THE EFFECT OF ENVIRONMENT, APEX EXCISION AND FLOWER REMOVAL ON FERTILITY COMPONENTS OF FABA BEANS (Vicia faba L.)

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.

1998 ◽  
Vol 49 (1) ◽  
pp. 63 ◽  
Author(s):  
J. A. Palta ◽  
C. Ludwig

The effect of pod number on the seed yield and components of seed yield was examined for narrow-leafed lupin (Lupinus angustifolius L.) grown at a plant density of 36 plants/m2 in both the glasshouse and the field. Diflerent numbers of pods per plant in the glasshouse-grown lupin were generated by the application of N6-benzylaminopurine (BAP) to a specific number of flowers to ensure artificially that they set pods, and the subsequent removal of the remaining untreated flowers. Pod number ranged from 6 to 65 pods/plant in the glasshouse and was naturally distributed from 2 to 22 pods/plant in the field. Increases in seed yield per plant occurred as pod number per plant increased from 2 to 30 pods. No further increases in seed yield resulted when pod number per plant increased from 30 to 55 pods. Seed yield per plant was depressed as pod number increased from 55 to 65 pods. Seed size fell as pod number per plant increased over 20 pods and was less affected once the number of seeds per pod was reduced. The reduction in seed number per pod resulted from an increase in the number of seeds that aborted during seed filling. The data suggest that at a plant density of 36 plants/m2 there is potential for improving seed yield per plant by increasing the number of pods that reach maturity, provided it does not exceed 30 pods/plant. However, if consideration is given to producing large seeds, often preferred by buyers, the number of pods per plant should not exceed 20 pods.


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.


Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1088
Author(s):  
Mohamed Houssemeddine Sellami ◽  
Antonella Lavini ◽  
Davide Calandrelli ◽  
Giuseppe De Mastro ◽  
Cataldo Pulvento

Faba beans (Vicia faba L.), also known as fava beans, like other crops, are influenced by several factors: their genotype, environment, and management, as well as the interaction between these, have an important impact on seed yielding and seed quality traits. This study was conducted at three locations in South Italy between 2017 and 2019 to evaluate the sowing date effect on yield and yield components of three Vicia faba L., originating from cool climates. The results showed that seed yield (SY) and yield components declined with sowing delay. The crop’s environment (year × site) and management (sowing date) were found to explain 34.01% and 42.95% of the total seed yield variation, respectively. The data showed that the tested genotypes were positively influenced by the environment with sandy loam soil and early winter sowing date, resulting in either a greater number of SY and THS than in the other environment. The three faba bean genotypes showed tolerance to winter frost conditions in the two growing seasons.


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

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