Rootstock Effects on Growth and Quality of 'Gala' Apples
| Autor: | T. R. Roper, Yahya K. Al-Hinai |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | HortScience. 39:1231-1233 |
| ISSN: | 2327-9834 0018-5345 |
| DOI: | 10.21273/hortsci.39.6.1231 |
| Popis: | The effect of rootstock on apple size is not clear due to inconsistent results of published studies. This study was conducted over 3 years at the Peninsular Agricultural Research Station near Sturgeon Bay, WI on 6-year-old 'Gala' apple trees (Malus domestica Borkh) grafted on Malling 26 (M.26), Ottawa 3, M.9 Pajam 1, and Vineland (V)-605 root- stocks. Fruit diameter was measured weekly. Fruit weight and volume were estimated by a quadratic regression of weekly measurements. Fruit weight was positively correlated with fruit volume. Rootstock had no effect on fruit growth and fi nal size even with the removal of crop load effects. Crop load was a highly signifi cant covariate for fruit size, but canopy light interception and seed count were not. Trees on M.26 EMLA had slightly higher yield in 2000 but rootstock did not affect yield effi ciency any year. Rootstock had no infl uence on fruit quality attributes during 2001; however, in 2002, fruit obtained from trees on Pajam- 1 tended to be less fi rm. Generally, apple fruit size was infl uenced by crop load and other factors, but not by rootstock. Commercial apple growers have an eco- nomic incentive to grow large fruit while main- taining yield. Since rootstocks are an important component of apple production systems, posi- tive effects of rootstock on fruit size would be benefi cial. Apple rootstocks infl uence potential |
| Databáze: | OpenAIRE |
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