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2022 Vol.40, Issue 2

Research Article

Effect of Pollination Technique on Agronomic and Physicochemical Characteristics of Date Palm Fruits (Phoenix dactylifera L.) cv. ‘Deglet Nour’
Kadri Karim12*†
,
Aounallah Karim3†
,
Hammadi Hamza4
,
Abdelhafidh Manar3
,
Chahine Karmous3
,
Taoufik Bettaieb3
1Laboratory of Biotechnology and genetic resources, Regional Research Center on Oasis Agriculture, BO 62, Deguech 2260, Tunisia
2Laboratory of Biotechnology applied to Agriculture, National Institute of Agronomic Research of Tunis, 29 Street Hedi Karray, University of Carthage, Tunis 1082, Tunisia
3Laboratory of Horticultural Science, Head of Agronomy and Crop Biotechnology Department, National Institute of Agronomy, University of Carthage, Tunis 1082, Tunisia
3Arid and Oases Cropping Laboratory, Arid Area Institute, Medenine 4119, Tunisia
*Corresponding Author
†These authors contributed equally to this work.
30 April 2022. pp. 121-133
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Abstract

In Tunisian oases, pollination remains a traditional process and the male’ spikelets are manually inserted into female inflorescences. The drawback of this ancestral practice forced us to look for a new alternative pollination technique for improving date palm productivity. The present investigation aimed to compare agronomic and biochemical characteristics of ‘Deglet Nour’ variety following three pollination techniques: the handmade traditional technique, the dusting (spraying pollen grains by powder) and the water suspension technique. The results affirmed that the dusting technique was the most efficient technique followed by the handmade pollination. Sprinkling showed the highest fruit set rate (82.21%), retention rate (68.34%) and yield per bunch (5.5 kg) with the lowest number of partenocarpic fruits (less than 2%). Besides, data revealed that pollination techniques were not involved in physicochemical and pomological characteristics during the different stages of date maturation. However, other studies can be carried out to explore these different pollination techniques on other varieties growing in different oasis systems.

Keywords
date palm
dusting pollination
fruit characteristics
fruit set
pollen,
spray pollination,
traditional pollination
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :원예과학기술지
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 40
  • No :2
  • Pages :121-133
  • Received Date : 2021-10-26
  • Revised Date : 2022-01-07
  • Accepted Date : 2022-02-17
  • DOI :https://doi.org/10.7235/HORT.20220012
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