Microsatellites as a tool for identifying successful pollinators of the pear cultivar ‘Ingeborg’ in Ullensvang, Norway

Meland, Mekjell; Kurtović, Mirsad; Kalamujić, Belma; Pojskić, Naris; Lasić, Lejla; Gaši, Fuad

doi:10.17660/actahortic.2018.1229.9

Cited by 2 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Significant acreage is planted in Norway too [7]. Insufficient cultivar adaptation to changes in environmental conditions, as well as the lack of suitable pollinizers affects the success of the cultivation of these pear cultivars in specific climatic conditions in Norway [8]. The cultivar "Celina" has been included in the assortment of some European countries and has shown better adaptability to local climatic conditions and gives large yields in combination with appropriate pollinizers [5].…”

Section: Introductionmentioning

confidence: 99%

Success Rate of Individual Pollinizers for the Pear Cultivars “Ingeborg” and “Celina” in a Nordic Climate

2020

View full text Add to dashboard Cite

Norwegian pear production is low due to climatic limitations, a lack of well-adapted cultivars and suitable pollinizers. However, nowadays it is increasing as a result of newly introduced and bred pear cultivars. Since cross pollination is necessary for high yields and good fruit quality, the aim of this investigation was to find the most suitable pollinizers for the pear cultivars “Ingeborg” (“Conference” × “Bonne Louise”) and “Celina” (“Colorée de Juillet” × “Williams”). Self-pollination of “Ingeborg” and “Celina”, together with “Conference”, “Belle Lucrative”, “Anna”, “Clara Frijs”, “Herzogin Elsa”, “Kristina” and “Fritjof” as potential pollinizers, were studied in this experiment during the 2017 and 2018 seasons in Norway. The success rate of each pollinizer was tested under field conditions, while the monitoring of pollen tube growth was done using the fluorescence microscopy method. All reproductive parameters (pollen germination, number of pollen tubes in the upper part of the style, pollen tube number in the locule of the ovary, number of fertilized ovules, initial fruit set, and final fruit set) in all crossing combinations were higher in 2018 due to much warmer weather. Based on the flowering overlap and success rate of each individual pollinizer and fruit set, the cultivars “Anna” and “Clara Frijs” can be suggested as pollinizers for the cultivar “Ingeborg”, while “Fritjof”, “Anna”, “Kristina” and “Herzogin Elsa” for the cultivar “Celina”. An even distribution of two compatible pollinizers having overlapping flowering times with the main commercial pear cultivar is a general recommendation for commercial pear production.

show abstract

Section: Introductionmentioning

confidence: 99%

Success Rate of Individual Pollinizers for the Pear Cultivars “Ingeborg” and “Celina” in a Nordic Climate

2020

View full text Add to dashboard Cite

show abstract

“…For determination of the most efficient pollinizers for the pear cultivars 'Ingeborg' and 'Celina', the following methods have been applied so far: fluorescent analysis of progamic phase of fertilization [5,35], examination using microsatellite markers [6,36,37], and study of flowering performance and phenology [38]. So, as a follow up from the previous manuscript where pollen tube growth in different crossing combinations of 'Ingeborg' and 'Celina' was described [5], the aim of this work was to investigate the functionality of the embryo sacs, from developing, through viability, and up to the fertilization success and fruit set of the diploid ('Celina') and the triploid ('Ingeborg') pear cultivars, that can affect irregular yields of these cultivars.…”

Section: Introductionmentioning

confidence: 99%

Functionality of Embryo Sacs in Pear Cultivars ‘Ingeborg’ and ‘Celina’ as Related to Fruit Set under Nordic Climate

Cerović

Akšić

Đorđević³

et al. 2020

Plants

View full text Add to dashboard Cite

Since the European pear (Pyrus communis L.) is a self-incompatible fruit species, synchrony and compatibility between female parts of the mother plant and male gametes from the pollen donor must be fulfilled. Besides pollination and fertilization, normal embryo and zygote development is one of the prerequisites for the satisfactory yields in pears. The main goal of this experiment was to investigate the functionality of embryo sacs and the embryo’s early stages of growth in relation to the fruit set of diploid (‘Celina’) and the triploid (‘Ingeborg’) pear cultivars under specific Norwegian climatic conditions. For this purpose, flowers were collected at the beginning of flowering, and on the third, sixth, ninth, and twelfth days after the beginning of this phenophase for two consecutive years. Ovaries were dehydrated, embedded in paraffin wax, sectioned, stained, and observed under the light microscope. In the analyzed cultivars, results showed different tendencies in embryo sac development and degradation processes, in both experimental years, which is probably due to the genetic background of the examined cultivars. Also, fertilization success and fruit set were higher in the second year of study due to the higher average temperature during the flowering period. Diploid cultivar ‘Celina’ showed much better adaptation to high temperatures in relation to triploid cultivar ‘Ingeborg’.

show abstract

Microsatellites as a tool for identifying successful pollinators of the pear cultivar ‘Ingeborg’ in Ullensvang, Norway

Cited by 2 publications

References 11 publications

Success Rate of Individual Pollinizers for the Pear Cultivars “Ingeborg” and “Celina” in a Nordic Climate

Success Rate of Individual Pollinizers for the Pear Cultivars “Ingeborg” and “Celina” in a Nordic Climate

Functionality of Embryo Sacs in Pear Cultivars ‘Ingeborg’ and ‘Celina’ as Related to Fruit Set under Nordic Climate

Contact Info

Product

Resources

About