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Articles

THE ROLE OF CULLULASE IN THE ABSCISSION OF CITRUS LEAVES AND FRUITS IN RELATION TO EXOGENOUS TREATMENTS WITH GROWTH REGULATORS

Article number

34_48

Pages

359 – 362

Language

Abstract

A comparative study of abscission in explants of citrus leaves and young and mature fruits showed that increase in cellulase activity precedes separation in all cases.
The rise in enzyme activity and the separation are delayed by auxins and enhanced by ethylene.
It is suggested that cellulase plays an important role in late abscission stages by affecting cell-wall degradation.
The possibility that other enzymes are involved at the very early stages of abscission, especially of mature fruits, is discussed.

Publication

Symposium on growth Regulators in Fruit Production

Authors

R. Goren, G. Teitelbaum, A. Ratner

Keywords

Full text

https://doi.org/10.17660/ActaHortic.1973.34.48

Online Articles (68)

2. SESSION I – BASIC SUBJECTS – HORMONAL ASPECTS OF FRUIT PRODUCTION

J. Bruinsma

3. NATURALLY OCCURRING PLANT GROWTH REGULATORS AND THEIR PHYSIOLOGICAL ROLES IN FRUIT TREES

L.E. Powell Jr

4. REGULATION OF ETHYLENE AS AN AGRICULTURAL PRACTICE

P.W. Morgan

5. EFFECTS OF SOME GROWTH REGULATORS ON THE CO₂ EXCHANGES OF LEAVES

R. Marcelle | G. Oben

6. EFFECTS OF SADH ON THE LEVELS OF DIFFUSIBLE AND EXTRACTABLE GIBBERELLINS IN THE APICES OF SWEET CHERRY

K. Ryugo | S. Sansavini | G. Cristoferi

7. THE EFFECT OF PLANT GROWTH REGULATORS ON THE SUSCEPTIBILITY OF PLANTS TO ATTACK BY PESTS AND DISEASES

B.D. Smith

8. FOLIAR PENETRATION OF PLANT GROWTH SUBSTANCES WITH SPECIAL REFERENCE TO TREE FRUITS

M.J. Bukovac

9. THE ABSORPTION OF CHLORMEQUAT AND SADH INTO LEAVES OF FRUIT PLANTS

C.P. Lloyd-Jones

10. TRANSLOCATION OF IAA IN THE STRAWBERRY PLANT IN RELATION TO THE ACCUMULATION OF NUTRIENTS IN THE FRUIT

R. Antoszewski

11. SESSION II – GROWTH REGULATORS IN THE FRUIT TREE NURSERY- THE ROLE OF GROWTH REGULATORS IN ROOTING

M.N. Westwood

12. FACTORS AFFECTING THE ROOTING RESPONSE OF PLANTS TO GROWTH REGULATOR APPLICATION

B.H. Howard

13. GROWTH CORRELATIONS AND THE SHAPE OF YOUNG TREES AND SHRUBS

L.S. Jankiewicz | H. Plich | B. Borkowska | A. Moraszczyk

14. FEATHER INDUCTION BY GROWTH REGULATORS ON MAIDEN TREES OF APPLE AND PEAR

E. Baldini | S. Sansavini | A. Zocca

15. CHEMICAL INDUCTION OF BRANCHING IN NURSERY TREES

J.D. Quinlan | A.P. Preston

16. PROMOTION OF LEAF ABSCISSION IN FRUIT NURSERY STOCK

F.E. Larsen

17. THE USE OF CEPA, SADH AND MINERAL SALTS TO DEFOLIATE APPLE TREES IN NURSERIES

A. Basak | L.S. Jankiewicz | A. Czynczyk

18. SESSION III – JUVENILITY – JUVENILITY AND FLOWERING OF FRUIT TREES

R.H. Zimmerman

19. EFFECT OF SADH ON JUVENILITY OF APPLE SEEDLINGS

H. Jonkers

20. EFFECT OF GIBBERELLIC ACID ON PHOTOPERIOD CONTROLLED GROWTH IN SEEDLINGS OF BLACK CURRANT (RIBES NIGRUM L.)

A. Karnatz

21. SESSION IV – CONTROL OF VEGETATIVE GROWTH AND FLOWERING – RECENT ADVANCES IN THE UNDERSTANDING OF FLOWER FORMATION IN FRUIT TREES AND ITS HORMONAL CONTROL

S.P. Monselise

22. CHEMICAL CONTROL OF VEGETATIVE GROWTH AND FLOWERING OF APPLE TREES

M.W. Williams

23. THE INFLUENCE OF GROWTH REGULATORS ON SHOOT AND ROOT DEVELOPMENT OF FRUIT TREES

R. Schumacher

24. THE INTERACTION OF GROWTH REGULATORS AND TREE ORIENTATION ON FRUIT-BUD FORMATION

J. Tromp

25. THE EFFECT OF SADH, CHLORMEQUAT AND SOME FATTY ACIDS AND THEIR DERIVATIVES ON APPLE TREES

L. Chvojka

26. FLORAL INITIATION IN PEAR TREES

J. Huet

27. THE LONG-TERM EFFECTS OF CHLORMEQUAT ON ‘DOYENNÉ DU COMICE’ PEAR

F. Jaumién

28. EFFECT OF GROWTH REGULATORS ON PLUM AND CHERRY TREES

I. Modlibowska

29. THE USE OF GIBBERELLIC ACID TO CONTROL FLOWERING OF SWEET ORANGE

G.I. Moss | J. Bellamy

30. SESSION V – NEW SYSTEMS OF FRUIT PRODUCTION THE MEADOW ORCHARD – A NEW CONCEPT OF APPLE PRODUCTION BASED ON GROWTH REGULATORS

L.C. Luckwill | R.D. Child

31. THE INFLUENCE OF GROWTH REGULATORS ON FRUIT PRODUCTION IN YOUNG TREES OF BRAMLEY’S SEEDLING

J. Cartwright

32. SESSION VI – DORMANCY AND FROST RESISTANCE – DORMANCY AND BUD BREAK IN WARM CLIMATES; CONSIDERATIONS OF GROWTH REGULATOR INVOLVEMENT

S. Lavee

33. THE REST MECHANISM IN DECIDUOUS FRUIT TREES AS INFLUENCED BY PLANT GROWTH SUBSTANCES

D.R. Walker | S.D. Seeley

34. EFFECT OF SADH ON THE TIME OF FLOWERING OF APPLE

F. Fankhauser | R. Schumacher

35. THE EFFECT OF ABSCISIC ACID AND GIBBERELLIC ACID ON THE COLD HARDINESS OF APPLE SEEDLINGS AND EXPLANTS

J. Pieniazek | T. Holubowicz

36. SESSION VII – FRUIT SET AND DEVELOPMENT PHYSIOLOGICAL CONTROL OF FRUIT SET AND DEVELOPMENT WITH GROWTH REGULATORS

F.G. Dennis

37. THE REGULATION OF SET AND DEVELOPMENT OF THE GRAPE BERRY

B.G. Coombe

38. ALTERING SET AND SIZE OF GRAPES WITH GROWTH REGULATORS

R.J. Weaver

39. PLANT REGULATOR INDUCED MALE STERILITY IN SEEDED GRAPES

B.S. Dhillon

40. EFFECT OF GROWTH REGULATORS ON SET AND DEVELOPMENT OF CITRUS FRUIT

A.H. Krezdorn

41. GIBBERELLIC ACID FOR CONTROLLING FRUIT PRODUCTION OF PEARS

J.N. Turner

42. SECONDARY ABSCISSION AND PARTHENOCARPIC FRUIT GROWTH IN APPLE AND PEAR FLOWERS IN VITRO

R.L.M. Pierik

43. THE INDUCTION OF PARTHENOCARPY IN ‘COX’S ORANGE PIPPIN’

W.W. Schwabe

44. THE INFLUENCE OF GROWTH REGULATORS ON FRUIT DEVELOPMENT OF SWEET CHERRY

R. Schumacher

45. SESSION VIII – CONTROL OF FRUIT ABSCISSION CHEMICAL CONTROL OF FLOWER AND FRUIT ABSCISSION IN APPLE AND PEAR

S.J. Wertheim

46. CONTROL OF ABSCISSION OF APPLES WITH EMPHASIS ON THINNING AND PRE-HARVEST DROP

L.J. Edgerton

47. PEACH FRUIT-SET AND ABSCISSION

G.C. Martin

48. MORPHACTINS AS POSSIBLE FRUIT THINNING AGENTS FOR PEACHES

J. Hugard | H. Clanet | A. Carbonneau

49. THE ROLE OF CULLULASE IN THE ABSCISSION OF CITRUS LEAVES AND FRUITS IN RELATION TO EXOGENOUS TREATMENTS WITH GROWTH REGULATORS

R. Goren | G. Teitelbaum | A. Ratner

50. SESSION IX – CHEMICAL AIDS TO MECHANICAL HARVESTING VALUE OF GROWTH REGULATORS AS AIDS TO MECHANICAL HARVESTING OF APPLES, CHERRIES AND GRAPES

E.L. Proebsting Jr

51. GROWTH REGULATORS AS AIDS TO THE MECHANICAL HARVESTING OF CHERRIES

F. Fankhauser | R. Schumacher

52. THE USE OF CHEMICALS TO FACILITATE MECHANICAL HARVESTING OF CITRUS

W.C. Wilson

53. CHEMICALS TO PROMOTE FRUIT ABSCISSION OF OLIVES

H.T. Hartmann

54. CHEMICAL AIDS TO THE MECHANIZED HARVESTING OF OLIVES

N. Jacoboni | A. Tombesi

55. THE EVALUATION OF CEPA IN RELATION TO HARVESTING OF SMALL FRUITS

A.A. van Oosten

56. SESSION X – FRUIT RIPENING AND QUALITY CONTROL OF FRUIT MATURATION AND RIPENING WITH GROWTH REGULATORS

N.E. Looney

57. EFFECT OF GROWTH REGULATORS ON FIRMNESS AND RED COLOR OF FRUIT

M. Faust

58. EFFECTS OF GROWTH REGULATORS ON THE STORAGE LIFE OF APPLES AND PEARS

R.O. Sharples

59. EFFECT OF CHLORMEQUAT AND CEPA ON THE RIPENING OF POME FRUITS

H. Clijsters

60. EFFECT OF GROWTH REGULATORS ON THE SIZE AND SHAPE OF FRUITS

G.E. Stembridge

61. THE INTERACTION OF SADH, CEPA AND 2,4,5-TP IN IMPROVING THE QUALITY OF EARLY-HARVESTED APPLES

R.D. Child

62. EFFECT OF FRUIT THINNING ON SOME COMPONENTS OF FRUIT QUALITY IN APPLES

H. Link

63. THE EFFECT OF GROWTH REGULATORS ON MATURATION, QUALITY AND PRE-HARVEST DROP OF STONE FRUITS

D. Ga'ash | S. Lavee

64. FRUIT QUALITY IN CITRUS AND THE EFFECT OF GROWTH REGULATORS

S.P. Monselise

65. USE OF GROWTH REGULATORS TO DELAY MATURITY AND PROLONG SHELF LIFE OF CITRUS

Ch.W. Coggins Jr

66. THE EFFECT OF GROWTH REGULATORS ON DEGREENING AND REGREENING OF CITRUS FRUIT

G.K. Rasmussen

67. SESSION XI – PRODUCTION AND EVALUATION OF NEW GROWTH REGULATORS – THE PRODUCTION OF NEW GROWTH REGULATORS

A.W. Mitlehner

68. THE USES AND POTENTIAL OF CEPA IN FRUIT CROPS

J.R. Sterry