Effect of CPPU on Fruit Development of Selected Seedless and Seeded Grape Cultivars
Effect of CPPU on Fruit Development of Selected Seedless and Seeded Grape Cultivars
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DOI：
10.21273/hortsci.41.1.154
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发表时间：
2006-02
期刊：
影响因子：
1.9
通讯作者：
T. Zabadal;M. J. Bukovac
中科院分区：
文献类型：
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作者：
T. Zabadal;M. J. Bukovac
在田间条件下，研究了氯吡脲（CPPU）对葡萄属拉布拉多葡萄（Vitis labrusca）和拉布拉多×欧亚种葡萄（V. labrusca × V. vinifera）果实发育的影响。在平均浆果直径约为5 mm的“希姆罗德”果簇上，分别用0、5、10和15 mg·L-1的CPPU进行喷雾处理，初步建立了CPPU的浓度效应。在发育过程中监测浆果扩大（处理后16、30、44和59天）。在收获时测定簇质量、每簇浆果数、浆果质量和硬度以及°Brix。在收获时，所有浓度的CPPU都显著增加了浆果质量（2.3 g/浆果对约3.6 g/浆果）。CPPU浓度与果实硬度呈线性相关（r2 = 0.997）。对每簇浆果的数量没有显著影响（79至86）。°白利糖度、收获时的果轴坏死和冷藏（1 °C）30天后的浆果脱落显著减少。CPPU施用时间（0、5和10 mg·L-1）的影响是通过处理平均浆果直径约为4、5、7和9 mm的串来确定的。5和10 mg·L-1的最大果粒大小在4 ~ 7 mm的果粒直径下获得。以无籽的'Vanessa'和'拉克蒙'和有籽的'Concord'和'Niagara'为材料，用0、5、10或15 mg·L-1的CPPU处理果粒直径4 ~ 6 mm的果粒，比较了无籽和有籽品种的相对反应。生物反应是由浆果扩大和浆果和集群质量的时间过程，每簇浆果的数量，并在成熟时集群紧凑性评级。除“拉克蒙”在5 mg·L-1浓度下外，CPPU在施用后14 ~ 56 d均显著增加了无核浆果的直径。浆果和集群质量和集群紧凑性显着增加'Vanessa'。相比之下，CPPU对两个种子品种的唯一影响是在'Concord'中增加浆果大小，并且在'Niagara'中在施用后14天最初增加浆果大小。
The effects of CPPU [forchlorfenuron, N-(2-chloro-4-pyridinyl)-N-phenylurea] on berry development of Vitis labrusca and V. labrusca × V. vinifera cultivars was evaluated under field conditions. A concentration response was initially established by spraying clusters of 'Himrod' at a mean berry diameter of about 5 mm with 0, 5, 10, or 15 mg.L -1 CPPU. Berry enlargement was monitored (16, 30, 44, and 59 days after treatment) during development. Cluster mass, number of berries per cluster, berry mass and firmness, and °Brix were determined at harvest. Berry mass was dramatically increased (2.3 versus about 3.6 g/berry) at harvest by all concentrations of CPPU. Cluster mass and compactness were also increased and berry firmness was linearly related to CPPU concentration (r 2 = 0.997). There was no significant effect on number of berries per cluster (79 to 86). °Brix, rachis necrosis at harvest, and berry abscission after 30 days of refrigerated storage (1 °C) were significantly reduced. Effect of time of CPPU application (0,5, and 10 mg.L -1 ) was established by treatment of clusters at mean berry diameters of about 4, 5, 7, and 9 mm. Response was indexed by following berry enlargement at 14, 28, 42, and 56 (maturity) days after treatment. Maximum berry size for both 5 and 10 mg.L -1 was obtained from applications at 4 to 7 mm berry diameter. Relative response of seedless and seeded cultivars was compared by application of CPPU at 0, 5, 10, or 15 mg.L -1 to clusters (4 to 6 mm berry diameter) of seedless 'Vanessa' and 'Lakemont' and seeded 'Concord' and 'Niagara'. Bioresponse was determined by a time course of berry enlargement and berry and cluster mass, number of berries per cluster, and rating cluster compactness at maturity. Except for 'Lakemont' at the 5 mg.L -1 concentration, CPPU at all concentrations increased seedless berry diameter significantly from the first measurement at 14 through 56 days after application. Berry and cluster mass and cluster compactness were significantly increased in 'Vanessa'. In contrast, the only effect of CPPU on the two seeded cultivars was an increase in berry size in 'Concord' and an initial increase in berry size 14 days after application in 'Niagara'.