Accelerated Aging Test to Assess Vigor of Juglans Nigra Seeds
Accelerated Aging Test to Assess Vigor of Juglans Nigra Seeds
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DOI：
10.1080/15538362.2019.1628685
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发表时间：
2020-04-02
影响因子：
2.4
通讯作者：
Catraro, Marcela
中科院分区：
文献类型：
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作者：
Flores, Patricia;Poggi, Damian;Catraro, Marcela
本工作的目的是建立一种标准化黑穗槐种子加速老化试验（AA）的方法。经过不同老化处理后的种子进行标准发芽试验，其结果用正常幼苗的百分比表示。测定了发芽速度指数和平均最大发芽时间。结果表明，在高温和相对湿度的条件下，黑核桃种子在7天内就失去了萌发能力。在有利的贮藏条件和加速老化处理下，较大的种子具有较高的正常幼苗率和活力。本研究清楚地表明，黑穗槐种子活力的评估应采用不超过72 h的AA期，AA测试中最常见的异常是幼苗有短根和无次生根。
The objective of this work was to develop a methodology for standardizing the Accelerated Aging test (AA) for J. nigra seeds. After different aging treatments, seeds were subjected to the standard germination test the results of which were expressed as the percentage of normal seedlings. Germination velocity index and mean time of maximum germination were also determined. Our results showed that storage at high temperature and relative humidity deteriorates black walnut seeds to the extent that their germination capacity is lost in only seven days. Bigger seeds had a higher percentage of normal seedlings and vigor, both under favorable storage conditions and when subjected to accelerated aging treatments. This work has clearly shown that vigor of J. nigra seeds should be assessed using AA periods no longer than 72 h. The most frequent abnormality observed in AA testing was seedlings with stubby roots and no secondary roots.