Biochemical, Mineral, and Enzymatic Properties of Date Fruits (Barhee and Piyarom Cultivars) as Influenced by Different Pollen Sources

Document Type : Original Research

Authors
H. Zargari 1
A. Talaie 2
Y. Dehghani Shurki 3
V. Abdossi 1
1 Department of Agronomy and Horticultural Science, College of Agriculture and Food Industry, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran.
2 Department of Horticultural Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Islamic Republic of Iran.
3 Seed and Plant Certification and Registration Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Islamic Republic of Iran.
10.22034/JAST.26.5.1013
Abstract
The present study investigated the effects of five Iranian male palm pollen grains as pollen sources on the fruit quality of two cultivars, ‘Barhee’ and ‘Piyarom’ (offshoot-derived and tissue culture-derived). The biochemical and enzymatic properties of fruit dates at the Tamar stage (full maturity) enabled the evaluation of pollen source effects on fruit quality. The research location was Jahrom Research Station, Fars Province, Iran, from 2018 to 2019. The pollen sources were genotypes ‘7001’ (control), ‘7005’, ‘7013’, ‘7030’, and ‘B11’. Pollinated with 7013 pollen, Offshoot-erived (OFS) trees of the ‘Barhee’ cultivar had the highest fruit flesh pH (7.07). In contrast, the lowest pH value (5.84) occurred in fruits of Tissue Culture-Derived (TCD) trees of the ‘Piyarom’ pollinated with the 7030. In the OFS ‘Piyarom’ the pollen source 7001 caused the highest fruit TSS (68.83%). When pollinated with the B11, ‘Barhee’ had the lowest fruit TSS (44.90%). In TCD ‘Piyarom’ trees, the 7030 pollen caused the highest TSS (62.53%). By receiving pollen from B11, the ‘Barhee’ produced fruits with the lowest TSS (44.23%). Regardless of being OFS or TCD and of the pollen source, on average, ‘Barhee’ produced fruits with more moisture content than fruits of the ‘Piyarom’. In OFS ‘Piyarom’ trees, pollen from the 7030 caused the highest Fruit Dry Matter (FDM) (87.40%), whereas the ‘Barhee’ pollinated with the 7001 produced fruits with the lowest FDM (67.15%). In TCD ‘Piyarom’ palms, pollen from the 7030 caused the highest FDM (85.19%), compared to the ‘Barhee’ pollinated with the 7013, which showed the lowest FDM (67.87%). Pollen from the 7030 caused the highest total sugar content in the fruits of OFS and TCD ‘Piyarom’ trees. The fruits of OFS ‘Piyarom’ trees had more Fe and Polyphenol Oxidase (PPO) activity than TCD ‘Piyarom’ trees.

Keywords

Subjects

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Journal of Agricultural Science and Technology
Volume 26, Issue 5
September and October 2024
Pages 1013-1025