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Response of Some Reproductive Characteristics of Two Tomato Cultivars Grown in Field to Enhanced UV-B Radiation

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Author:: No author available

Journal Title:: CHINESE JOURNAL OF APPLIED & ENVIRONMENTAL BIOLOGY

Issue:: 5

DOI:: 10.3321/j.issn:1006-687X.2006.05.003

Key Word:: 番茄;繁殖特性;增强UV-B辐射;响应;大田研究

Abstract：研究了增强UV-B辐射对大田生长的两种番茄(早熟型"同辉"和晚熟型"霞光")某些繁殖特性(最大开花数、花粉萌发和花粉管伸长、果实产量、果实品质以及子代种子的数量和质量)的影响.结果表明,与对照相比,"同辉"开花数在高辐射下增加,"霞光"开花数在低辐射下减少;"同辉"果实产量在两种辐射下都明显增加,而"霞光"果实产量只在低辐射下增加;辐射抑制了"同辉"的花粉萌发和花粉管伸长,而只是降低了"霞光"的花粉萌发率;强辐射造成两种番茄果实番茄红素下降.经过一季的增强UV-B辐射处理,"同辉"种子数量增加,低辐射下种子明显变小;"霞光"种子数量减少,且明显变小.就开花数、果实产量和种子质量而言,早熟的"同辉"品种更具抗性,而晚熟的"霞光"更敏感.图3表1参29

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