Nodule formation and distribution during the establishment stage of six selections of winged bean

Iruthayathas, E. E.; Herath, H.M.W.

doi:10.1016/0304-4238(81)90055-8

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…At EC = 0.5 dS m-1 , the number of noduks per plant ( 12 to 13) did not difler among cultivars, although nodules on Lee soybean were slightly larger (3.1 mg nodule-1 ) than those on Jackson and winged bean (2.7mg nodule-1 ). The size and number of nodules on winged bean in this study were similar to those reported by others for container-grown winged bean (WQomer et al 1978, Ikram and Broughton, 1980and Iruthayathas and Herath, 1981. The very large (> 10 mm diameter) nodules sometimes found on wjnged bean by these and other authors were not present iri this study.…”

Section: Resultssupporting

confidence: 91%

Salinity Tolerance of Winged Bean as Compared to that of Soybean¹

Weil¹,

Khalil

1986

Agronomy Journal

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Winged bean [Psophocarpus tetragonolobus (L.) DC) has been called an underutilized crop with the potential to become a major protein crop for the tropics and subtropics. As with soybean [Glycine max (L.) Merr.) the introduction of winged bean to warm arid regions will be affected by tolerance to salinity. In this study a prolific Sri Lankan winged bean accession ('SLS47') and two soybean cultivars ('Jackson' and 'Lee') were grown in pots of sandy soil amended with NaCL to give saturated paste electrical conductivities (EC) of 0.5, 2.5, 4.5, 6.5 and 8.5 dS m-•. At 0.5 dS m-•, dry matter accumulation (0.84 g plant-•), nodule mass, (32 mg plant-•), and tissue N (24 mg N g-1 ) of winged bean were similar to those of both soybean cultivars. At 65 d after planting, however, specific nitrogenase activity by acetylene reduction assay was much lower for the winged bean (60 ~tmol ethylene g-•h-1 ) than for the soybean (160 to 190 ~tmol ethylene g-•h-1 ). The results indicated that winged bean was at least as tolerant as Lee soybean and more tolerant than Jackson. Though stunted, at 8.5 dS m-• winged bean showed significantly less foliar injury than did either of the soybean cultivars. For the soybean, the tissue N content was unchanged, but for winged bean it increased significantly with increasing salinity; suggesting that dry matter accumulation, especially by winged bean, was more sensitive to salinity than to N2 fixation. ----------------Additional index words: Sodium chloride toxicity, Glycine max (L.) Merr., Psochocarpus tetragonolobus, Saline-sodic soil, N 2 fixation, Acetylene reduction.----------------

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Section: Resultssupporting

confidence: 91%

Salinity Tolerance of Winged Bean as Compared to that of Soybean¹

Weil¹,

Khalil

1986

Agronomy Journal

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“…1. growth and phenology assessment in different growing conditions (Herath and Ormrod 1979;Anonymous 1980Anonymous , 1981Anonymous , 1982Rüegg 1981;Misra and Misra 1985;Okubo et al 1992); 2. development of high seed-yielding varieties (Nangju and Baudoin 1979;Erskine 1981a;Arumugan and Perera 1989); 3. nutritional profiling of edible parts (Anonymous 1980;Kortt 1980;Gross 1983;Kadam et al 1984;Prakash et al 1987); 4. nodulation ability (Hildebrand et al 1981c;Iruthayathas and Herath 1981;Vlassak 1982, 1987;Iruthayathas et al 1985) and 5. biotic and abiotic-stress tolerance studies (Karikari 1978;Thompson and Haryono 1979;Rüegg 1981;Price et al 1982;Weil and Khalil 1986;Prakash et al 1987).…”

Section: Synthesis Of Past Researchmentioning

confidence: 99%

“…"Ransom"), cowpea, hyacinth bean (Lablab purpureus), and pigeon pea (C. cajan). Using sandy loam soil collected from a plot where winged bean was previously grown, Iruthayathas and Herath (1981) showed that nodulation could begin as early as the second week after planting. Nodule distribution in accession from Indonesia (LBNC3, LBNC1), Nigeria (TPt2), PNG (UPS122), and Sri Lanka (SLS1, SLS6), was uniform across the rooting system, although with a higher number in the 30-60 mm root-zone, and a sharp decrease below 90 mm, probably due to decreasing aerobic conditions.…”

Section: Nodulation and N 2 -Fixation Activitymentioning

confidence: 99%

Winged bean (Psophocarpus tetragonolobus (L.) DC.) for food and nutritional security: synthesis of past research and future direction

Tanzi

Eagleton

et al. 2019

Planta

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Main Conclusion Winged bean is popularly known as "One Species Supermarket" for its nutrient-dense green pods, immature seeds, tubers, leaves, and mature seeds. This underutilised crop has potential beneficial traits related to its biological nitrogen-fixation to support low-input farming. Drawing from past knowledge, and based on current technologies, we propose a roadmap for research and development of winged bean for sustainable food systems. Reliance on a handful of "major" crops has led to decreased diversity in crop species, agricultural systems and human diets. To reverse this trend, we need to encourage the greater use of minor, "orphan", underutilised species. These could contribute to an increase in crop diversity within agricultural systems, to improve human diets, and to support more sustainable and resilient food production systems. Among these underutilised species, winged bean (Psophocarpus tetragonolobus) has long been proposed as a crop for expanded use particularly in the humid tropics. It is an herbaceous perennial legume of equatorial environments and has been identified as a rich source of protein, with most parts of the plant being edible when appropriately prepared. However, to date, limited progress in structured improvement programmes has restricted the expansion of winged bean beyond its traditional confines. In this paper, we discuss the reasons for this and recommend approaches for better use of its genetic resources and related Psophocarpus species in developing improved varieties. We review studies on the growth, phenology, nodulation and nitrogen-fixation activity, breeding programmes, and molecular analyses. We then discuss prospects for the crop based on the greater understanding that these studies have provided and considering modern plant-breeding technologies and approaches. We propose a more targeted and structured research approach to fulfil the potential of winged bean to contribute to food security.

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“…Though it has been traditionally grown in certain areas of the tropics for a long time, its present popularity in areas of improved agriculture throughout the tropics requires detailed information on its symbiotic specificity in nodulation and N2 fixation. Studies on the host rhizobia compatibility factors of winged bean have indicated the presence of a strong influence of both host and rhizobia genotypes on successful nodulation and Nz fixation (Iruthayathas and Herath, 1981;Iruthayathas and Vlassak, 1981). Thus, the introduction of this legume into new soils of the tropics warrants a careful Rhizobium strain selection program for the numerous selections of winged bean germplasm now available.…”

Section: Introdociionmentioning

confidence: 99%

The effect of light intensity on nodulation and N₂ fixation of winged bean Psophocarpus tetragonolobus Rhizobium strains

Iruthayathas

Vlassak

Reynders

1982

J Plant Nutrition & Soil

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Summary -ZusammenfassungTwo winged bean Rhizobium strains, RRIM 56 and NGR 258 were tested with different selections of winged bean Psophocarpus tetragonolobus and one selection of Psophocarpuspalustris under high and low sunlight intensities and long and short day photoperiods in pot experiments.Nodulation and N2 fixation by the strain RRIM 56 was not affected by light intensity and photoperiod and it showed very effective nodulation and N2 fixation. It was found to be capable of showing a N-gain of 140 kg per ha per 9 weeks and 750 kg per ha per year in winged bean selections. The strain NGR 258 was highly sensitive to light intensity and insensitive to photoperiod. High light intensity during the first two weeks after seedling emergence drastically inhibited nodulation. The light effect on this strain may relate to the reduction of tryptophan movement from shoot to root system. An experiment with tryptophan injection into the stem base indicates that the amount of tryptophan needed to produce indole -acetic acid in the root hairs plays an important role in controlling the infection and nodule initiation processes in winged bean.The conversion efficiency of tryptophan to the auxin indole-acetic acid of this strain was also lower than that of strain RRIM 56. The former converts tryptophan mostly via tryptamine, while the latter follows the pathway via indole -pyruvic acid. EinflufJ der Lichtintensitat

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Nodule formation and distribution during the establishment stage of six selections of winged bean

Cited by 7 publications

References 3 publications

Salinity Tolerance of Winged Bean as Compared to that of Soybean¹

Salinity Tolerance of Winged Bean as Compared to that of Soybean¹

Winged bean (Psophocarpus tetragonolobus (L.) DC.) for food and nutritional security: synthesis of past research and future direction

The effect of light intensity on nodulation and N₂ fixation of winged bean Psophocarpus tetragonolobus Rhizobium strains

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Nodule formation and distribution during the establishment stage of six selections of winged bean

Cited by 7 publications

References 3 publications

Salinity Tolerance of Winged Bean as Compared to that of Soybean1

Salinity Tolerance of Winged Bean as Compared to that of Soybean1

Winged bean (Psophocarpus tetragonolobus (L.) DC.) for food and nutritional security: synthesis of past research and future direction

The effect of light intensity on nodulation and N2 fixation of winged bean Psophocarpus tetragonolobus Rhizobium strains

Contact Info

Product

Resources

About

Salinity Tolerance of Winged Bean as Compared to that of Soybean¹

Salinity Tolerance of Winged Bean as Compared to that of Soybean¹

The effect of light intensity on nodulation and N₂ fixation of winged bean Psophocarpus tetragonolobus Rhizobium strains