Regulation of crop load and quality in sweet cherry cv. ‘Sweet Heart’ using blossom thinning

IF 2.2 4区 农林科学 Q2 HORTICULTURE Folia Horticulturae Pub Date : 2024-09-09 DOI:10.2478/fhort-2024-0020
Mir Uzma Parveze, Mohammad Maqbool Mir, Munib Ur Rehman, Umar Iqbal, Saba Q. Khan, F. A. Khan, Imran Khan, Sameera Qayoom, Irtiqa Mushtaq, Hamiyah K. Shah, Abdel-Rhman Z. Gaafar, Prashant Kaushik
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Abstract

Self-fertile cultivars of sweet cherry (Prunus avium) produce heavy crop load that is often associated with small and poor-quality fruits. Therefore, a crop load-management strategy is required to improve the quality of the fruit. In this study, the effect of blossom thinners on fruit set, yield and quality of the fruits was evaluated. Three types of blossom thinners were used at three different concentrations viz., ammonium thiosulphate (ATS) (1, 1.5 and 2%), naphthaleneacetic acid (NAA) (20, 40 and 60 ppm) and corn oil emulsion (1, 2 and 3%). These were sprayed at 80% of the bloom stage. The vegetative, flowering, fruit set and yield parameters were observed and recorded. Fruit quality was evaluated by measuring the physical and chemical characteristics of the fruits at the harvest stage. Negative correlation was found between fruit set and quality of fruit. The reduction in the crop load was associated with enhanced vegetative growth, including higher leaf:fruit ratio, higher supply and availability of photosynthates to the remaining fruitlets and reduced fruit firmness and titratable acidity. Fruit size, weight, volume, hue value, chroma value, soluble solid content (SSC), total sugars, SSC/acid ratio, anthocyanin and ascorbic acid content were enhanced as a result of thinning. The foliar spray of ATS at 2% and NAA at 60 ppm, at 80% bloom proved to be the most effective in reducing crop load and enhancing the fruit quality.
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利用疏花调节甜樱桃品种'Sweet Heart'的产量和质量利用疏花技术调节甜樱桃品种'Sweet Heart' 的产量和质量
甜樱桃(Prunus avium)的自交栽培品种会产生很重的作物负载,这往往与果实小、品质差有关。因此,需要一种作物负载管理策略来提高果实的质量。本研究评估了疏花剂对坐果率、果实产量和质量的影响。使用了三种不同浓度的疏花剂,即硫代硫酸铵(ATS)(1%、1.5% 和 2%)、萘乙酸(NAA)(20%、40% 和 60 ppm)和玉米油乳剂(1%、2% 和 3%)。这些药剂在 80% 的开花期喷洒。对植株、开花、坐果和产量参数进行了观察和记录。果实质量通过测量收获期果实的物理和化学特性进行评估。结果发现,坐果率与果实质量之间呈负相关。作物负载量的减少与无性生长的增强有关,包括叶果比、剩余果实的光合作用供应量和可用性的提高,以及果实硬度和可滴定酸度的降低。疏果后,果实的大小、重量、体积、色调值、色度值、可溶性固形物含量(SSC)、总糖、SSC/酸比、花青素和抗坏血酸含量均有所提高。事实证明,在 80% 盛花期叶面喷施 2% 的 ATS 和 60ppm 的 NAA 能最有效地减少作物负载并提高果实质量。
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来源期刊
Folia Horticulturae
Folia Horticulturae Agricultural and Biological Sciences-Horticulture
CiteScore
3.40
自引率
0.00%
发文量
13
审稿时长
16 weeks
期刊介绍: Folia Horticulturae is an international, scientific journal published in English. It covers a broad research spectrum of aspects related to horticultural science that are of interest to a wide scientific community and have an impact on progress in both basic and applied research carried out with the use of horticultural crops and their products. The journal’s aim is to disseminate recent findings and serve as a forum for presenting views as well as for discussing important problems and prospects of modern horticulture, particularly in relation to sustainable production of high yield and quality of horticultural products, including their impact on human health.
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