Genetic improvement of processing tomatoes: A 20 years perspective
Genetic improvement of processing tomatoes: A 20 years perspective
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DOI：
10.1023/a:1003760015485
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发表时间：
1999-01-01
期刊：
影响因子：
1.9
通讯作者：
Tanksley, SD
中科院分区：
文献类型：
--
作者：
Grandillo, S;Zamir, D;Tanksley, SD
在过去的20年里，加州番茄研究所和以色列农业部对加工番茄品种进行了重复的田间试验，目的是鉴定上级品种。由于普通对照品种是连续几年包括在内的，因此可以排除环境影响，从而可以估计育种带来的遗传改良。结果表明，加州和以色列的平均产量遗传增益分别为1.54%/年和0.4%/年。加州的糖度没有显著的遗传增益，而以色列的数据表明平均每年增加0.53%。对于衍生的锤度产量性状，总体遗传增益范围从以色列的0.9%/年到加州的1.5%/年。一个显着的遗传增益为1.15%/年，在加州的1977-87期间和2.73%/年，以色列在1985-1995年期间确定的果实颜色。产量的提高部分是由于从20世纪80年代中期开始的试验中杂交种比例的增加。对今后番茄育种的结果的影响进行了讨论。
Over the past 20 years replicated field trials have been conducted on processing tomato varieties by the California Tomato Research Institute and the Israeli Ministry of Agriculture with the objective of identifying superior varieties. Because common check varieties were included in consecutive years, environmental effects could be factored out allowing an estimate of the genetic improvement due to breeding. The results indicate an average genetic gain for yield of 1.54%/yr for California and of 0.4%/yr for Israel. No significant genetic gain in brix was found for California, whereas for Israel, the data indicate an average increase of 0.53%/yr. For the derived trait brix x yield, the overall genetic gain ranged from 0.9%/yr in Israel to 1.5%/yr in California. A significant genetic gain of 1.15%/yr was determined for fruit color in California for the period 1977-87 and of 2.73%/yr for Israel during the years 1985-1995. The improvement in yield is partially due to the increase in the proportion of hybrids in the trials starting from the mid 1980's. The implications of the results for future tomato breeding are discussed.