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Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

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CONCLUSIONSFrom experiments in 2012 in which wasevaluated the viability (V%), the germinationcapacity (G%) and the efficiency ingermination %R(G/V), we have drawn thefollowing conclusions:The flowering of the apricot this year started inthe first days of April.The investigated apricot cultivars and hybridshave yielded in 2012 accordingly to the specificand individual potential but with negativeinfluences due to the microsporogenesis thatwas damaged in part and poor flowering insmall proportion.Regarding the two biological indicators of thepollen, the viability V% and germination G%and their relationship expressed by efficiencyin germination %R(G/V), on both sucrosemedium (15% and 20%), were obtained thefollowing values:The highest germination yield %R(G/V), it hasNicusor apricot cultivar on 15%sucrosemedium that presented 77% R(G/V) interms of only 48% viability (V%) and 37%germination (G%).The best germination percentage regarding theaction in media composition were recorded onliquid medium with 15% confronted with 20%sucrose medium.The highest values of germination and alsoof experienced floral representative parts in 3variants (v1,v2,v3), has consistency two variant(v2/medium+pollen+pistil) under the stimulantinfluence of pestle on both environments.Therefore the variant V2 we consider moreconcluding, because of the interaction betweenpollen and pistil for binding fruits prognosesthan V1.In vitro conditions, the germination (G%) ofthe pollen expresses by the pollen fertilitypotential and this relationship germinationviability expresses as germinable and vigorousare viable pollens and the germination degree%R(G/V) express the correlation degreebetween these two biological characteristics ofthe pollen.REFERENCESAndrei M., Paraschivoiu R., 2003.Microtehnica Botanic. Editura Niculescu.Bucureti, p. 120-223.Andrei M., Rdulescu D., 1972. Caiet pentru tehnicapreparrii i conservrii materialului biologic–Tehnica obinerii preparatelor microscopice.(Fac.Biologie) Univ.Bucuresti, p. 1-83.Baciu E., 1971. Contributii la studiul microsporogenezeila unele specii din subfamilia prunoideae. Lucr.St.seria B XIV 1971. <strong>Horticulture</strong> IANB. Bucuresti, p.241-245.Blidariu A., Iordnescu O., Micu R., Drgunescu A.,2008. Researches concerningpollen’s germinationand viability of some sour cherries varieties in theplain area of Banat. Bulletin <strong>Horticulture</strong> UASVM.Bucuresti. vol. 65(1), p. 505-507.Butac M., Militaru M., 2006. Fertilitatea i germinareapolenului la genotipuri de mr, pr, prun, cire iviin utilizate ca genitori potentiali în ameliorare.Lucrarile Stiintifice ale ICDP PitetiMrcineni.vol.XXII, p. 20-27.Cociu V., Oprea, St., 1989. Metode de cercet. înameliorarea plantelor pomicole. Edit. Dacia Cluj-Napoca, p. 82-87.Hedhly A, Hormaza J.I., Herrero M., 2004. Efect oftemperature on pollen tube kinetics and dynamicsin sweet Cherry Prunus avium (Rosaceae). AmericanJurnal of Botany 91(4), p. 558-564.Iordache M., esan T., Andrei M., 2010.Researches onviability and germinative capacity of the pollen insome romanian appricot varieties. Symposium ISHS-ICDP-Piteti Mrcineni,<strong>Scientific</strong> <strong>Papers</strong> of theR.I.F.G. Piteti, vol XXVI, p. 46-50.Ivacu A., Toma St., 2001. Autofertilitatea nectarinuluisi influenta unor fungicide asupra germinariipolenului. Lucr. St. ICPP Pitesti Maracineni.vol.XX, p. 62-68.Pdureanu, S., 2007. Citologia germinarii polenului deAmpelopsis brevipedunculata (Maxim) Trautv. Lucr.St. Universitatea Al. Ioan Coza.Iai, vol.50, p. 237-242.Pdureanu, S., 2007. Anomalii aparute in procesul degerminare al polenului la unele Vitaceae, Lucr.St.Universitatea Al. Ioan Cuza Iai, vol.50, p. 231-236Tarnavschi, I., erbnescu J. G., Mitroiu, R.N.,Rdulescu, D., 1981-1984. Monografia polenuluiflorei din Romania, Ed. Academiei RSR, vol. 1-4Xie, B., Wang, X., Hong, Z., 2010. Precocious pollengermination in Arabidopsis plants with alteredcallose deposition during microsporogenesis,Springer, Planta 231, p. 809-823277

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