Prospects For The Future Use Of Legumes

Howieson, John; Yates, Ron; Foster, Kevin J.; Real, Daniel; Besier, R.B.

doi:10.1007/978-1-4020-3548-7_12

Cited by 45 publications

(66 citation statements)

References 108 publications

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“…Even in natural ecosystems where there is no factory-made fertilizers and animal waste, plant and microbial N needs are fully and dependent on the conversion of dinitrogen (N2) air by various types of prokaryotic microbes. For soybean, the existence and effectiveness of root nodules is critical (Zuberer, 1999;Elmerich and Newton., 2007;Graham, 2008;Howieson et al, 2008). Effective root nodules capable of meeting the needs of up to 75% nitrogen (Jutono, 1985;Anonymous, 1986;Ohyama et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Exogenous Application of Tryptophan and Indole Acetic Acid (Iaa) to Induce Root Nodule Formation and Increase Soybean Yield in Acid, Neutral and Alkaline Soil

Sudadi¹,

Suryono²

2015

Agrivita.J.Agr.Sci

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The research aimed to study whether soil pH affects exogenous application of amino acid tryptophan and IAA in increasing root nodules and soybean yield. The experiment was conducted in greenhouse using 20 cm diameter plastic pot filled with fine soil, arranged in completely randomized design (CRD) with four treatments. Each treatment combination was repeated three times. Three seeds of local soybean variety were planted into each pot then to remain one plant a week after planting. Variables observed were root nodules number, shoot dry weight and seed yield. Plant nutrients were supplied in the form of solution to meet crop needs. The data obtained were analyzed statistically by F test at 5% of level confidence, followed by Duncan's multiple range test when there was a significant effect. The results showed that both exogenous amino acid tryptophan and IAA increased number of root nodules, shoot and root dry weight and soybean yield. Higher root nodules number was taken from the treatment combination of 0.001 ppm IAA applied at V 3 in Alfisol and Vertisols, and 1.0 ppm on Entisols. However, the highest soybean yields were taken from the treatment combination of 1.0 ppm tryptophan applied at V 0 in Alfisols (6.51 g plant -1).

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Section: Introductionmentioning

confidence: 99%

Exogenous Application of Tryptophan and Indole Acetic Acid (Iaa) to Induce Root Nodule Formation and Increase Soybean Yield in Acid, Neutral and Alkaline Soil

Sudadi¹,

Suryono²

2015

Agrivita.J.Agr.Sci

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“…Therefore, perennial legume species exhibiting free-germination or that can be quickly and easily selected to become free germinating will be strong candidates for later phases of the pipeline. Additionally, seedling establishment of perennial forage legumes is slow compared to annuals possibly because they carry high genetic load or they invest in a substantial root system prior to developing above ground foliage [7,33]; however, selection for perennial legumes with divergent root/shoot ratios has been previously accomplished [37]. We expect that increased seedling vigor and effective establishment can be improved via selection in candidates with poor establishment rates.…”

Section: Crop Establishmentmentioning

confidence: 99%

“…Even so, perennials with high overall fecundity are especially desirable candidates. Lastly, while many wild herbaceous perennial legumes and cultivated forage legumes are entomophilous and allogamous [7], the preferred domesticates would be capable of self-pollination and autogamy to ensure high yields by reducing dependence on pollinators.…”

Section: Yield Potentialmentioning

confidence: 99%

“…The well-known symbiotic relationship between legumes and root-nodule bacteria (hereafter, rhizobia) supplies biologically fixed nitrogen (BNF) to natural and agroecosystems around the globe [6]. BNF, which may be considered the most fundamentally important biological process on earth aside from photosynthesis [7], reduces more than 100 Tg dinitrogen to ammonia each year [8]. This form of nitrogen (N) is directly useable by legumes, and eventually, through nutrient cycling and consumption, becomes available to other plants and organisms.…”

Section: Introductionmentioning

confidence: 99%

“…Despite all their benefits, less than 15 species of grain legumes and 50 forage legumes are globally traded and commercially important. This suggests that thousands of species may have been overlooked for their potential utility to humans and unique adaptations to their native environments [7,12]. Domestication and development of new or alternative legume crops could increase crop diversity and reduce human reliance on only a few major food crops, and if done thoughtfully, could improve the resilience and sustainability of food production [13].…”

Section: Introductionmentioning

confidence: 99%

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Perennial Grain Legume Domestication Phase I: Criteria for Candidate Species Selection

et al. 2018

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Annual cereal and legume grain production is dependent on inorganic nitrogen (N) and other fertilizers inputs to resupply nutrients lost as harvested grain, via soil erosion/runoff, and by other natural or anthropogenic causes. Temperate-adapted perennial grain legumes, though currently non-existent, might be uniquely situated as crop plants able to provide relief from reliance on synthetic nitrogen while supplying stable yields of highly nutritious seeds in low-input agricultural ecosystems. As such, perennial grain legume breeding and domestication programs are being initiated at The Land Institute (Salina, KS, USA) and elsewhere. This review aims to facilitate the development of those programs by providing criteria for evaluating potential species and in choosing candidates most likely to be domesticated and adopted as herbaceous, perennial, temperate-adapted grain legumes. We outline specific morphological and ecophysiological traits that may influence each candidate's agronomic potential, the quality of its seeds and the ecosystem services it can provide. Finally, we suggest that perennial grain legume breeders and domesticators should consider how a candidate's reproductive biology, genome structure and availability of genetic resources will determine its ease of breeding and its domestication timeline.

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Enhanced nodulation and symbiotic effectiveness of Medicago truncatula when co-inoculated with Pseudomonas fluorescens WSM3457 and Ensifer (Sinorhizobium) medicae WSM419

2011

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Aims Low numbers of rhizobia in soil or inoculants delay nodulation and decrease symbiotic legume productivity. This study investigated the effect of coinoculation with a helper bacterium, Pseudomonas fluorescens WSM3457 on the Medicago truncatulaEnsifer (Sinorhizobium ) medicae WSM419 symbiosis challenged by a low inoculum dose. Methods In a glasshouse experiment the effect of coinoculation with WSM3457 on the kinetics of nodule initiation and development was assessed 5, 7, 10, 14, 17, 21, and 42 days after inoculation of M. truncatula cv. Caliph with 10 3 cells/plant of E. medicae WSM419. Results Co-inoculated plants had enhanced rate of nodule initiation and development, greater numbers of larger crown nodules, and by day 42 accumulated more N than plants inoculated with E. medicae WSM419 alone. Nodule development was altered by co-inoculation. Approximately 25% of nodule initials on co-inoculated plants formed in closely associated pairs, young nodules were larger with multiple meristems and developed into cluster-like multilobed nodules compared to those on WSM419 inoculated plants. Molecular typing showed WSM3457 occupied a significant proportion of root nodules on co-inoculated plants. Conclusion Co-inoculation with P. fluorescens WSM3457 enhanced symbiotic effectiveness of M. truncatula when inoculated with a low inoculum dose of E. medicae WSM419.

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Prospects For The Future Use Of Legumes

Cited by 45 publications

References 108 publications

Exogenous Application of Tryptophan and Indole Acetic Acid (Iaa) to Induce Root Nodule Formation and Increase Soybean Yield in Acid, Neutral and Alkaline Soil

Exogenous Application of Tryptophan and Indole Acetic Acid (Iaa) to Induce Root Nodule Formation and Increase Soybean Yield in Acid, Neutral and Alkaline Soil

Perennial Grain Legume Domestication Phase I: Criteria for Candidate Species Selection

Enhanced nodulation and symbiotic effectiveness of Medicago truncatula when co-inoculated with Pseudomonas fluorescens WSM3457 and Ensifer (Sinorhizobium) medicae WSM419

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