|
KMID : 0903620000410040387
|
|
Journal of the Korean Society for Horticultural Science
2000 Volume.41 No. 4 p.387 ~ p.391
|
|
|
Effect of Root Zone Temperature on the Mineral Contents of Leaves and Roots , and Fruit Qualities of ´ Fuji ´ Apple Trees (Malus domestica Borkh)
|
|
|
|
|
Abstract
|
|
|
|
This study was conducted to investigate the influence of the root zone temperature on the mineral contents of leaves and roots, and fruit qualities of ´Fuji´ apple trees. Apple trees were planted in 80 L container packed with sandy loam. Root zone temperatures applied were 20, 25, 30, and 35℃. A pot experiment of 4-year-old fruit-bearing ´Fuji´/M.26 apple trees was done from May 15 to August 15, 1997. Contents of nitrogen, phosphorous, and boron in leaves were lowest at 35℃, while those of calcium, magnesium, and manganese were highest. However, potassium content of leaves was fluctuated with root zone temperature and durations of treatment. Contents of phosphorous and potassium of roots were highest at 30℃, while that of nitrogen was lowest. However, nitrogen content of roots was highest at 35℃. Manganese content of roots was lowest at 30℃, but those of calcium, magnesium, and boron were not significantly different. The number of spur bud and the rate of flower bud differentiation decreased with increased root zone temperature. Fruit weight was highest at 25℃, but lowest at 35℃. Compared to other root zone temperatures, fruit hardness was high, but the accumulation of anthocyanin and the index of fruit color was low at 35℃.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|