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不同春化天数对不同品系大白菜抽薹开花的影响

发表时间:2015-11-15  浏览量:2018  下载量:734
全部作者: 齐仙惠,李改珍,孙梦霞,侯雷平,高美英,李梅兰
作者单位: 山西农业大学园艺学院;山西省农业科学院蔬菜研究所
摘 要: 为进行大白菜的开花机理研究,试验以‘3#’,‘7#’,‘8#’和‘9#’4个大白菜品系为材料,对幼苗分别进行10 ,20,30 d的4℃低温处理,观察处理后各大白菜的花芽分化、现蕾和开花情况,以研究不同春化天数对不同品系大白菜抽薹开花的影响。结果表明,随低温处理时间的增加,各品系开始花芽分化、现蕾和开花的时间均有所减少,花芽分化和现蕾始期的叶片数也随之减少。在低温处理30 d条件下,‘3#’和‘7#’能够全部开花;‘8#’抽薹的植株占28.6%,但并未开花;而‘9#’则只能完成花芽分化但未能抽薹。这说明4个品系间的冬性差异显著,‘9#’冬性最强,‘8#’次之,‘3#’和‘7#’较弱。在开花机理研究中可选用‘3#’和‘7#’,低温处理时间以20 d为最佳,同时可选用‘9#’进行比较研究,但至少要低温处理30 d才能使其通过春化。
关 键 词: 蔬菜学;大白菜;春化;品系;开花
Title: Effects of different vernalization days on flowering of different lines in Chinese cabbage
Author: QI Xianhui, LI Gaizhen, SUN Mengxia, HOU Leiping, GAO Meiying, LI Meilan
Organization: College of Horticulture, Shanxi Agricultural University; Vegetables Research Institute, Shanxi Academy of Agriculture Sciences
Abstract: To understand the mechanisms underlying the floral development in Chinese cabbage, four inbred lines ‘3#’, ‘7#’, ‘8#’ and ‘9#’ were used in this study. The seedlings of these lines were treated at 4℃ for 10, 20 and 30 d respectively. The state of flower bud differentiation and appearing, blossom in different lines were observed to study the effects of different vernalization days on blossoming in Chinese cabbage. The results showed that the initiation period of flower bud differentiation and appearing, blossom were opposite with the extension of treatment time, and the number of leaves during the stage of flower bud differentiation and appearing were reduced. After cold treatment for 30 d, ‘3#’ and ‘7#’ were full blossom, 28.6% of the ‘8#’ plants bolted but did not blossom, ‘9#’ only completed the flower bud differentiation but failed to bolt. The results suggested that the winterness difference of these lines was significant, the winterness of ‘9#’ was the strongest, ‘8#’ was somewhat weaker, and ‘3#’ and ‘7#’ were the weakest. In the research of mechanisms underlying the floral development, ‘3#’and‘7#’ can be used, and the treatment time under low temperature for promoting flowering is 20 d, while ‘9#’ can be used for a comparative research, however the treatment time is 30 d at least.
Key words: olericulture; Chinese cabbage; vernalization; lines; flowering
发表期数: 2015年11月第21期
引用格式: 齐仙惠,李改珍,孙梦霞,等. 不同春化天数对不同品系大白菜抽薹开花的影响[J]. 中国科技论文在线精品论文,2015,8(21):2229-2236.
 
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