Published in Scientific Papers. Series B, Horticulture, Vol. LXVI, Issue 1
Written by Stanislava ATANASOVA, Maria GEORGIEVA, Diyan GEORGIEV
The present study observed the content of biologically active compounds in raspberry leaves in different phenophases (full blossoming, fruit harvesting and after fruit harvesting) and two stages of agrotechnics (0.50 m, 0.30 m). The study was conducted during the period 2019-2020 in a collection plantation of the Research Institute of Mountain Stockbreeding and Agriculture in Troyan with two introduced raspberry cultivars 'Willamette’ and 'Meeker'. The field experiment is based at intra-row spacings between plants (0.50 m and 0.30 m) and inter-row spacings of 3.00 m. The content of biologically active compounds in the leaves was found during the phenophases: full blossoming, fruit harvesting and after fruit harvesting. The results show that the highest content of the studied indicators chlorophyll "a", chlorophyll "b" and β-carotene in the leaf samples is the cultivar Willamette, with a variant of 0.50 m, respectively (2.56 mg/g FW, 1.62 mg/g FW, 1.44 mg/g FW), from 2019 in the phenophase of full blossoming of plants. In the Meeker cultivar, the highest content of chlorophyll "a" and β-carotene was found from the variant of 0.50 m in 2019 in the phenophase of full blossoming (1.80 mg/g FW, 1.10 mg/g FW) and chlorophyll "b" from the same variant after fruit harvest for 2020-1.04 mg/g FW.
[Read full article] [Citation]
