Titlebook: Opportunities for Biological Nitrogen Fixation in Rice and Other Non-Legumes; Papers presented at J. K. Ladha,F. J. Bruijn,K. A. Malik Boo

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The impact of molecular systematics on hypotheses for the evolution of root nodule symbioses and imSwensen et al., 1994; Soltis et al., 1995). Molecular data support a single origin of the . for root nodule symbiosis (Soltis et al., 1995) and at the same time support the occurrence of multiple origins of symbiosis within this group (Doyle, 1994; Swensen, 1996; Swensen and Mullin, In Press).

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Book 1997s, thus partly increasing the efficiency of the plants‘ use of applied N. The other is to increase the ability of the rice system to fix its own N. The latter approach is a long-term strategy, but it would have enormous environmental benefits while helping resource-poor farmers. Furthermore, farmers

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the plants, thus partly increasing the efficiency of the plants‘ use of applied N. The other is to increase the ability of the rice system to fix its own N. The latter approach is a long-term strategy, but it would have enormous environmental benefits while helping resource-poor farmers. Furthermore, farmers978-0-7923-4748-4978-94-011-7113-7