laidou | C.C. Thanassoulopoulos

157. EFFECT OF SHORT-TERM EXPOSURE TO HIGH CO₂ IN COMBINATION WITH BIOLOGICAL CONTROL ON POSTHARVEST DECAY OF PEARS, AND FACTORS AFFECTING SENSITIVITY OF PEARS TO CO₂ INJURY

D. Sugar | J.M. Benbow

158. STORAGE OF CONFERENCE PEAR IN LOW ETHYLENE ATMOSPHERE

A. Testoni | F. Lovati | M. Grassi | R. Lo Scalzo