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菠萝黑心病(又称内部褐斑)是一种未确定病原的生理失调,一般认为由低温诱导所致。本文报道外源赤霉素(GA_3)对菠萝黑心病的影响。1987和1988年的试验结果表明,广州地区的夏收菠萝,通常不受低温影响,采后1月内,一般不出现黑心病;如果采后用GA_3处理,则会出现黑心病。冬收菠萝因受当时低温的诱导,不管采后是否用GA_3处理,都会出现黑心病;若经过GA_3处理,则加速黑心病的发展,因此认为,诱导菠萝黑心病的因子,除低温外,还有GA_3。
Pinellia black heart disease (also known as internal brown spots) is a physiological imbalance of the pathogen is not determined, generally considered to be induced by low temperature. This article reports the effect of GA3 on black pineapple disease. 1987 and 1988 test results show that the summer harvest pineapple in Guangzhou are generally not affected by the low temperature, within 1 month after harvest, generally does not appear black heart disease; if post-GA3 treatment, there will be black heart disease. Winter harvest pineapple due to the cold was induced at that time, whether post-harvest treatment with GA_3, there will be black heart disease; if after GA_3 treatment, then accelerate the development of black heart disease, so that induced pine black heart disease factor, in addition to low temperature, There GA_3.