EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Spur characteristics, fruit growth, and carbon partitioning in two late-maturing Japanese pear (Pyrus pyrifolia Nakai) cultivars with contrasting fruit size


Spur characteristics, fruit growth, and carbon partitioning in two late-maturing Japanese pear (Pyrus pyrifolia Nakai) cultivars with contrasting fruit size



Journal of the American Society for Horticultural Science 130(2): 252-260



ISSN/ISBN: 0003-1062

The aim of this study was to investigate the roles of spur characteristics and carbon partitioning in regulating cultivar differences in fruit size of two late-maturing japanese pear cultivars, 'Atago' and 'Shinkou'. The study of spur characteristics showed that the two cultivars displayed different patterns in leaf development, flower characteristics, fruit growth, and shoot type. In contrast to 'Atago' with dramatically larger fruit, 'Shinkou' is a heavily spurred cultivar with a higher total leaf area and leaf number per spur early in fruit growth, less vegetative shoots, and smaller fruit but larger core. No significant differences were obtained in specific leaf weight, leaf thickness, chlorophyll content, and net photosynthesis of mature leaves, and seed number per fruit between the two cultivars. The results of trace experiment with 13C revealed that on a spur basis, there were no significant differences in the amount of 13C assimilate produced by spur leaves on each labeling date except at 190 days after anthesis, however, there were highly significant differences in the amount of 13C allocated to fruit between cultivars. Moreover, a higher amount of 13C assimilates was allocated to 'Atago' flesh (or fruit) than that in 'Shinkou'. Analysis of relative sink strength (RSS) indicates that the sink strength of fruit was dominant over those of other organs in the spur measured in both cultivars except at the early stage of fruit growth. 'Atago' exhibited a greater RSS of fruit and lower losses of 13C for respiration and export than 'Shinkou'. These results suggest that the movement of photosynthates into the fruit was determined by sink strength of the fruit rather than the source strength in the two cultivars.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 004326590

Download citation: RISBibTeXText

Related references

Spur characteristics, fruit growth, and carbon partitioning in two late-maturing Japanese pear (Pyrus pyrifolia Nakai) cultivars with contrasting fruit size. Journal of the American Society for Horticultural Science 130(2): 252-260, 2005

Partitioning of (13)C-photosynthate from spur leaves during fruit growth of three Japanese pear (Pyrus pyrifolia) cultivars differing in maturation date. Annals of Botany 95(4): 685-693, 2005

Studies on the inheritance of major characters in oriental pear cultivars (Pyrus pyrifolia Nakai and P. pyrifolia x P. ussuriensis). 2. The inheritance of characteristics concerned with fruit shape, fruit volume and fruit weight. Research Reports of the Rural Development Administration, Horticulture 34(1): 51-59, 1992

Studies on the inheritance of major characters in oriental pear cultivars pyrus pyrifolia nakai and pyrus pyrifolia x pyrus ussuriensis 1. the inheritance of physiological characteristics colors of leaf fruit skin blooming time maturity and diseases. Research Reports of the Rural Development Administration 33(3 HORTIC): 76-84, 1991

Studies on the inheritance of major characters in oriental pear cultivars (Pyrus pyrifolia Nakai and P. pyrifolia X P. ussuriensis). 3. The inheritance of fruit characteristics concerned with sensory characteristics of fruit firmness, soluble solids, pH, astringency, and oxidative browning. RDA Journal of Agricultural Science, Horticulture 35(2): 476-483, 1993

Effects of fruit load on growth, dry matter production and assimilate partitioning in Japanese pear trees (Pyrus pyrifolia Nakai) cv. Kousui grown under film. Journal of the Japanese Society for Horticultural Science 69(6): 724-731, 2000

Biologically Active Gibberellins and Abscisic Acid in Fruit of Two Late-maturing Japanese Pear Cultivars with Contrasting Fruit Size. Journal of the American Society for Horticultural Science 132(4): 452-458, 2007

Biologically active gibberellins and abscisic acid in fruit of two late-maturing Japanese pear cultivars with contrasting fruit size. Journal of the American Society for Horticultural Science 132(4): 452-458, 2007

Effects of defoliation and fruit thinning on occurrence of watercore fruit in Japanese pear (Pyrus pyrifolia Nakai) 'Hosui'. Journal of the Japanese Society for Horticultural Science 67(3): 381-385, 1998

Variation of fruit size and its influence on fruit quality in sand pear (Pyrus pyrifolia (Burm) Nakai). Punjab Horticultural Journal 28(1-2): 47-49, 1988

Effect of soil moisture status on stem and fruit diameters, fruit production and quality in Japanese pear (Pyrus pyrifolia Nakai cv. Kosui). Japanese Journal of Soil Science and Plant Nutrition 74(3): 301-308, 2003

Tree growth and fruit production of various organic Asian pear (Pyrus pyrifolia Nakai) cultivars grown under a rain- shelter system. Journal of Horticultural Science and Biotechnology 90(6): 655-663, 2015

Relationship between endogenous free polyamine content and ethylene evolution during fruit growth and ripening of Japanese pear (Pyrus pyrifolia Nakai). Journal of the Japanese Society for Horticultural Science 74(3): 221-227, 2005

Relationship between endogenous free polyamine content and ethylene evolution during fruit growth and ripening of Japanese pear (Pyrus pyrifolia Nakai). Journal of the Japanese Society for Horticultural Science 74(3): 221-227, 2005

Inheritance of ripening time of fruit of Japanese pear (Pyrus pyrifolia Nakai). Japanese Journal of Breeding 43(2): 289-298, 1993