Photoperiodic Regulation of Bulbing and Maturation of Bet Alpha Onions (Allium Cepa L.) Under Decreasing Daylength Conditions
Photoperiodic Regulation of Bulbing and Maturation of Bet Alpha Onions (Allium Cepa L.) Under Decreasing Daylength Conditions
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日照缩短条件下 Bet Alpha 洋葱 (Allium Cepa L.) 球茎和成熟的光周期调节
DOI：
10.1080/00221589.1975.11514646
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发表时间：
1975
期刊：
影响因子：
--
通讯作者：
E. Goldschmidt
中科院分区：
文献类型：
--
作者：
N. Kedar;D. Levy;E. Goldschmidt
摘要研究了秋洋葱品种‘Bet Alpha’和其他4个洋葱品种的光周期响应。“Bet Alpha”是唯一一个能够在白天长度从13小时14分钟减少到10小时40分钟的情况下在田间生产成熟鳞茎的人。在极短日照条件下，贝特α和其他品种的鳞茎和营养更新生长的可逆性，以及鳞茎对较高光强和远红光照射的要求，基本没有差异。在日长增加的条件下，‘贝特α’是最早成熟的品种。非常低的临界日照长度似乎是“Bet Alpha”的基本特征，使它能够在其他洋葱品种不允许完成鳞茎和成熟的环境条件下生产成熟的鳞茎。
SummaryThe photoperiodic response of the autumn onion cultivar ‘Bet Alpha’ and 4 other onion cultivars was studied. ‘Bet Alpha’ was the only one able to produce mature bulbs in the field under a daylength decreasing from 13 hours and 14 minutes to 10 hours and 40 minutes.The reversibility of bulbing and renewed vegetative growth under very short daylengths, and the requirements for relatively high light intensity and far-red irradiation for bulbing, were not basically different in Bet Alpha and in other cultivars. Under increasing daylength conditions ‘Bet Alpha’ was the earliest cultivar to mature. Very low critical daylength seems to be the essential characteristic of ‘Bet Alpha’, enabling it to produce mature bulbs under environmental conditions which do not permit completion of bulbing and maturation in other onion cultivars.