Home > VIII International Symposium on Pear > NECTAR COMPOSITION IN SOME PEAR CULTIVARS

Articles

NECTAR COMPOSITION IN SOME PEAR CULTIVARS

Article number

596_131

Pages

761 – 765

Language

English

Abstract

Nectar production and nectar sugar composition of 39 pear cultivars were studied in a Hungarian cultivar collection.
Most studied cultivars produced little nectar with low sugar concentration.
The majority of the cultivars contained no or very little sucrose in the nectar and can be classified into the hexose-dominant or hexose-rich category on the basis of sucrose/glucose+fructose ratio.
The ratio of fructose and glucose is 4:6 in the nectar of cultivars containing only hexoses.

Publication

VIII International Symposium on Pear

Authors

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

Keywords

Hexose-dominant, hexose-rich, nectar, pear, TLC

Full text

https://doi.org/10.17660/ActaHortic.2002.596.131

Online Articles (158)

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M. Collina | I. Gherardi | A. Brunelli

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

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

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

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

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R. Buès | L. Boudinhon

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

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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

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R.B. Elkins | T.M. DeJong

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

J.W. Palmer

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J. Vercammen

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

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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