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

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Abstract
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, cv. 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. 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.

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