บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Tree growth and productivity and postharvest fruit quality in various strains of 'Delicious' apple

Fallahi, E., Simons, B. R., Fellman, J. K., Longstroth, M. A., Colt, W. M. and Ketchie, D. O.

Journal of the American Society for Horticultural Science. Vol: 119 Issue: 3 Pages: 389-395.

1994

บทคัดย่อ

Tree growth and productivity and postharvest fruit quality in various strains of 'Delicious' apple.

Twenty-six strains of 'Delicious' apple (Malus domestica Borkh.) were evaluated over several years for growth, yield, and fruit quality at harvest and after 6 months of storage. 'August Red', 'Rose Red', and 'Sharp Red' had larger trunk cross-sectional area (TCSA) 3 and 18 years after planting compared to most other strains. 'August Red' and 'Starking' had larger TCSA and cumulative yield. 'Apex,' 'Improved Ryan Spur', 'Silverspur', 'Starkrimson', and 'Wellspur' were also among strains with high cumulative yields and yield efficiencies. 'Hardi-Brite Spur' and 'Red King Oregon Spur' had moderately high yields and small TCSAs, thus, high yield efficiencies. 'Atwood', 'Hardispur', 'Imperial', 'Improved Ryanred', 'Starkspur Supreme', and 'Topred' had low cumulative yields. 'Ace' and 'Improved Ryanred' had low yield efficiencies. 'Ace', 'Imperial', 'Red King Oregon Spur', 'Rose Red', 'Starking', and 'Wellspur' had heavier fruit, while fruit weight in 'August Red', 'Hardispur', and 'Starkrimson' was lighter than that in most other strains. 'Redspur' and 'Starkspur Supreme' had the largest length to diameter (L/D) ratios. 'Early Red One' had a similar red skin color rating as 'Rose Red'. The red skin color rating of 'Early Red One' was significantly higher than that of all other strains. 'Hi-Early', 'Improved Ryanred', 'Redspur', and 'Starking' had the poorest skin color ratings. 'Hardispur', 'Nured Royal', 'Silverspur', and 'Starkrimson' had high soluble solids concentrations (SSCs) at harvest and after storage. 'Early Red One', 'Imperial', 'Improved Ryan Spur', and 'Red King Oregon Spur' had lower SSCs at harvest and after storage. Fruit of 'Apex' and 'Redspur' had relatively high firmness at harvest, while 'Hardispur', 'Silverspur', 'Starkrimson', and 'Starkspur Supreme' had firm fruit at harvest and after storage. 'Hardi-Brite Spur' had the softest fruit after storage, and fruit from 'Rose Red' had a lower firmness than most other strains at harvest and after storage. Considering cumulative yield, yield efficiency, or some quality parameters, 'Apex', 'Classic Red', 'Improved Ryan Spur', 'Red King Oregon Spur', 'Silverspur', and 'Wellspur' had satisfactory overall performance. Strains are also suggested for planting depending on the market situation and the demand for a particular quality factor. 'Hardispur' and 'Sturdeespur' (Miller) are not recommended for planting under climatic conditions similar to those of this experiment.