Effect of Sesbania rostrata
نویسندگان
چکیده
Microplot experiments on flooded soil infested with Hirschmanniella oryzae were conducted to investigate the influence of the legum Sesbania rostrata as a rotat ion crop with rice, Oryza sativa L. cv. Moroberekan. To avoid a green manure effect f rom S. r'ostrata, all aerial parts were removed at harvest. The dry weight of paddy, culms and leaves, and n u m b e r of culms of rice following Sesbania were 214%, 158%, and 121% greater, respectively, than those following rice. Ripening of the paddy occurred earlier if rice followed Sesbania. The beneficial effect of Sesbania may have been due to the trap-crop action of Sesbania against H. oryzae.
منابع مشابه
Effect of Sesbania rostrata on Hirschmanniella oryzae in Flooded Rice.
Microplot experiments on flooded soil infested with Hirschmanniella oryzae were conducted to investigate the influence of the legum Sesbania rostrata as a rotation crop with rice, Oryza sativa L. cv. Moroberekan. To avoid a green manure effect from S. rostrata, all aerial parts were removed at harvest. The dry weight of paddy, culms and leaves, and number of culms of rice following Sesbania wer...
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The survival of indigenous and introduced strains of Azorhizobium caulinodans in flooded soil and in the rice rhizosphere, where in situ Sesbania rostrata was incorporated before the rice crop, is reported. The azorhizobia studied were both root and stem nodulating. In a pot experiment, two crop cycles each of inoculated and noninoculated Sesbania-rice were compared with two crop cycles of floo...
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Phytochelatins (PCs) play an important role in detoxification of heavy metals in plants. PCs are synthesized from glutathione by phytochelatin synthase (PCS), a dipeptidyltransferase. Sesbania rostrata is a tropical legume plant that can tolerate high concentrations of Cd and Zn. In this study, the S. rostrata PCS gene (SrPCS) and cDNAs were isolated and characterized. Southern blot and sequenc...
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The tropical legume Sesbania rostrata can be nodulated by Azorhizobium caulinodans on both its stem and its root system. Here we investigate in detail the process of root nodulation and show that nodules develop exclusively at the base of secondary roots. Intercellular infection leads to the formation of infection pockets, which then give rise to infection threads. Concomitantly with infection,...
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A total of 57 colonies of Agrobacterium species was isolated from the root nodules of five different leguminous plant namely Pisum sativum, Sesbania rostrata, Vigna mungo, V. radita and V. ungiculata by using yeast extract mannitol agar (YEMA). All the isolated colonies were belonged to Agrobacterium species. The isolated bacteria were characterized and identified as Agrobacterium rhizogenes ba...
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