Effet de la nature et de la stérilisation des supports sur la viabilité et l’activité symbiotique de Rhizobium sullae

Content Provider	Semantic Scholar
Author	Tounsi, Slim Dhane, Sana Fitouri Hammami, Z. Hamdi, Khouloud Chaabouni, A. Chelli Bettaieb, Taoufik Jeddi, Faycel. Ben
Copyright Year	2015
Abstract	This study focuses on evaluating the ability of two new supports to maintain the viability of a rhizobialstrain RSU9 as an alternative to peat (used as a control) in two production processes (sterile and non sterile).The first tested carrier is a compost productbased on two native species (Arundo donax L. and Medicagoarborea L.). The second is a mulch of Ficus nitida L.The physicochemicalcharacterization of supports show a similarity of the mineral composition of the twosubstrateswithpeat (Badenoch and Carex) used for the production of commercial rhizobiainoculants.The bacteriacounting test showedthat carrier sterilizationincrease the survival of rhizobia 100 times duringstorageat 4 ° C for 3 months to 1 year.Compost has providedbetterstoragewhatever the production technique (sterile or non-sterile). Under sterile conditions, compost has improved the survival of RSU9 compared to peatby 95% to 51% after 3 months and 1 year of storage. In non-sterile conditions, compost has alsoimproved the survival of RSU9 compared to peatby 26% and 20% respectivelyafter 3 months, and 1 year of storage. Afteroneyearstorage, compost-basedcarrier gave the best results in symbiotic association withsulla. Compared to peat, compost improved nodulation and dry biomass of sulla of 18% and 35% in sterile condition, and than 16% and 19% in non-sterile conditions.
File Format	PDF HTM / HTML
Volume Number	19
Alternate Webpage(s)	http://www.jnsciences.org/index.php?id=86&option=com_attachments&task=download
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article