Secondly, genotype gives strong influence on their subsequent growth on the rooting
medium and even their adaptation to the greenhouse conditions. In the study of
Krzyżanowska et al. [1995], four breeding lines were used to study the effects of genotypes
on plantlet regeneration and rooting abilities. All lines were found to be intensively
proliferated, with line 91/89M the most intensive and 1/89F the weakest. 91/89M
obtained the highest rooting rate (85.7% – 100%) but 1/89F the lowest. Fortes et al.
[1997] and Gebler [2005] investigated the influence of genotypes on in vitro rooting of
asparagus. Fortes et al. [1997] found that clone ‘M14’ had better rooting ability than the
hybrid ‘Deco’ (M14 X G27). Gebler [2005] illustrated that only five out of eleven plantlets derived from different single embryos had rooting abilities. Pontaroli and Camadro
[2005] studied the callus growth and plant regeneration from two selected clones of
asparagus: ‘Argenteuil 265’ and ‘Argenteuil 357’. From this experiment, 100% rooting
rate from clone ‘Argenteuil 265’ was obtained.