Effects of various pretreatments on seed germination ofCalystegia soldanella (Convolvulaceae), a coastal sand dune plant

Autor:	Hye-Jeong Park, Hyeon-Cheol Cha, Byeong-Mee Min, Jung-Moon Ko
Rok vydání:	2004
Předmět:	Plant ecology Germination Botany food and beverages Dormancy Plant Science Biology Convolvulaceae biology.organism_classification Calystegia soldanella Scarification Soldanella Sand dune stabilization
Zdroj:	Journal of Plant Biology. 47:396-400
ISSN:	1867-0725 1226-9239
Popis:	We tested various pretreatments to enhance the germination of ‘Sea bells’ (Calystegia soldanella Roem. et Schult). One experiment, which improved the germination rate by 70%, involved first scarifying the seed coats, then immersing the seeds in 50 ppm GA3 for 24 h. A GA3-alone pretreatment did not increase germination. However, the most effective method, with a 100% success rate, included 3 h of acid pretreatment with 98% H2SO4. We also used scanning electron microscopy (SEM) to examine the seed-coat surfaces and cross-sections of dry seeds. SEM showed structural differences between seeds that were not treated and those exposed to 98% H2SO4. The latter treatment allowed the seed coats to crack and break, thereby disrupting their physical dormancy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de70b89b6aa3a0713eda20b0e086ff19 https://doi.org/10.1007/bf03030557 Zobrazit plný text záznamu Full text from SpringerLink