Abstract
The importance of floral phenological synchrony among genetically compatible pollinizers and the main cultivar in an orchard requires a permanent evaluation of commercially grown and new introduced cultivars in all different locations where hazelnut is suitable for growing. Floral phenology of introduced hazelnut cultivars and two Chilean ecotypes used as pollinizers, were evaluated during five years (2007-2011), at Santa Rosa Experimental Farm, Quilamapu Regional Research Center, Instituto de Investigaciones Agropecuarias (INIA), latitude 36â31°34âS, longitude 71°54â40âW, Chillan, Chile. The earliest cultivars shed pollen by early or middle June; âSan Giovanniâ, âBarcelonaâ, âTGDLâ, âTonda di Giffoniâ, âGemâ, âSegorbeâ, âEnnisâ, âPauetetâ, âMortarellaâ, âRibetâ, âGhiraraâ and âIanussa Racinanteâ, while âWillametteâ, âMontebelloâ, âButlerâ, shed by middle of June and most of them during middle of July and early August; âClarkâ, âGammaâ, âLewisâ, âZetaâ, âSantiamâ, OSU 504-130 and âDeltaâ, while âEpsilonâ starts shedding pollen by the end of July and early August. Stigma receptivity in the other side, in the earliest ones took place by middle of May; âNegretâ, middle or late June; âMortarellaâ, âAmarilloâ, âBarcelonaâ, âSan Giovanniâ and âIannusa Racinanteâ and middle or end of July; âGhiraraâ, âButlerâ, âVerdeâ, âPauetetâ, âLewisâ, OSU 504-130, âRibetâ and âZetaâ, while âCasinaâ, âHallâs Giantâ and âButlerâ by end of July or early August. Finally, âWillametteâ, âGemâ, âSegorbeâ, âEpsilonâ, âEnnisâ, âClarkâ, âGammaâ, âDeltaâ and âPauetetâ show receptive stigmas by middle or end of August.
Published Version
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