Journal ArticleDOI
Light quality, symbiotic nitrogen fixation and growth in white clover plants
TLDR
Both photosynthetic rates per unit leaf area and shoot-root ratios were affected, however, the carbon/nitrogen economies of the plants and the fraction of the total plant weight allocated to nodule growth were unaffected.Abstract:
The possibilities of using light quality treatments to gain an understanding of the mechanisms controlling the allocation of photosynthate for symbiotic nitrogen fixation were studied. White clover (Trifolium repens) plants were grown at the same photon irradiance in red, blue and green light treatments. Growth, nodulation and the carbon/nitrogen economies of the plants were measured. Both photosynthetic rates per unit leaf area and shoot-root ratios were affected by the treatments. However, the carbon/nitrogen economies of the plants and the fraction of the total plant weight allocated to nodule growth were unaffected.read more
Citations
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Photomorphogenesis of white clover (Trifolium repens L.) phytochrome mediated effects on 14C-assimilate partitioning
TL;DR: The results demonstrated that the source-sink relationships were modified ; far-red plants partitioned more 14 C-assimilates to petioles and leaves than did control plants, at the expense of stolons and roots.
Journal ArticleDOI
Estimation of Biological N2 Fixation in a Clover-Grass System by the 15N Dilution Method and the Total-N Difference Method
TL;DR: It was indicated that under a high N regime the total-N difference method underestimated the amount of fixed N in the harvested clover material by up to 33%.
Journal ArticleDOI
Potential for Rhizobium Improvement
TL;DR: In this paper, the potential for rhizobium improvement was investigated and it was shown that potential for improvement can be achieved with the use of rhizophores. Critical Reviews in Biotechnology: Vol. 4, No. 1, pp. 1-74
Journal ArticleDOI
Detection of Neighboring Weeds Alters Soybean Seedling Roots and Nodulation
TL;DR: Low R : FR reflected from aboveground neighboring weeds reduced soybean seedling root length, surface area, and volume, including the number of nodules per plant, which may limit the plant’s ability to respond to subsequent abiotic and biotic stresses.
Journal ArticleDOI
In vitro nodulation of micropropagated plants of Leucaena leucocephala by Rhizobium
Vibha Dhawan,Sant S. Bhojwani +1 more
TL;DR: Micropropagated plants of Leucaena leucocephala nodulated with Rhizobium during the in vitro hardening stage, grew well on N-free-substrate and this is the first report of in vitro nodulation of micropropagate plants by RhIZobium.
References
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Journal ArticleDOI
The function of phytochrome in the natural environment—iii. measurement and calculation of phytochrome photoequilibria
Harry Smth,M. G. Holmes +1 more
TL;DR: Phytochrome photoequilibria have been measured in dark‐grown Phaseolus uulgaris L. and Cucurbita pepo I. hypocotyl hooks which had been exposed to various natural and artificial radiation sources.
Journal ArticleDOI
Specific Leaf Weight and Photosynthesis in Alfalfa1
TL;DR: Specific leaf weight and net photosynthesis of 13 alfalfa clones were positively correlated and the possibility of increasing Pn by selecting for SLW is discusse.
Journal ArticleDOI
Carbon and nitrogen nutrition of nodulated roots of grain legumes
TL;DR: The authors know little about within-species differences due to cultivar, strain of Rhi-zobium or environment, or about the proportions of any heritable variations which might be sufficiently large to merit inclusion among the selection criteria of grain legume breeders.
Journal ArticleDOI
Effect of Source of Nitrogen on the Growth of Fiskeby Soya Bean: the Carbon Economy of Whole Plants
TL;DR: It is concluded that 'nodulated' plants grew more slowly than 'nitrate' plants in these experiments for at least two reasons: firstly, the symbiotic association fixed insufficient nitrogen for optimum growth and, secondly, the assimilation of the nitrogen which was fixed in the root nodules was more energy-demanding in terms of assimilate than that of plants which assimilated nitrogen by reducing nitrate in their leaves.
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