Symbiotic variability in Vicia faba. 2. genetic variation in Vicia faba

El-Sherbeeny, M.; Lawes, D. A.; Mytton, L. R.

doi:10.1007/bf00026998

Cited by 15 publications

(5 citation statements)

References 6 publications

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“…Furthermore, Minor with 29d was the only host-strain combination which outyielded the mineral nitrogen control, with other varieties and strains the best combinations rarely achieved 80% of the yield of the nitrogen control . These results once again emphasize the importance of quantifying the degree of effectiveness in relation to the growth potentials of the host genotypes (MYTTON, 1976 ;EL-SHERBEENY et al, 1977b) .…”

Section: Resultsmentioning

confidence: 78%

“…Their response to a single strain of rhizobium has been described earlier (EL-SHERBEENY et al ., 1977b) .…”

Section: Methodsmentioning

confidence: 99%

“…The present series of investigations into symbiotic variability in Vicia faba has already shown that there is a large amount of genetic variability amongst strains of Rhizobium leguminosarum in their ability to fix nitrogen with a single bean variety (EL-SHERBEENY et al ., 1977a), and between varieties of Vicia faba in their ability to fix nitrogen with a single strain of rhizobium (EL-SHERBEENY et al ., 1977b). It has also been shown that varieties can respond to mineral and rhizobium nitrogen differentially, resulting in large variety x nitrogen source interactions .…”

Section: Introductionmentioning

confidence: 99%

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Symbiotic variability in Vicia faba. 3. Genetic effects of host plant, rhizobium strain and of host × strain interaction

1977

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Vicia faba, field bean . Rhizobium leguminosarum . symbiotic variation . SUMMARY Six Vicia faba populations were grown in all possible combinations with six Rhizobium leguminosarum strains in order to estimate the relative importance of the three genetic components of symbiotic variability . Additive genetic effects of host genotype and rhizobium genotype accounted for only 8 .9°< and 11 .8% of the total phenotypic variation . Non-additive variation attributable to specific host genotype x rhizobium genotype interactions was by far the largest component of variation and accounted for 73 .8% of phenotypic differences . Therefore the greatest improvement in symbiotic nitrogen fixation is likely to arise from simultaneous selection of both symbionts .

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Section: Resultsmentioning

confidence: 78%

“…Their response to a single strain of rhizobium has been described earlier (EL-SHERBEENY et al ., 1977b) .…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Symbiotic variability in Vicia faba. 3. Genetic effects of host plant, rhizobium strain and of host × strain interaction

1977

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“…This variation is evidence for genetic control of the trait and has been reported in several grain legumes, including Viciufuba L. (broad bean) (EL SHERBEENY et al, 1977) Pisum sp. (field pea) (HOLL & LARUE, 1975), Phaseolus vulgaris L.(commonbean) (GRAHAM&R• SAS, 1977;GRAHAM, 1979;WESTERMANN&KOLAR, 1978), Glycine mux (L.) MERRILL (soybean) (WACEK & BRILL, 1976), and Vignu unguiculuta (L.) WALP.…”

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confidence: 99%

Inheritance of N2 fixation efficiency in cowpea

1986

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“…Maximum nodule dry weight during the pod-filling stage was 6-5-8-5 g/m 2 . The optimum plant population density for nodulation may vary with plant varieties for significant increases in nodule weight/m 2 have been reported between 10 and 40 plants/m 2 for the cultivar Minden while higher plant densities did not yield more nodule weight (Witty, Roughley & Day, 1980) probably because Minden is a bigger plant than Maris Bead (El-Sherbeeny, Lawes & Mytton, 1977) with a higher LAI for similar population. There was a positive correlation between nodule dry weight and leaf area per plant (r = 0-6-0-8) with the closest relationship during the flowering stage (Fig.…”

Section: Nodidationmentioning

confidence: 99%

Nodulation and nitrogen accumulation in field beans (Vicia Faba L.)

Igwilo

1982

J. Agric. Sci.

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The effects of plant population density, defoliation and removal of pods and apical buds on dry matter, nodulation and nitrogen accumulation in field bean {Viciafaba L.) were investigated in the field in 1973 and 1974.In 1973 seed yield, dry matter and nitrogen accumulation were similar at 50 and 150 plants/m 2 while in 1974 40 plants/m 2 was significantly different from 80, 120 and 160 plants/m 2 which were similar in these attributes. At similar densities, these crops generally had similar leaf areas and nodule weights/m 2 during the early podfilling period while at earlier growth stages leaf area and nodule development were greater at the higher plant population densities. Leaf area and nodule weight per plant were positively correlated as were absolute growth rate per plant and nitrogen assimilation rate per unit weight of nodule. Substantial leaf removal reduced weight but not the nitrogen assimilation rate of nodules determined from plant nitrogen content. Leaf removal did not significantly reduce dry matter but reduced nitrogen yield by reducing seed yield provided that the removed leaves were accounted for.Pod removal reduced dry-matter and nitrogen yield as well as nitrogen assimilation rate of nodules. Pod removal, however, substantially increased number and weight of nodules. Most of these late-formed nodules were located on the older parts of the lateral roots. Removal of the shoot apex had minor effects on nitrogen yield but reduced nodulation towards the completion of pod-filling. nitrogen by the roots, but application of heavy doses of fertilizer nitrogen (125-375 kg N/ha) at Hodgson & Blackman (1956) observed that there planting time did not significantly increase the was a logarithmic reduction in the number of seed yield of field beans (McEwen, 1970a, b). mature pods per plant over a range of 10-67 plants/In field experiments carried out between 1973 m 2 of spring beans. They explained the plastic and 1974 nodulation and nodule nitrogen-fixing response of this yield component with increase in activity of field beans {Vicia faba L.) were studied plant density as partly due to a limited amount with a view to determining whether they were of available nitrogen to the plants (no measure-adequate to meet the demands of high yields, ments given) and to increasing internal competition especially during the reproductive phase of growth for available nitrogen between vegetative and and particularly at high densities, reproductive parts.

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Symbiotic variability in Vicia faba. 2. genetic variation in Vicia faba

Cited by 15 publications

References 6 publications

Symbiotic variability in Vicia faba. 3. Genetic effects of host plant, rhizobium strain and of host × strain interaction

Symbiotic variability in Vicia faba. 3. Genetic effects of host plant, rhizobium strain and of host × strain interaction

Inheritance of N2 fixation efficiency in cowpea

Nodulation and nitrogen accumulation in field beans (Vicia Faba L.)

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