摘要
[目的]为了研究菠萝叶片气孔与抗寒性的关系。[方法]对定植在广东海洋大学实验基地内遭受2009～2010年低温胁迫的台农17号、巴厘、澳大利亚卡因3个菠萝品种进行了寒害调查。利用人工气候室,以30℃处理为对照,3个菠萝品种在20、15、10、5℃低温胁迫处理3 d后,用电镜观察各处理叶片气孔特征。[结果]巴厘和台农17号寒害等级为1级,澳大利亚卡因寒害等级为2级;气孔密度大小顺序为巴厘<台农17号<澳大利亚卡。在30℃条件下气孔面积大小顺序为巴厘>台农17号>澳大利亚卡因,3个品种从30℃到20、15℃气孔面积依次下降;与15℃相比,台农17号和澳大利亚卡因在10、5℃时气孔面积增加;巴厘在10、5℃气孔面积仍然依次减少。[结论]气孔密度小和单个气孔面积大的菠萝品种抗寒性强,反之则弱。
[ Objective ] The research aimed to study the relationship between stomata and cold resistance of pineapple. [ Method ] The cold damage grade of three cultivars of pineapple（ ＇ Comte de Paris＇ , ＇ Australian cayenne＇ , ＇ Tainong No. 17＇ ） in the experiment field of Guang- dong ocean university, which suffered cold damage in 2009 -2010 was investigated, and their stomata was observed using scanning electron microscope after 3 days of 30,20,15,10 and 15 ℃ treatment. [ Result ] The cold damage grade of ＇ Comte de Paris＇ and ＇ Tainong No. 17＇ was in grade 1, and that of＇ Australian cayenne＇ was in grade 2. Stomatal density of＇ Comte de Paris＇ was less than that of ＇ Tainong No. 17＇ , and stomatal density of＇ Tainong No. 17＇ was less than that of＇ Australian cayenne＇. Stomatal area of＇ Comte de Paris＇ was larger than that of ＇ Tainong No. 17＇ , and stomatal area of ＇ Tainong No. 17＇ was larger than that of ＇ Australian cayenne＇ at 30 ℃. Stomatal area of 3 cultivars declined in turn at 30,20 and 15 ℃, Stomatal area of ＇ Tainong No. 17＇ and ＇ Australian cayenne＇ became larger at 10 and 5 ℃ compared with 15 ℃. Stomatal area of ＇ Comte de Paris＇ declined in turn at 10 and 5 ℃. [ Conclusion] Pineapple cultivars with less stomatal density and larger stomatal area possessed the traits with cold resistance.
出处
《安徽农业科学》
CAS
2013年第1期1-3,共3页
Journal of Anhui Agricultural Sciences
基金
广东省星火技术产业带(2009B02503007)
广东省农业科技园区(2011A020504005)
关键词
菠萝
气孔
抗寒性
Pineapple
Stomatal
Cold resistance
