INFLUENCE OF THE DECAPITATION AND PLANT DENSITY EFFECT ON THE MANIFESTATIONS OF REPRODUCTIVITY IN BREEDING BROCCOLI LINES

A seed-productive sowing from two breeding broccoli lines grown by early field production technology in two treatments of cultivation (control and treatment with central flower head decapitation) by two planting schemes: 80/60 cm and 80/40 cm was set experimentally during the period 2004–2005. The study aimed to establish the effect of decapitation and the influence of plant density on the height and number of the pedicles, sets/pedicles number, seeds/pods number, seeds/plant number and absolute weight and germination of the seeds in cultivation in two schemes.
It was established that after central flower head decapitation the values of all reproductive characters except for pedicles number increase.
Decapitation has the strongest effect on the individual seeds productivity that is 8–9.47 g/plants and in this way the seed yield is increased several times (2.35–3.17 g/plants) given in plant cultivation without central flower head decapitation.
Decapitation has a positive effect on the seed quality.
The seeds have greater absolute weight 3.05–3.30 g and higher germination 92.90–95.55% compared to the germination of the control treatment.
Plant density exerts different influence as in growing by 80/40 cm planting scheme an increase of pedicles height and number as well as of the individual seed productivity and a decrease of average seed number per pod was observed.
Plant growing at a greater area – 80/60 cm results in formation of more seeds per pod and in seed quality increase (seeds have higher absolute weight and germination).

IV Balkan Symposium on Vegetables and Potatoes

K. Mihov, G. Antonova

broccoli, seed plant, pedicles, sets, seed yield, seed weight, seed germination

https://doi.org/10.17660/ActaHortic.2009.830.61