The response to various pollination treatments in inbred lines of horse and tick beans (Vicia faba L.)

1974 ◽  
Vol 82 (3) ◽  
pp. 531-534 ◽  
Author(s):  
Gillian Toynbee-Clarke

SUMMARYFourth and fifth generation inbred lines of horse and tick spring beans were used for pollination studies.Treatments included tripping; emasculation followed by self- or cross-pollination at both the bud and mature flower stage; self-pollen rubbed on to the stigma; and the flower truss left undisturbed. Treatment means showed that there was no significant difference between leaving the flower truss undisturbed and tripping, but all other treatments differed significantly (P = 0·01) from these two. There was no difference in number of seeds set per flower between self- or cross-pollination following emasculation.Tick inbred lines set more seeds per flower over all treatments than horse inbreds. Differences were seen between tick and horse inbreds when the flower truss was left undisturbed; some tick inbreds set seed, but no seed was set on the horse inbreds. An association between seed size and autofertility is suggested.Results from the horse inbreds were in agreement with previous pollination studies on inbred lines of winter beans. The implications of these studies to plant breeding are discussed.

1988 ◽  
Vol 101 (4) ◽  
pp. 277-291 ◽  
Author(s):  
B. Bjerg ◽  
E. Kbmeyer ◽  
B. O. Eggum ◽  
T. Larsen ◽  
G. Robbelen ◽  
...  

1968 ◽  
Vol 70 (3) ◽  
pp. 299-301 ◽  
Author(s):  
A. Eden

SUMMARYStudies were made of the proximate and mineral compositions of modern strains of both spring· and winter-sown beans. The majority of the winter beans were of the Throws M.S. variety, of the spring beans Minors. On the dry-matter basis spring beans averaged 31·4% crude.protein, winter beans 26·5%—a highly significant difference. The true protein values showed a parallel trend. Winter beans averaged 9% crude fibre, spring beans 8%, again a highly significant difference. The strains confirmed the usually accepted levels of oil and of the principal mineral components, except that modern beans appear to be richer in phosphorus.


1984 ◽  
Vol 64 (1) ◽  
pp. 43-46 ◽  
Author(s):  
P. B. E. McVETTY ◽  
J. NUGENT-RIGBY

Four populations of faba beans (Vicia faba L.) consisting of the black-spot-flowered varieties, Ackerperle, Diana, Herz Freya and UMFB-22, each combined with the white flowered variety, Triple White, were grown at three locations in each of 2 yr. The extent of natural cross pollination was estimated from a subsequent year’s grow-out of the Triple White test seed. The extent of natural cross pollination differed for varieties, locations and years, with years being the most significant. The year effect was probably due to different environmental stresses on the faba beans.Key words: Vicia faba, fertilization


Author(s):  
Ibrahim Elkhalil Benzohra ◽  
Hakima Belaidi

Background: Faba bean (Vicia faba L.) is thirst most important grain legume in the world and the first one in Algeria. The chocolate spot disease caused by Botrytis fabae Sard (BF), is the major constraint of this culture in Algeria when caused a destructive damages.Methods: The aim of this study is to find the sources of resistance for Seven varieties of faba beans (Giza 02, Giza 40, Giza 461, Sakha 02, Sakha 03, Precoce de Seville), by using the detached leaflet inoculation test for resistance to the two isolates from BF represent two different regions of northwest Algeria (Mascara and Relizane). Result: A significant difference (P less than 0.05) was observed in the reaction of the varieties which manifest themselves by a different reaction vis-à-vis the isolates of BF. Total sensitivity was observed in the four (4) varieties Giza02, Sakha01, Sakha02 and Sakha03, two (2) varieties (Giza40 and Ziban), are tolerant, while the variety named ‘Precoce de Seville’ showed significant resistance to both isolates from BF. These results showed a similar pathogenic behavior of two isolates of BF and variability in the level of reactions of the varieties of beans. The variety ‘Precoce de Seville’ showed promising results to be valued and cultivated in order to reduce the damage caused by this disease and reduce the use of chemicals.


1984 ◽  
Vol 64 (1) ◽  
pp. 95-103 ◽  
Author(s):  
G. G. ROWLAND ◽  
G. DUC ◽  
J. PICARD

An experiment was conducted at Dijon, France and Saskatoon, Canada to determine if apex excision or flower removal had an effect on ovule fertilization. Two lines of faba beans, cvs. Strube and 370, showed no effect of apex excision or flower removal on the frequency of ovule fertilization. The fertilization frequency, which averaged 55% for the experiment, was 10% higher at Dijon than Saskatoon and 30% higher in Strube than 370. Young-pod number, pod number, seed number and seed yield were all greater at Dijon. The abortion of fertilized flowers was high for all treatments and lines but particularly so in Strube with no flower removal. The data indicated that abortion was occurring at the pod level and not the seed level, suggesting that the average number of seeds per pod could be increased if the ovule fertilization frequency per flower could be improved.Key words: Vicia faba, fertilization frequency, fertility components, apex excision.


1987 ◽  
Vol 108 (2) ◽  
pp. 479-486 ◽  
Author(s):  
W. Aufhammer ◽  
Isabella Götz ◽  
Maria Peter

SummaryCompetitive and regulatory effects of defined inflorescences on the development of other inflorescences and subsequent yield performance of field beans (Vicia faba L.) were investigated. Genotypes differing greatly in yield performance (two inbred lines and the F1 hybrid produced from the two inbred lines) were used in both field and pot experiments. Yield was manipulated by the removal of defined inflorescences at various times and positions.In comparison with untreated control plants the removal of up to four inflorescences from basal, central or apical nodes caused a loss of yield potential of up to 65%. Nevertheless the final seed yield per plant was not reduced. This was because additional pods and seeds developed at remaining inflorescences. After the removal of inflorescences from either basal or apical regions of the plant significant overcompensation effects occurred. The effects were influenced by the growing conditions. The capacity for compensation existed at differing yielding levels regardless of different genotypes or growing conditions.The results are discussed with respect to the utilization of the initiated yield potential and to yield reliability.


1973 ◽  
Vol 81 (3) ◽  
pp. 445-448 ◽  
Author(s):  
T. E. Yassin

SUMMARYEstimates of genotypic and phenotypic variances and covariances were determined for yield and yield components in ten field beans varieties grown at two locations over three seasons.Substantial amounts of genotypic variance were obtained for yield/plot, 1000-seed weight and number of pods/plant. Variability in number of seeds/pod and much of the variation in yield/plant was attributable to environmental effects and their interaction with the varieties. Seed yield/plot was closely and positively correlated with number of pods/plant and yield/plant, while it was closely and negatively correlated with 1000-seed weight.The implications of these correlations for selection are discussed.


1979 ◽  
Vol 93 (3) ◽  
pp. 629-633 ◽  
Author(s):  
J. M. Day ◽  
R. J. Roughley ◽  
J. F. Witty

SUMMARYVicia faba cv. Minden was planted at densities ranging from 6 to 98 plants/m2. Nitrogen was applied to the soil as split dressings or as a foliar spray. CO2 concentration in the canopy was increased in some plots to 0·22% for 3 weeks during the early pod-filling stage.Yield and number of seeds per plant varied inversely with plant spacing between 9 and 98 plants/m2. Mean seed weight increased up to 13 plants/m2 and then remained constant between 13 and 98 plants/m2. Yield/ha was unaffected by plant density above 18 plants/m2.Application of 200 kg N/ha as ‘Nitro-Chalk’ (mixture of NH4NO3 and CaCO3) to the soil as split dressings did not affect yield or its components but 80 kg N/ha as urea applied in four foliar sprays increased yield by 361 kg/ha (8·6%). Recovery of the labelled nitrogen in the grain varied from 28% when applied during vegetative growth to 8% when applied in the reproductive phase and 15% in the foliar spray.The highest yield (5·12 t/ha) was obtained by supplementary CO2. The results suggest that there is no advantage in applying fertilizer nitrogen to well-nodulated spring beans.


1956 ◽  
Vol 48 (1) ◽  
pp. 104-114 ◽  
Author(s):  
A. K. Chakravarty ◽  
Jean M. Drayner ◽  
J. L. Fyfe

1. The reaction of spring and winter types of field beans and of Windsor broad beans to artificial vernalization treatments and to successional field sowing has been studied.2. The broad bean type came into flower earlier and at a lower node on the stem than any of the field bean types, and this was not affected by either vernalization treatments or successional sowing.3. The field bean types flowered at a low node when sown in winter, but in summer sowings the level of the first flowering node was much higher; the response of the winter types was more extreme than that of the spring types.4. In the summer sowings vernalized plants came into flower earlier and at a lower node than unvernalized, but in the winter sowings both vernalized and unvernalized material flowered at an equally low node.5. A convention for naming the different stems contributing to the yield was evolved, and using this it was shown that the date of sowing affected the stems produced.6. The survival of plants in the field was not found to be affected by vernalization previous to sowing.


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