森林与环境学报2018，Vol.38Issue(2)：202-208,7.DOI:10.13324/j.cnki.jfcf.2018.02.012
干旱胁迫对杉木无性系叶绿素荧光特性的影响
Effects of drought stress on chlorophyll fluorescence characteristics of Chinese fir clones
摘要
Abstract
Using PEG-6000 simulating light, moderate and severe drought stress, the chlorophyll fluorescence parameters of the seedling of No.5 and No.49 one-year-old Chinese fir clone were analyzed. The results were as follows: for both No.5 and No.49 clones,the Fovalue was higher than the control under all the stress treatments,Foincreased at first and then decresed under light and moderate treatments,while Fodecreased firstly and then went up under severe stress;the Fm,Fv,Fv/Fmand Fv/Fogenerally decreased with stress increase. For No.5 clone,the Fmvalue significantly decreased by 38.7% and 48.7%,respectively,compared to the control under 48 and 72 h light stress treatments (P<0.05); the Fvvalue significantly decreased compared to control under 48h light stress treatment(P<0.05). For No.49 clone,the Fmand Fvvalue decreased compared to control,but there was not signifi cantly difference. Under all the stress treatments,the Fv/Fmvalue was higher in No.5 clone than in No.49 clone. The Fv/Fovalue was significantly lower in No.5 clone than control under 72 h stress treatment(P<0.05),and the Fv/Fovalue was only significantly lower in No.49 clone than control under 48h severe stress treatment(P<0.05).In conclusion,under drought stress,the No.49 clone has stronger photosynthesis regulation ability than No.5, which can provide scientific guideline for screening superior drought tolerance clone of Chinese fir provenance.关键词
杉木/无性系/干旱胁迫/叶绿素荧光Key words
Chinese fir/clones/drought stress/chlorophyll fluorescence分类
农业科技引用本文复制引用
孙敏,李树斌,唐飘,郑莹莹,林思祖,丁国昌..干旱胁迫对杉木无性系叶绿素荧光特性的影响[J].森林与环境学报,2018,38(2):202-208,7.基金项目
高校产学合作科技重大专项(2012N5003) （2012N5003）
中央财政支持地方专项(6213C011115) （6213C011115）
福建农林大学科技创新专项基金项目(KFA17285A). （KFA17285A）
