Home > VIII International Symposium on Pear > INSECT ATTRACTION OF FLOWERS IN PEAR CULTIVARS

Articles

INSECT ATTRACTION OF FLOWERS IN PEAR CULTIVARS

Article number

596_133

Pages

773 – 776

Language

English

Abstract

The dynamics of nectar secretion and pollen shedding, daily nectar production, nectar sugar composition and the histology of floral nectaries were studied in three pear cultivars in a Hungarian cultivar collection.
Nectar secretion was either continuous or discontinuous, depending on the cultivar and the season.
Pear flowers produced little and diluted nectar during 24 hours, refraction did not reach 20%. Sucrose was found in the nectar of one cultivar only, the secretory product of the other cultivars contained only fructose and glucose.
As a consequence, pear nectar was usually not attractive enough for honey bees, which preferred gathering pollen.

Publication

VIII International Symposium on Pear

Authors

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

Keywords

insects, nectar, nectary, pear, periodicity, pollen

Full text

https://doi.org/10.17660/ActaHortic.2002.596.133

Online Articles (158)

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

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

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S. Sansavini | S. Musacchi

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R.B. Elkins | T.M. DeJong

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J.W. Palmer

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S. Sansavini

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E.A. Mielke

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F. Stanica | M. Dumitrascu | A. Peticila

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E.E. Sánchez

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M. Iancu

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A.D. Webster

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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

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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

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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

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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

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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