Transgenic parthenocarpic eggplants: superior germplasm for increased winter production
Transgenic parthenocarpic eggplants: superior germplasm for increased winter production
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DOI：
10.1023/a:1009613529099
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发表时间：
2000-02-01
影响因子：
3.1
通讯作者：
Rotino, GL
中科院分区：
文献类型：
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作者：
Donzella, G;Spena, A;Rotino, GL
冬季生产的三个茄子杂交转基因的单性结实基因DefH 9-iaaM进行了比较，在不加热的温室中，两个未转化的对照杂交种和商业单性结实品种Talina的性能。每个杂交种用植物激素的商业制剂处理或未处理以诱导坐果和生长。转基因单性结实杂种的生产力不受激素处理的影响。相反，未转化的杂种的生产力显着提高激素处理的花蕾。转基因杂交种的产量显着高于在相应的未转化的杂交种，即使后者用植物激素处理。当与两个相应的杂交组合的产量相比时，由于单性结实性状导致的产量增加特别明显，这两个杂交组合除了DefH 9-iaaM基因的存在之外是相同的。转基因杂种允许增加生产力的ca。百分之二十五这一增长与种植成本降低10%相吻合，主要是由于激素喷雾所需的劳动力，以及生产更好质量的水果。因此，DefH 9-iaaM基因是上级农艺学和传统遗传单性结实突变体的生物技术工具。
Winter production of three eggplant hybrids transgenic for the parthenocarpic gene DefH9-iaaM was compared, in an unheated greenhouse, to the performance of two untransformed control hybrids and the commercial parthenocarpic cultivar Talina. Each hybrid was either treated or untreated with a commercial formulation of phytohormones to induce fruit set and growth. The productivity of the transgenic parthenocarpic hybrids was not influenced by the hormonal treatment. On the contrary, the productivity of untransformed hybrids was significantly improved by hormonal treatment of the flower buds. The yield of the transgenic hybrids was significantly higher than that obtained in the corresponding untransformed hybrids, even when the latter were treated with phytohormones. The yield increment due to the parthenocarpic trait was particularly evident when compared to the yield of the two corresponding hybrid combinations, which are identical except for the presence of the DefH9-iaaM gene. The transgenic hybrids allowed an increase in productivity of ca. 25%. This increment coincided with a 10% reduction in cultivation cost, mainly due to the labour needed for the hormonal sprays, and to the production of fruits of better quality. Thus, the DefH9-iaaM gene is a biotechnological tool superior to both agronomic and traditional genetic parthenocarpic mutants.