Volume 48 Number 1 Article 26 Pages: 51-52
Year 1994 Month 1
Title: A Maturity and Storage Study of Scab-Resistant Cultivars
Authors: J.R. DeEll and R.K. Prange
Citation
Abstract:
Based on the starch-iodine test and internal ethylene concentrations measured during three harvest seasons (1991-1992), the maturity of scab-resistant cultivars grown in the Annapolis Valley, Nova Scotia, can be ranked as follows (earliest to latest): 'Redfree,' 'Prima,' 'Novamac,' 'Macfree,' 'Moira,' 'Priscilla 'Nova Easygro,' 'Liberty,' 'Sir Prize,' 'Novaspy,' and 'Trent.' Several cultivars, 'Novaspy,' 'Moira,' 'Priscilla,' 'Novamac,' 'Nova Easygro,' 'Prima,' and 'Macfree,' were studied for two years (1990 & 1991), and three cultivars were studied for one year, 'Sir Prize,'(1991), 'Liberty' (1991), and 'Trent4 (1990). In 1990 each cultivar was stored for 3 and 6 months at 3°C in air and standard controlled atmosphere (SCA: 4.5% CO2 & 2.5% O2) and in 1991 they were stored for 4 and 8 months at 0°C in air, SCA and low-oxygen controlled atmosphere (LO: 1.5% CO2 & 1.5% O2). 'Miora,' 'Prima' and 'Priscilla' had very limited storage life (> 2 months), due mainly to the development of storage disorders and rots. 'Novamac', 'Nova Easygro' and 'Macfree' were essentially at the end of their storage life after 4 months, as firmness in 'Novamac' decreased substanially and 'Nova Easygro' and 'Macfree' began to develop, core browning and scald. 'Novaspy' stored very well and was the only cultivar to maintain its quality after long-term storage (8 months). Among the cultivars that have been evaluated for one year, only 'Sir Prize' had no problem with storage disorders after long-term storage.
Both 'Trent' and 'Liberty' developed some core browning after long-term storage, and 'Liberty' developed vascular breakdown in SCA and LO storage.
In summary, 'Miora,' 'Prima' and 'Priscilla' do not store very well, 'Novamac,' 'Nova Easygro,' 'Macfree,' 'Trent' and 'Liberty' may be acceptable for mid-term storage, and 'Novaspy' and 'Sir Prize' are recommended for long-term storage.
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