Author: Randall Gene GroatPublisher:
ISBN:
Category :
Languages : en
Pages : 248
Book Description
Host Plant Metabolism of Symbiotically Fixed Nitrogen in Alfalfa (Medicago Sativa L.) Root Nodules
Author: Randall Gene GroatSymbiotic Nitrogen Fixation in Alfalfa (Medicago Sativa L.) During Vegetative Regrowth
Author: Kathleen Ann FishbeckPublisher:
ISBN:
Category :
Languages : en
Pages : 162
Book Description
Symbiotic Nitrogen Fixation
Author: P. GrahamPublisher: Springer Science & Business Media
ISBN: 9401110883
Category : Science
Languages : en
Pages : 206
Book Description
During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.
Statistical Evaluation of Factors Affecting Symbiotic Nitrogen Fixation by Alfalfa (Medicago Sativa L.) and Soybean (Glycine Max Merr.)
Author: Ceferino Jucutan MartinezPublisher:
ISBN:
Category :
Languages : en
Pages : 552
Book Description
Inferencias estatisticas foram usadas para avaliar fatores que afetam a fixacao simbiotica de nitrogenio por alfafa (Medicago sativa L.) e soja (Glycine max Merr.). No estudo foram incluidos os efeitos de niveis de inoculacao, numero de inoculacao sobre a eficiencia simbiotica.
Nitrogen-fixing Leguminous Symbioses
Author: Michael J. DilworthPublisher: Springer Science & Business Media
ISBN: 1402035489
Category : Science
Languages : en
Pages : 419
Book Description
Nodules produced on legume roots by root-nodule bacteria provide the major nitrogenous input into natural and agricultural systems worldwide. This book provides an in-depth and up-to-the-minute analysis of what is known about this symbiosis, its origins, the process of nodule formation and development, and the biochemistry and genetics of nodular nitrogen fixation. It also reviews the physiology of the root-nodule bacteria themselves, their ecology in both natural and agricultural systems, and how we can introduce new legumes along with the bacteria they require. This book is recommended for scientists working with root nodule bacteria or host legumes, agronomists, forestry scientists, and soil scientists.
Plant Genes Involved in Nitrogen Fixation and Productivity of Alfalfa
Author: Nitrogen Fixation: a Consideration of Factors which Affect Root Nodule Efficiency in Medicago Sativa L.
Author: Brent Gregg HallockAlfalfa Nodule Enzymes Linking Carbon and Nitrogen Metabolism
Author: Cynthia Arlene HensonPublisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 260
Book Description
Partitioning of Total N and Symbiotically Fixed N? in Soybeans and Alfalfa
Author: Robert Allen HensonPublisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 214
Book Description
The Interactive Effects of Water Salinity and Management on Symbiotic Nitrogen Fixation in Alfalfa
Author: Thomas J. KeckPublisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 200
Book Description
A greehhouse study was conducted to assess the interactive effects of three irrigation water salinity levels (1. 0, 3. 0, and 9. 0 mmho/cm) and three quantities of water app lied per irrigation (120, 240, 360 ml) on plant growth and nitrogen fixation by alfalfa (Medicago sativa L. cv. Resistador). Harvest dates corresponded t o 10, 30, and 50 days after the initiation of salt and water treatments which were started after nodulation had been established in young plants. Alfalfa top growth was limited by both salt and water s tresses. Irrigation water s alinity had a grea t er effec t on top growt h than root grm;th while root distribution was unaffected by either the quant i ty of water app l ied or by water salinity. The effects of salinity on pl ant growth were reduced in the presence of l imi ting moisture. The specific nodul e act ivi t y (mmol c2H4/hr/g) of water s tressed alfalfa pl ants was enhanced by increasing the quantity of wat er applied a t each irriga t ion and was adversely effected by increased irrigation water salinity. In contrast, both nodulation and nodule growth were insensitive t o salt stress and sensi tive only to severe mo i s ture s tress. Alfalfa plants continued to exhibit acetylene reducing capacity at the third harvest even under severe moisture and salt stress. The species apparently continues to fix nitrogen even though environmental stress is quite substantial.