CHARACTERIZATION AND EVALUATION OF SOME LOCAL ALBANIAN MELON (Cucumis melo L.) CULTIVARS

Sakupljanje, proučavanje, vrednovanje, svrstavanje i čuvanje biljnih genetskih izvora s nakanom trajnog očuvanja od propadanja ili njihove upotrebe za proizvodnju prioritet je mnogih institucija u svijetu. Ovim se bavi i Istraživački institut za povrće i krumpir u Tirani i Albanska gen banka. Albanija je bogata biljnim genetskim izvorima gdje se posebno među povrćem ističe dinja. Upoznavanje i proučavanje pojedinih genetskih osobina autohtonih sorti dinje veoma je važno za poboljšanje osobina postojećih i stvaranje novih sorti za uvjete suvremene proizvodnje. Za uspješnu sakupljenu genetsku raznolikost treba dobro prepoznati osobine koje nosi biljna germplazma. Ovo je moguće smo nakon preciznog vrednovanja, što omogućava pronalaženje razlika među primkama i upotrebljivo je za genetsko poboljšanje osobina biljaka. Ovoj svrsi služi i proučavanje prezentirano u ovom radu.This study has been carried out in Vegetables and Potato Research Institute of Tirana. 19 autochthon accessions of melon, which are collected for some years in different regions of our country (Tirana, Gjirokastra, Korça, Fier, Shkodra, etc.) have been studied. This study, on morphological characters of plants and fruits, resistance to disease and pests spread in Albania, biometric and organoleptic characters of fruit and flesh and agro economic features as well, have been studied according to International descriptors requests (IPBGR, Roma, 1983). Results obtained, have contributed in determination of morphological, biometric, agro economic characters of melon germoplasm, for evaluating them, with the goal for a further breeding work. Most of these genotypes have good morphological and agro economic parameters. In the end, 12 accessions have a netted skin, 10 orange flesh, 8 a medium flesh consistence. Also, most of these autochthon cultivars are distinguished for some special features as, high productivity, thick flesh, good resistance to disease and pest, etc. Thus, we can mention such old local cultivars as “Qarres of Tirana”, “Bajza of Shkodra”, “Myselimi” and “Dhoksati” which are with much interest for the nearest future in breeding work

Influence of environment in electro-chemical quality of tomato

The aim of the research was to investigate the impact of different cultivation environments of tomato cultivars, the electro-chemicaland the qualitative traits of the tomato fruits. The quality of tomato fruit harvesting was evaluated at the Laboratory of Institute of Horticultureand Viticulture University of Natural Resources and Applied Life Sciences, Vienna. Two hybrids of tomatoes were tested Belle-F1 and AmaF1,in two locations and two different treatments (open field and plastic tunnels). Model of experimental fields was based on random method andincluded three replications. Following parameters were analyzed and tested: pH, Rh, P-Value, Nitrates and the content of vitamin C. The valuesof pH for treatment in the open field and indoor production system were not significant (4.47 to 5.05). For P-Value derived from the twotreatments the maximal values were without significant differences, while minimal values were significant. Study has shown also that the highestvalues of nitrate content (16.34 mg, open field) compared to average value differences were + 0.384 mg or 43.83% higher. In indoor productionthe nitrate content was lower in compared with plants cultivated in open fields, so these differences were +3.81 mg or 26.4 0%, and highlysignificant for both levels. In relation to vitamin C content, the highest value was identified in the indoor systemof 298.6mg, with variations fromthe overall average of 16.43% or + 42.15 mg. The coefficient of variation values for both levels was of 29.96 respectively 27.31%

Influence of environment in electro-chemical quality of tomato

The aim of the research was to investigate the impact of different cultivation environments of tomato cultivars, the electro-chemical and the qualitative traits of the tomato fruits. The quality of tomato fruit harvesting was evaluated at the Laboratory of Institute of Horticulture and Viticulture University of Natural Resources and Applied Life Sciences, Vienna. Two hybrids of tomatoes were tested Belle-F1 and AmaF1, in two locations and two different treatments (open field and plastic tunnels). Model of experimental fields was based on random method and included three replications. Following parameters were analyzed and tested: pH, Rh, P-Value, Nitrates and the content of vitamin C. The values of pH for treatment in the open field and indoor production system were not significant (4.47 to 5.05). For P-Value derived from the two treatments the maximal values were without significant differences, while minimal values were significant. Study has shown also that the highest values of nitrate content (16.34 mg, open field) compared to average value differences were + 0.384 mg or 43.83% higher. In indoor production the nitrate content was lower in compared with plants cultivated in open fields, so these differences were +3.81 mg or 26.4 0%, and highly significant for both levels. In relation to vitamin C content, the highest value was identified in the indoor systemof 298.6mg, with variations from the overall average of 16.43% or + 42.15 mg. The coefficient of variation values for both levels was of 29.96 respectively 27.31%