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| Comparative Study on Major Agronomic Characteristics of Different Ploidy Miniwatermelons |
| WANG Zhen1,2;DANG Xuan-min1*;ZHAN Yuan-feng1 |
| 1Ministry of Agriculture Key Laboratory for Tropical Crops Germplasm Utilization,Tropical Crops Genetic Resources Institute of Chinese Academy of Tropical Agricultural Sciences,Danzhou 571737,Hainan,China;2Hainan University,Danzhou 571737,Hainan,China |
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Abstract The leaf areas,chlorophyll contents,soluble solid contents and lycopene contents of 17 accessions of pure diploid mini-watermelons(Citrullus lanatus)cultivars and homologous tetraploid watermelons were determined.The results showed that four major agronomic characteristics were increased along with the increase of ploidy.Among which,the leaf areas of tetraploid watermelons were increased by 22.43 %-165.80 %.The chlorophyll a+b contents in the leaf blades of majority homologous tetraploid watermelons were increased 1.57 %-17.28 %,compared with the diploid.And the soluble solid contents in the center of watermelons were increased by 1.80 %-5.69 %.The lycopene contents were increased by 8.66 %-88.41 %,showing significant or extreme significant differences to the diploid.
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Received: 17 April 2009
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