Yield and Biometric Characteristics of 9 Clones Selected From the Population of "Spinoso Sardo" Artichokes

Pisanu, A. B.; Mallica, G.M.; Baghino, L.; Cadinu, Marco; Repetto, A.; Lanteri, Sergio; Portis, Ezio; Saba, E.

doi:10.17660/actahortic.2004.660.9

Cited by 1 publication

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“…A more commercially competitive number was obtained from the April, June and August emergence dates, which were as productive as the seed-grown plants observed by Foury & La Malfa (1976) and the Spinoso sardo clones reported by Pisanu et al (2004) and Mallica et al (2004). In globe artichoke, capitula from the second order onwards develop from the last unfolded leaves, thus suggesting a possible association between the second knot (when the rate of leaf unfolding accelerates) and the number of capitula formed per plant.…”

Section: Development and The Number Of Capitulamentioning

confidence: 58%

“…The upper layer of the soil at the site consists of approximately 0.5 m of clay-loam. The seed material comprised open pollinated progeny of four clones of the cultivar 'Spinoso sardo', which differed from one another with respect to their capitulum size (Pisanu et al, 2004). The initial set of 720 seeds was divided into six lots of 120 seeds, one of which was sown every 2 months between November 2009 and September 2010, resulting in six different sowing dates/treatments named after the corresponding month of emergence (Table 1).…”

Section: Treatments Experimental Design and Crop Managementmentioning

confidence: 99%

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The phenology of seed-propagated globe artichoke

2013

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The ability of globe artichoke to produce inflorescences (capitula) during the autumn when the market price is highest is lost when plants are propagated from seed, as are most F 1 hybrid cultivars. To gain an understanding of the phenology of seed-propagated globe artichoke, both vernalised and nonvernalised seedlings grown from open pollinated progeny of 'Spinoso sardo' plants were transplanted into the field at two monthly intervals covering a whole year. Final leaf number and the date of unfolding of each leaf were used to calculate the phyllochrons. The average final leaf number increased from 24 to 88 in response to increasing daylength above an approximately 11 h threshold during the first 30 days after emergence, and this variate explained about 90% of the variation in the thermal time taken to reach the bolting stage. The average phyllochron ranged from 56 to 96°Cd among the six emergence dates and was the major underlying physiological cause of the loss of early flowering shown by seed-propagated plants. Genotypic variation for phyllochron within an emergence date was strongly associated with variation for the length of the emergence to bolting stage period. The limited effect of vernalisation on development indicated that the late flowering tendency of seed-propagated plants cannot be attributed to an unfulfilled cold requirement.

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Section: Development and The Number Of Capitulamentioning

confidence: 58%

Section: Treatments Experimental Design and Crop Managementmentioning

confidence: 99%