THE RESPONSE OF SELECTED Phaseolus vulgaris L. CULTIVARS TO OZONE UNDER CONTROLLED FUMIGATION AND AMBIENT FIELD LEVELS

1982 ◽  
Vol 62 (3) ◽  
pp. 561-569 ◽  
Author(s):  
P. HUCL ◽  
W. D. BEVERSDORF

In 1977, a cross section of the Phaseolus vulgaris L. world collection was screened for ozone insensitivity in fumigation chambers. A number of cultivars were selected for their high level of insensitivity to ozone (O3). These selections, along with three cultivars reported as highly insensitive and a number of white bean cultivars, were further evaluated under more stringent conditions in a controlled environment as well as under field conditions over a 2-yr period. All the white bean cultivars were sensitive to O3 under controlled conditions, but under field conditions later maturing cultivars escaped serious injury from ambient O3 levels. Early-maturing white bean cultivars tended to suffer reduced yields and earlier senescence compared with plots chemically protected from ambient O3 injury. The yields of cultivars selected as O3 insensitive in chamber fumigations were not affected by ambient field O3 levels in the field trials.

1987 ◽  
Vol 67 (1) ◽  
pp. 11-19 ◽  
Author(s):  
D. L. SMITH ◽  
D. J. HUME

Acetylene reduction estimates of N2 fixation and nodulation by white bean (Phaseolus vulgaris) are generally low under field conditions. Recent reports using 15N dilution have resulted in higher estimates. In the work reported here, estimates of white bean N2 fixation determined by acetylene reduction, 15N dilution, and the difference method were compared under field conditions. Difference and acetylene reduction assays were also compared under controlled environment conditions. Soybean (Glycine max), which has given high estimates by all three methods and is generally well nodulated under field and controlled environment conditions, was included as a control. Results from field experiments showed that the 15N dilution and difference method estimates were not different within or between species. Acetylene reduction estimates of N2 fixation for soybean grown in the field or under controlled environment conditions were about half those of the difference assay. This was also true for white bean in the growth room, but in the field the acetylene reduction estimate for white bean was about 10% that of the difference or 15N dilution method. Either the acetylene reduction assay is not applicable to white bean under field conditions, or white bean has access to a source of N not detected by acetylene reduction and not available to soybean or the control plants used in the 15N dilution and difference methods. In support of the latter possibility, white beans grown under controlled environment conditions, without soil N, nodulated and reduced acetylene as well as soybeans grown under the same conditions.Key words: Phaseolus vulgaris, Glycine max, N2 fixation assay methods, alternate N sources, bean (white), soybean


Author(s):  
Cao Đăng Nguyên ◽  
Nguyễn Thị Cẩm Hạnh

Đã điều tra lectin của 6 giống đậu cô ve thấy rằng cả 6 giống đều có hoạt tính lectin trong đó giống đậu cove hạt trắng dạng bụi (white bean core bush type white seeds) có hoạt tính lectin mạnh nhất, đặc biệt đối với hồng cầu trâu, bò, lợn. Lectin của 6 giống này đều không có biểu hiện đặc hiệu nhóm máu. Lectin đậu cove hạt trắng dạng bụi hoạt động tốt nhất ở nhiệt độ 300C – 400C, pH 6,8 – 7,6. Các đường α-D-glucose, α-D-galactose, D-mannose, D-fructose, D-saccharide,  D-lactose, D-arabinose và D-manitose ở nồng độ 0,05 – 0,1 M có tác dụng kìm hãm hoạt tính của lectin đậu cove hạt trắng dạng bụi. Lectin này cũng bị kìm hãm bởi protein của một số huyết thanh người và động vật (trâu, bò, lợn). Đã tinh sạch lectin đậu cove hạt trắng dạng bụi có độ tinh sạch gấp khoảng 52 lần so với dịch thô ban đầu. Trên gel polyacrylamide thấy xuất hiện 5 band có khối lượng phân tử trong khoảng 30 – 97 kDa.


2006 ◽  
Vol 108 (2) ◽  
pp. 133-142 ◽  
Author(s):  
S.R. Martins ◽  
F.J. Vences ◽  
L.E. Sáenz de Miera ◽  
M.R. Barroso ◽  
V. Carnide

2004 ◽  
Vol 84 (3) ◽  
pp. 807-809 ◽  
Author(s):  
Hans-Henning Mündel, David Gehl ◽  
Henry C. Huang ◽  
Robert L. Conner

Arikara Yellow is an early-maturing heritage bean (Phaseolus vulgaris L.) cultivar with a tan-yellow seed belonging to the Canario mexicano (syn. Mantequilla) market class. It has a determinate bush type growth habit, with wide adaptation on the Canadian prairies. Arikara Yellow is resistant to white mould caused by Sclerotinia sclerotiorum (Lib.) de Bary and to three of four common races of anthracnose, caused by Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.-Scrib. Key words: Common bean, Phaseolus vulgaris, heritage bean, cultivar description


1986 ◽  
Vol 66 (3) ◽  
pp. 669-675 ◽  
Author(s):  
M. N. J. WAHAB ◽  
D. H. DABBS ◽  
R. J. BAKER

Because of interest in maximizing production per unit area in regions where the land base is limited, the effects of planting density; (16–116 plants m−2) and planting design on pod yield of bush snap bean (Phaseolus vulgaris L.) were measured in replicated field trials with cv. Harvester in 1980 and 1981. Three planting designs were used: (a) conventional row designs with interplant spacing of 5 cm and interrow spacing of 20, 45, 80 and 125 cm; (b) square designs with interplant and interrow spacings both at 10, 15, 20 and 25 cm; and (c) triangle designs (honeycomb) with plants arranged at equal distances of 10, 15, 20 and 25 cm from each of their six nearest neighbors. In all three planting designs, higher planting densities (up to 116 plants m−2) gave higher pod yields per unit area. Except for the lower response in the square design in 1981, increases in yield with increasing density were similar for all designs in both years. Pod yields did not differ from one design to the other in 1980. In 1981, the triangle design gave the highest average yield and the row design gave the lowest average yield. The results confirm observations of yield advantages in planting designs which use equal spacing in all directions.Key words: Yield-density relationship, row spacing, honeycomb design, snap bean, Phaseolus vulgaris


2015 ◽  
Vol 95 (1) ◽  
pp. 175-177
Author(s):  
P. M. Balasubramanian ◽  
H.-H. Mündel ◽  
S. Chatterton ◽  
R. L. Conner ◽  
A. Hou

Balasubramanian, P., Mündel, H.-H., Chatterton, S., Conner, R. L. and Hou, A. 2015. AAC Whitehorse great northern dry bean. Can. J. Plant Sci. 95: 175–177. AAC Whitehorse is a high-yielding, early-maturing great northern bean (Phaseolus vulgaris L.) cultivar with an upright, indeterminate bush growth habit, large seed size and partial field resistance to white mould. AAC Whitehorse was developed at the Agriculture and Agri-Food Canada (AAFC) Research Centre, Lethbridge, AB. AAC Whitehorse is suitable for irrigated wide row production in Alberta and Saskatchewan.


1988 ◽  
Vol 66 (2) ◽  
pp. 247-252 ◽  
Author(s):  
G. J. Boland ◽  
R. Hall

Relationships between the distribution and numbers of apothecia of Sclerotinia sclerotiorum (Lib.) de Bary and the distribution and incidence of white mold of white bean (Phaseolus vulgaris L.) were investigated in a field plot at Arkell, Ont., in 1981 and 1982. The spatial distributions of both apothecia and disease were aggregated and were most consistently described by the negative binomial distribution, although the Poisson, Poisson binomial and logarithmic with zeros distributions were also significant for some sampling dates. Numbers of apothecia were correlated with disease incidence within areas 1.4 (r = 0.07–0.67), 36 (r = 0.11–0.72), and 108 m2 (r = 0.21–0.95). The quantitative relationships between apothecia within a field of beans and the incidence of white mold may be useful in predicting the disease.


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