Comparison of methods for estimating the onset of the respiration climacteric in unpicked apples
Comparison of methods for estimating the onset of the respiration climacteric in unpicked apples
复制标题
未采摘苹果呼吸更年期发生时间估计方法的比较
DOI：
10.1080/00221589.1983.11515151
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
D. S. Johnson
中科院分区：
文献类型：
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作者：
M. Knee;S. M. Smith;D. S. Johnson
苹果在贮藏中的变质率受收获时成熟度的影响。根据乙烯产生量的增加与呼吸作用的气候性增加相一致，用三种方法对不同苹果品种的成熟度进行了评价：第一种方法是在采摘后不久每隔一周测定果实样品中的内部乙烯浓度（IEC）;将内浓度超过0.1 μ l-1的日期定义为更年期的开始。另外两种方法是基于每周采集的大量样品的乙烯产量。一种是计算采摘与乙烯产生量上升之间的平均延迟时间（DEP），另一种是记录至少一半重复样品显示立即乙烯产生量（IEP）的第一个日期。IEC和IEP确定的日期对每个品种基本一致，但在地点和海洋方面几乎没有证据表明相关性。
SummaryThe rate of deterioration of apples in storage is influenced by their maturity at harvest. Three methods based on the occurrence of the rise in ethylene production which is coincident with the climateric rise in respiration, have been used to assess the maturity of the crop for various apple cultivars.In the first method internal ethylene concentrations (IEC) were measured in fruit samples soon after picking at weekly intervals. The onset of the climacteric was defined as the date when the internal concentration passed 0.1 μ l-1. The other two methods were based on ethylene production by bulk samples picked at weekly intervals. In one, the mean delay between picking and the rise in ethylene production (DEP) was calculated, and the other recorded the first date on which at least half the replicate samples showed immediate ethylene production (IEP).The dates determined by IEC and IEP were generally in agreement for each cultivar but there was little evidence of correlation in respect to site and seas...