Indole auxins in spinach plants grown in long and short days

Autor:	Mirjana Nešković, Ljubinka Ćulafić
Rok vydání:	1974
Předmět:	chemistry.chemical_classification Indole test fungi Tryptophan Stamen food and beverages Endogeny Plant Science Horticulture Biology biology.organism_classification chemistry Auxin Shoot Botany Spinach heterocyclic compounds Elongation
Zdroj:	Biologia Plantarum. 16:359-365
ISSN:	1573-8264 0006-3134
Popis:	The endogenous auxin-like substances were analyzed in the shoot extracts of young spinach seedlings, exposed to photoperiodic induction. At least eight indole auxins were found. One of them was identified as tryptophan, the other one is most probably IAA. The plants grown in long days had a higher level of ether soluble auxins than the controls in short days. Separate extractions of plants after each of the eight inductive days showed that the auxin content was not constant, but subjected to irregular oscillations. However, parallel oscillations were also found in control plants grown in short days. Staminate plants were found to contain more endogenous auxins than the pistillate ones. It is concluded that the quantitative changes in auxins during the photoperiodic induction are probably not related to flowering, but to some other growth process, common to all plants in that phase of growth. The higher level of auxins in staminate plants may be the cause of their faster elongation before the onset of flowering.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::854a56fc70e886424a23a26b02094811 https://doi.org/10.1007/bf02920998 Zobrazit plný text záznamu Full text from SpringerLink