TITLE:
The Cause for Water-Heart Fruit of Pineapple and Protective Measurements
AUTHORS:
Haiyan Shu, Wei Sun, Keming Li, Guiying Xu, Rulin Zhan, Shenghe Chang
KEYWORDS:
Water-Heart Fruit, Pineapple, Water Logging, Potassium, Hydrogen Ions
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.10 No.6,
June
3,
2019
ABSTRACT: Pineapple industry has played important roles in China’s
economics in tropical- and subtropical-areas. Pineapple industry in China has been
damaged by water-heart fruit. The objective of this research is to clarify the mechanism
underlying water-heart fruit of pineapple and find ways for preventing
water-heart fruit. We found that water logging
can cause water-heart pineapple. The longer the pineapple plants were water logged, the more fruits were found water
heart. With the development of fruits, the fruits’ sensitivity to water logging increased. Spraying potassium
sulfate onto the fruits after the plants are water
logged can decrease the rate of pineapple water-heart. But this effect
became less with the fruit development.
When sucrose and its precursors in intracellular space were transferred into
sink cells, hydrogen ions were required. Because of lacking hydrogen ions,
sucrose and its precursors were stopped in intracellular space and seized water
from cells. Water-heart fruit formed. If potassium can be gotten in
intracellular space, the roles of hydrogen ions might be replaced with
potassium ions. With the help of potassium ions, sucrose and its precursors
were transported into sink cells and the water-heart symptoms alleviated.