IGSNRR OpenIR
Allocation of added selenium in lettuce and its impact on roots
Simojoki, A; Xue, TL; Lukkari, K; Pennanen, A; Hartikainen, H
2003
Source PublicationAGRICULTURAL AND FOOD SCIENCE IN FINLAND
Volume12Issue:3-4Pages:155-164
AbstractAllocation of selenium (Se) in lettuce and its impact on root morphology were studied to better understand the growth responses of plants to added Se. Lettuce was grown in vermiculite under controlled growing conditions for seven weeks, and the allocation in the shoots and roots of selenate added in increasing dosages (0, 1, 10, 100, 500 and 1000 mug Se per 3.5-litre pot) as well as morphological variables of the roots were determined. The intermediate additions of 100 and 500 mug Se per pot seemed to produce the highest biomasses, although this was nearly masked by large scatter in the data. The Se contents both in roots and shoots increased roughly proportionally to the amount of Se added. However, at small additions Se was preferentially allocated to roots, whereas at larger additions the contents in roots and shoots (mg kg(-1) dry matter) were roughly equal. Se treatments did not change the morphology of hypocotyls. On the contrary, the specific length and area of basal and lateral roots were smallest at intermediate Se additions, whereas the specific volume was largest at the largest Se addition. These effects of Se on root morphology were, however, not unambiguously related to plant growth. As the Se contents in roots increased, the roots grew thicker and the specific volume of lateral roots increased in agreement with a hypothesis of increased endogenous ethylene production.
SubtypeArticle
KeywordRoot Morphology Selenium Lettuce Vegetables
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedAgriculture ; Food Science & Technology
WOS KeywordTOXICITY ; STRESS ; GROWTH ; QUANTIFICATION ; ACCUMULATION ; IRRADIATION ; RESPONSES ; ETHYLENE ; PLANTS
Indexed BySCI
Language英语
WOS SubjectAgriculture, Multidisciplinary ; Food Science & Technology
WOS IDWOS:000221137100002
PublisherAGRICULTURAL RESEARCH CENTRE FINLAND
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68358
Collection中国科学院地理科学与资源研究所
Corresponding AuthorSimojoki, A
Affiliation1.Univ Helsinki, Dept Appl Chem & Microbiol, FIN-00014 Helsinki, Finland
2.Chinese Acad Sci, Inst Geog, Beijing 100101, Peoples R China
3.Finnish Inst Marine Res, FIN-00931 Helsinki, Finland
Recommended Citation
GB/T 7714
Simojoki, A,Xue, TL,Lukkari, K,et al. Allocation of added selenium in lettuce and its impact on roots[J]. AGRICULTURAL AND FOOD SCIENCE IN FINLAND,2003,12(3-4):155-164.
APA Simojoki, A,Xue, TL,Lukkari, K,Pennanen, A,&Hartikainen, H.(2003).Allocation of added selenium in lettuce and its impact on roots.AGRICULTURAL AND FOOD SCIENCE IN FINLAND,12(3-4),155-164.
MLA Simojoki, A,et al."Allocation of added selenium in lettuce and its impact on roots".AGRICULTURAL AND FOOD SCIENCE IN FINLAND 12.3-4(2003):155-164.
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