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首页> 外文期刊>Acta Horticulturae >Vegetative growth, cropping and winter hardiness of selected raspberry cultivars as affected by ProCa.
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Vegetative growth, cropping and winter hardiness of selected raspberry cultivars as affected by ProCa.

机译：受ProCa影响的部分覆盆子品种的营养生长，作物生长和冬季耐寒性。

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摘要

To increase harvest index of red raspberry (Rubus idaeus), there is a need to establish an appropriate balance between vegetative and generative growth. Therefore, the effect of single and repeated prohexadione-calcium (ProCa) treatments on vegetative growth and crop potential of the raspberry cultivars Glen Ample and Tulameen was studied. Furthermore, the effect of 2 or 3 ProCa treatments on winter hardiness of raspberry cultivars Ottawa and Muskoka was studied. Repeated ProCa applications were necessary to control growth of raspberry canes, as growth resumed already at 3-4 weeks after the first application. The response was cultivar-dependent. Growth reduction was mainly due to shortening of the internodes. In Glen Ample, repeated ProCa applications reduced number of flower buds and slightly delayed flowering. However, the total number of flowers per cane was not affected. In spite of reduced vegetative growth, advanced terminal bud set and slightly increased carbohydrate concentrations in buds, ProCa treatments did not improve winter hardiness of raspberry. In conclusion, ProCa was promising for growth control of biennial raspberry cultivars as it reduced vegetative growth without affecting crop potential. However, further research is needed to optimize the timing of ProCa applications.
机译：为了增加红树莓（Rubus idaeus ）的收获指数，需要在营养生长和有性生长之间建立适当的平衡。因此，研究了单一和重复的原己二酮钙（ProCa）处理对覆盆子品种Glen Ample和Tulameen的营养生长和作物潜力的影响。此外，研究了2种或3种ProCa处理对覆盆子渥太华和Muskoka品种的冬季耐寒性的影响。重复ProCa施用对控制覆盆子藤的生长是必要的，因为第一次施用后3-4周已经恢复了生长。该反应是依赖品种的。生长减少主要是由于节间缩短。在Glen Ample，重复ProCA施用减少了花蕾的数量，并略有延迟开花。但是，每个手杖的花总数没有受到影响。尽管植物生长减少，末梢芽结节提前并且芽中的碳水化合物浓度略有增加，但ProCa处理不能改善覆盆子的冬季坚韧性。总之，ProCa有望用于控制两年生覆盆子品种的生长，因为它减少了营养生长，却不影响作物的潜力。但是，需要进一步研究来优化ProCa应用的时序。

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