155 research outputs found
A településfejlesztési koncepció és a faluosztályok elmélete. Emberképünk tizenöt évvel ezelőtt
Androgenesis induction in microspore culture of sweet pepper (Capsicum annuum L.)
Isolated microspore culture experiments were
carried out in sweet pepper (Capsicum annuum L.) F1
hybrid genotypes. In the first experiment, four culture media
(W14, B5, MS and NLN) were compared to test their
effectiveness in inducing the formation of microsporederived
structures in two genotypes. The experiments
revealed the superiority of B5 medium. In the second
experiment, the effects of different ratios of 2,4-dichlorophenoxyacetic
acid (2,4-D) (0, 0.1, 0.2 and 0.5 mg l-1) and
kinetin (0, 0.2 and 0.5 mg l-1) were also investigated in B5
medium with two genotypes. The effect of growth regulators
were investigated on the production of microsporederived
calli and embryo-like structures (ELSs), the ratio of
the two and plant regeneration (number of regenerated
plantlets) in microspore culture. The histological experiments
revealed the differences between the microsporederived
ELSs and calli. The most promising results were
obtained on the investigated parameters in the presence of
0.1 mg l-1 2,4-D and 0.2 mg l-1 kinetin producing the
highest number of plantlets in both genotypes tested. In the
response of 11 genotypes, the androgenesis induction was
successful in each sweet pepper genotypes tested using the
best basic medium and growth regulators combination.
In case of 11 genotypes, the number of ELSs ranged from
20 to 100/Petri dish (an average of 48.1 ELS/Petri dish),
while the number of green plantlets varied from 0 to 8
plantlets/Petri dish (an average of 1.5 plantlets/Petri dish)
depending on the genotype. The spontaneous rediploidization
rate obtained was 25% in isolated microspore
Társasági hĂrek
1. Egy utolsó mozaik. Emlékezés Olajos Teréziára (1941-2018)
2. Beszámoló a Magyar Bizantinológiai Társaság 2018. évi tevékenységérő
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