Early Maturing Soybean Nodulation and Performance with Selected Bradyrhizobium japonicum Strains

1907 ◽  
Vol 84 (3) ◽  
pp. 449-458 ◽  
Author(s):  
J. V. Wiersma ◽  
J. H. Orf
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Early Maturing ◽  
And Performance ◽  
Soybean Nodulation

INFLUENCE OF SINGLE STRAINS AND A COMMERCIAL MIXTURE OF Bradyrhizobium japonicum ON GROWTH, NITROGEN ACCUMULATION AND NODULATION OF TWO EARLY-MATURING SOYBEAN CULTIVARS

1988 ◽  
Vol 68 (2) ◽  
pp. 411-418 ◽  
Author(s):  
L. D. BAILEY
Keyword(s):  
Glycine Max ◽  
Soil Temperature ◽  
Bradyrhizobium Japonicum ◽  
Nodule Formation ◽  
Growth Stages ◽  
Nitrogen Accumulation ◽  
Plant Nitrogen ◽  
Commercial Mixture ◽  
Early Maturing ◽  
Glycine Max L

Seven single strains and a commercial mixture of Bradyrhizobium japonicum were evaluated in association with two early-maturing Canadian soybean (Glycine max (L.) Merrill) cultivars, Maple Presto and Maple Amber. Inoculated and uninoculated plants were grown in pails outdoors. Soil temperature at 15 cm depth was monitored throughout the experiment. At the V2, V3, R2 and R4 growth stages, whole plants were removed from the pails. Nodules were counted and weighed; roots and tops were separated, weighed and analyzed for total nitrogen. Bradyrhizobium japonicum strains 61A148, 61A196, 61A194 and 61A155 were similar in effectiveness, but superior to strains 61A124a, 61A118b, 61A101c and the commercial mixture in earliness of nodule formation, number and weight of nodules per plant, and in promoting greater root and top growth and plant nitrogen accumulation. There were indications that soil temperature may have affected nodulation. Maple Amber showed the greater potential for symbiotic nitrogen fixation. This cultivar supported earlier nodulation, had a greater number of nodules, accumulated more nitrogen in the tops and roots and had greater growth than Maple Presto.Key words: Soybean, Glycine max (L.) Merrill, soil temperature, soybean growth stages, Bradyrhizobium, nodulation

Frost Injury and Performance of Coffee at 23° S in Brazil

1986 ◽  
Vol 22 (1) ◽  
pp. 71-74 ◽  
Author(s):  
A. Androcioli Filho ◽  
R. Siqueira ◽  
P. H. Caramori ◽  
M. A. Pavan ◽  
T. Sera ◽  
...  
Keyword(s):  
Germplasm Collection ◽  
Frost Hardiness ◽  
Yield Potential ◽  
Arabica Coffee ◽  
Frost Injury ◽  
Early Maturing ◽  
And Performance

SUMMARYEighteen arabica coffee introductions from the USDA germplasm collection were planted at 23° S latitude in Brazil from 1977 to 1982 to assess their yield potential and frost hardiness, compared with the cultivar Catuai Amarelo which is extensively planted in Brazil. Nine of the introductions had similar yields to Catuai Amarelo. Erecta T966 and Harrar yielded as well as Catuai Amarelo and were also more frost hardy. Tall, early maturing coffee varieties showed the least frost injury.

scholarly journals A new PGPR co-inoculated with Bradyrhizobium japonicum enhances soybean nodulation

2014 ◽  
Vol 169 (7-8) ◽  
pp. 609-615 ◽  
Author(s):  
Oscar Masciarelli ◽  
Analía Llanes ◽  
Virginia Luna
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Soybean Nodulation

Effect of chitosan polymer and inoculated with B. japonicum on soybean germination survival of seedling, nodulation and bacteria viability on seeds

2019 ◽  
Author(s):  
Costales Daimy ◽  
Nápoles M. C. ◽  
Falcón- C. Rodríguez ◽  
Alejandro González-Anta ◽  
Gustavoo Petit ◽  
...  
Keyword(s):  
Seed Germination ◽  
Bradyrhizobium Japonicum ◽  
Seed Storage ◽  
Crop Species ◽  
Seed Survival ◽  
Storage Times ◽  
Number Of Bacteria ◽  
Germinated Seeds ◽  
Soybean Nodulation

Chitosan is applied to stimulate seed germination and to extend in various crop species. The aim of this work was to evaluate a chitosan polymer on the viability of Bradyrhizobium japonicum on seeds and their effect to improve seed and bacteria survival and soybean nodulation in two application sequences inoculant- polymer and different storage times. The polymer did not affect the bacteria viability on seeds, neither seed survival. The application of chitosan before the inoculant had the best percentages of germinated seeds and the seedlings quality. Chitosan concentrations between 100 and 1000 mg L-1 favoured germination, the number of bacteria colonies on seeds and the soybean nodulation until 30 days of seed storage.

scholarly journals Lysogeny in Bradyrhizobium japonicum and Its Effect on Soybean Nodulation †

1992 ◽  
Vol 58 (10) ◽  
pp. 3360-3366 ◽  
Author(s):  
H. M. Abebe ◽  
M. J. Sadowsky ◽  
B. K. Kinkle ◽  
E. L. Schmidt
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Soybean Nodulation

scholarly journals Survival and Competitiveness of Bradyrhizobium japonicum Strains 20 Years after Introduction into Field Locations in Poland

2015 ◽  
Vol 81 (16) ◽  
pp. 5552-5559 ◽  
Author(s):  
Dorota Narożna ◽  
Krzysztof Pudełko ◽  
Joanna Króliczak ◽  
Barbara Golińska ◽  
Masayuki Sugawara ◽  
...  
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Field Experiments ◽  
Indigenous Populations ◽  
Content Type ◽  
Soybean Rhizobia ◽  
Competitive Relations ◽  
Competitive Success ◽  
Soybean Plants ◽  
Soybean Nodulation

ABSTRACTIt was previously demonstrated that there are no indigenous strains ofBradyrhizobium japonicumforming nitrogen-fixing root nodule symbioses with soybean plants in arable field soils in Poland. However, bacteria currently classified within this species are present (together withBradyrhizobium canariense) as indigenous populations of strains specific for nodulation of legumes in the Genisteae tribe. These rhizobia, infecting legumes such as lupins, are well established in Polish soils. The studies described here were based on soybean nodulation field experiments, established at the Poznań University of Life Sciences Experiment Station in Gorzyń, Poland, and initiated in the spring of 1994. Long-term research was then conducted in order to study the relation betweenB. japonicumUSDA 110 and USDA 123, introduced together into the same location, where no soybean rhizobia were earlier detected, and nodulation and competitive success were followed over time. Here we report the extra-long-term saprophytic survival ofB. japonicumstrains nodulating soybeans that were introduced as inoculants 20 years earlier and where soybeans were not grown for the next 17 years. The strains remained viable and symbiotically competent, and molecular and immunochemical methods showed that the strains were undistinguishable from the original inoculum strains USDA 110 and USDA 123. We also show that the strains had balanced numbers and their mobility in soil was low. To our knowledge, this is the first report showing the extra-long-term persistence of soybean-nodulating strains introduced into Polish soils and the first analyzing the long-term competitive relations of USDA 110 and USDA 123 after the two strains, neither of which was native, were introduced into the environment almost 2 decades ago.

A BIOASSAY FOR EFFECTS OF SOYBEAN ROOT EXTRACTS ON SOYBEAN NODULATION AND ROOT GROWTH

1989 ◽  
Vol 69 (1) ◽  
pp. 239-242
Author(s):  
MARGARET C. GAWIENOWSKI ◽  
JAY B. PETERSON
Keyword(s):  
Glycine Max ◽  
Root Growth ◽  
Bradyrhizobium Japonicum ◽  
Root Extracts ◽  
Soybean Root ◽  
Bioassay Procedure ◽  
Soybean Nodulation

A bioassay procedure was developed using a modified Leonard jar system to test effects of soybean (Glycine max ’Clay’) root extracts and the absorbent polyvinylpolpyrollidone on soybean root growth and nodulation from Bradyrhizobium japonicum. Root growth and root browning were affected and were correlated with nodule number.Key words: Glycine max nodulation, polyvinylpolypyrollidone, root extracts

scholarly journals Growth and Competitive Infection Behaviors of Bradyrhizobium japonicum and Bradyrhizobium elkanii at Different Temperatures

Horticulturae ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 41
Author(s):  
Md Hafizur Rahman Hafiz ◽  
Ahsanul Salehin ◽  
Kazuhito Itoh
Keyword(s):  
High Temperatures ◽  
Bradyrhizobium Japonicum ◽  
Gene Sequence ◽  
Soybean Seeds ◽  
Local Climate ◽  
Climate Conditions ◽  
Its Gene ◽  
Different Temperatures ◽  
Bradyrhizobium Spp ◽  
Soybean Nodulation

Growth and competitive infection behaviors of two sets of Bradyrhizobium spp. strains were examined at different temperatures to explain strain-specific soybean nodulation under local climate conditions. Each set consisted of three strains—B. japonicum Hh 16-9 (Bj11-1), B. japonicum Hh 16-25 (Bj11-2), and B. elkanii Hk 16-7 (BeL7); and B. japonicum Kh 16-43 (Bj10J-2), B. japonicum Kh 16-64 (Bj10J-4), and B. elkanii Kh 16-7 (BeL7)—which were isolated from the soybean nodules cultivated in Fukagawa and Miyazaki soils, respectively. The growth of each strain was evaluated in Yeast Mannitol (YM) liquid medium at 15, 20, 25, 30, and 35 °C with shaking at 125 rpm for one week while measuring their OD660 daily. In the competitive infection experiment, each set of the strains was inoculated in sterilized vermiculite followed by sowing surface-sterilized soybean seeds, and they were cultivated at 20/18 °C and 30/28 °C in a 16/8 h (day/night) cycle in a phytotron for three weeks, then nodule compositions were determined based on the partial 16S-23R rRNA internal transcribes spacer (ITS) gene sequence of DNA extracted from the nodules. The optimum growth temperatures were at 15–20 °C for all B. japonicum strains, while they were at 25–35 °C for all B. elkanii strains. In the competitive experiment with the Fukagawa strains, Bj11-1 and BeL7 dominated in the nodules at the low and high temperatures, respectively. In the Miyazaki strains, BjS10J-2 and BeL7 dominated at the low and high temperatures, respectively. It can be assumed that temperature of soil affects rhizobia growth in rhizospheres and could be a reason for the different competitive properties of B. japonicum and B. elkanii strains at different temperatures. In addition, competitive infection was suggested between the B. japonicum strains.

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