
Analysis of ornamental fruit characteristics in crabapple cultivars
XU Tianwei, ZHANG Wangxiang, FENG Lan, LU Xiaoji, YU Pengfei
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2025, Vol. 49 ›› Issue (5) : 183-190.
Analysis of ornamental fruit characteristics in crabapple cultivars
【Objective】This study investigated the ornamental characteristics of fruit color in 30 ornamental crabapple cultivars, aiming to provide references for breeding and landscape applications. 【Method】Seasonal variations in fruit color were observed to classify cultivars into color groups and determine optimal viewing periods. The diversity and temporal complementarity of fruit color within the cultivar group were systematically analyzed.【Result】The results showed that:cluster analysis of fruit color parameters (Euclidean distance = 3) categorized the cultivars into five color series: green (10.0%), yellow (16.6%), orange (6.7%), red (60.0%), and purple (6.7%).Brightness values followed the hierarchy: green series (67.7) > yellow series (64.9) > orange series (46.5) > red series (32.6) > purple series (20.5). The optimal fruit viewing period was at the same tinie frame in autumn (September-November), with cultivar diversity index showing a normal distribution pattern: early-autumn (50.0%), mid-autumn (60.0%), and late-autumn (63.3%). The average optimal viewing duration was 1.5 months, with the shortest being 1 month and the longest neaching 3 months. Based on color vividness, surface gloss, and spot presence, the ornamental value of the 30 cultivars was classified into three tiers (A-C). Top-tier (A) cultivars included Malus ‘Han Yancui’, M. ‘Red Jewel’, M. ‘Hong Ou’, M. ‘Hong Zhenzhu’, M. ‘Hong Tu’, M. ‘Sheng Xia’, M. ‘Shiyue Guanghui’, and M. ‘Yu Ji’. 【Conclusion】The crabapple cultivars exhibit high fruit color diversity, extended group viewing seasons and individual viewing periods. These multi-colored, multi-seasonal cultivars provide significant support for autumn tourism and ornamental applications, demonstrating substantial value for promoting the crabapple tourism industry.
ornamental crabapple / fruit color / optimal viewing period / cultivar diversity
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