engleski

Flowering phenology of five apple cultivars in the territory of Ravni kotari

The flowering phenology of five apple cultivars ('Cripps Pink', 'Golden Delicious', 'Granny Smith', 'Gala' and 'Elstar') in the territory of Ravni kotari (located in the County of Zadar, Croatia) was studied. The study consisted of the following characteristics: the start and end of flowering, date of full bloom, flowering intensity, the average number of flowers in a flower cluster, the diameter of the central flower petals color in balloon phase and arrangement of petals in flower. The highest average number of flowers in the flower cluster had cv. 'Golden Delicious', and cv. 'Elstar ' the lowest. The largest diameter of the central flower had the cv. 'Granny Smith' and the lowest cv. 'Elstar'. Cultivar 'Cripps Pink' had the earliest flowering (April 13) which lasted for about ten days, while cultivar 'Elstar'flowered the latest(April 20) and flowering lasted until April 29. The highest flowering intensityhad cv. 'Cripps Pink’ and the lowest cv. 'Elstar'. Petal color in balloon stage was different in all studied cultivars and petals were free, except in the cv. 'Elstar' where the petals overlapped. It can be concluded from this study that the cv. 'Cripps Pink' is unfavorable for breeding in the area of Ravni kotari, due to early flowering which makes it prone to damage from frosts and cold wind that blows from Velebit mountain.

Malus x domestica Borkh.; cultivar; blossoming; phenology

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